US Patent Class 327
MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS




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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL
2  DF  .~ By phase
3  DF  .~.~ Comparison between plural inputs (e.g., phase angle indication, lead-lag discriminator, etc.)
4  DF  .~.~.~ With transducer
5  DF  .~.~.~ With input derived from feedback
6  DF  .~.~.~ With electron space discharge
7  DF  .~.~.~ With reference signal
8  DF  .~.~.~.~ With varying frequency
9  DF  .~.~.~.~ With sampling
10  DF  .~.~.~.~ Uniform pulse waveform
11  DF  .~.~.~.~ With transformer
12  DF  .~.~.~ With logic or bistable circuit
13  DF  .~ By shape
14  DF  .~.~ Slope
15  DF  .~.~.~ With direction (i.e., positive or negative)
16  DF  .~.~ Having feedback
17  DF  .~.~ With reference signal
18  DF  .~ By presence or absence pulse detection
19  DF  .~.~ Arbitration
20  DF  .~.~ Monitoring (e.g., failure detection, etc.)
21  DF  .~.~ With variable frequency source
22  DF  .~ By pulse noncoincidence
23  DF  .~ By pulse coincidence
24  DF  .~.~ Edge sensing
25  DF  .~.~ With uniform spacing
26  DF  .~.~ With pulse width detecting
27  DF  .~.~ With reference
28  DF  .~ By polarity
29  DF  .~.~ Selection of a particular polarity
30  DF  .~.~ Opposite polarity
31  DF  .~ By pulse width or spacing
32  DF  .~.~ With shock-excited circuit
33  DF  .~.~ With sampling
34  DF  .~.~ Narrow pulse elimination or suppression
35  DF  .~.~ Separating by duration or gap (e.g., duty cycle, etc.)
36  DF  .~.~ Selection of a particular pulse width
37  DF  .~.~ Comparison by threshold or reference
38  DF  .~.~ With plural paths
39  DF  .~ By frequency
40  DF  .~.~ Comparison between plural inputs
41  DF  .~.~.~ With synchronous detection
42  DF  .~.~.~ Fixed frequency reference signal
43  DF  .~.~.~ With logic or bistable circuit
44  DF  .~.~ With predetermined frequency selection
45  DF  .~.~.~ Including sampling or reference frequency
46  DF  .~.~.~ Including plural frequency detection
47  DF  .~.~ Frequency detection
48  DF  .~.~.~ With counting
49  DF  .~.~.~ With logic or bistable circuit
50  DF  .~ By amplitude
51  DF  .~.~ With sensing amplifier
52  DF  .~.~.~ Differential amplifier
53  DF  .~.~.~.~ Current mirror
54  DF  .~.~.~.~ Having feedback
55  DF  .~.~.~.~.~ Cross-coupled
56  DF  .~.~.~.~ With reference signal
57  DF  .~.~.~ With latching type element (e.g., flip-flop, etc.)
58  DF  .~.~ Maximum or minimum amplitude
59  DF  .~.~.~ Employing input compared to output
60  DF  .~.~.~ Employing input compared to reference derived therefrom
61  DF  .~.~.~ By diode-capacitor network
62  DF  .~.~.~ Maximum and minimum amplitude
63  DF  .~.~ Comparison between plural varying inputs
64  DF  .~.~.~ With logic or bistable circuit
65  DF  .~.~.~ Differential input
66  DF  .~.~.~.~ Current mirror
67  DF  .~.~.~.~ Having feedback
68  DF  .~.~.~ Input provides varying reference signal
69  DF  .~.~.~ With plural paths
70  DF  .~.~.~.~ With single output
71  DF  .~.~.~ Three or more inputs
72  DF  .~.~ Input signal compared to reference derived therefrom
73  DF  .~.~.~ Reference derived by feedback
74  DF  .~.~ Input signal compared to plural fixed references
75  DF  .~.~.~ Three or more
76  DF  .~.~.~ With logic or bistable circuit
77  DF  .~.~ Input signal compared to single fixed reference
78  DF  .~.~.~ Reference level crossover detecting
79  DF  .~.~.~.~ Zero crossover
80  DF  .~.~.~ Reference determined by threshold of single circuit element
81  DF  .~.~.~.~ With transistor
82  DF  .~.~.~ Plural sources of input signal
83  DF  .~.~.~ Temperature compensation
84  DF  .~.~.~ With bridge circuit
85  DF  .~.~.~ Inverting input or output
86  DF  .~.~.~ With transformer
87  DF  .~.~.~ Having feedback
88  DF  .~.~.~ With source as reference
89  DF  .~.~.~ With differential amplifier
90  DF  .~.~ Comparison between two characteristics of an input signal
91  DF  .~.~ Including details of sampling or holding
92  DF  .~.~.~ With bridge circuit
93  DF  .~.~.~ With reference source
94  DF  .~.~.~ Sample and hold
95  DF  .~.~.~.~ Having feedback
96  DF  .~.~.~.~ With differential amplifier
97  DF  .~.~ With logic or bistable circuit
98  DF  .~ By separating composite signal
99  DF  .~ Having selection between plural continuous waveforms
100  DF  SIGNAL CONVERTING, SHAPING, OR GENERATING
101  DF  .~ Converting input current or voltage to output frequency
102  DF  .~ Converting input frequency to output current or voltage
103  DF  .~ Converting input voltage to output current or vice versa
104  DF  .~ Converting, per se, of an AC input to corresponding DC at an unloaded output
105  DF  .~ Synthesizer
106  DF  .~.~ Having stored waveform data (e.g., in ROM, etc.)
107  DF  .~.~ Having digital device (e.g., logic gate, flip-flop, etc.)
108  DF  .~ Current driver
109  DF  .~.~ Having semiconductive load
110  DF  .~.~ Having inductive load (e.g., coil, etc.)
111  DF  .~.~ Having capacitive load
112  DF  .~.~.~ Push-pull
113  DF  .~ Frequency or repetition rate conversion or control
114  DF  .~.~ Of output rectangular waveform
115  DF  .~.~.~ Frequency division
116  DF  .~.~.~ Frequency multiplication
117  DF  .~.~ Frequency division
118  DF  .~.~.~ Having discrete active device (e.g., transistor, triode, etc.)
119  DF  .~.~ Frequency multiplication (e.g., harmonic generation, etc.)
120  DF  .~.~.~ With plural outputs
121  DF  .~.~.~.~ Selective
122  DF  .~.~.~ Doubling
123  DF  .~.~.~ With particular tube or distributed parameter element
124  DF  .~ By periodic switching (e.g., chopper, etc.)
125  DF  .~ Generating parabolic or hyperbolic output
126  DF  .~ Generating staircase output
127  DF  .~.~ With differential amplifier
128  DF  .~.~ With rectifying element
129  DF  .~ Generating sinusoidal output
130  DF  .~ Generating trapezoidal output
131  DF  .~ Generating sawtooth or triangular output
132  DF  .~.~ With current source or current mirror
133  DF  .~.~ With distortion control (e.g., linearization, etc.)
134  DF  .~.~ With slope or duration control
135  DF  .~.~ Having digital element
136  DF  .~.~ Having particular delay or sync
137  DF  .~.~ Having feedback
138  DF  .~.~ Having temperature compensation
139  DF  .~.~ Having inductive load
140  DF  .~.~ With amplitude control
141  DF  .~ Synchronizing
142  DF  .~.~ Reset (e.g., initializing, starting, stopping, etc.)
143  DF  .~.~.~ Responsive to power supply
144  DF  .~.~ Using multiple clocks
145  DF  .~.~.~ Having different frequencies
146  DF  .~.~.~ With feedback
147  DF  .~.~.~.~ Phase lock loop
148  DF  .~.~.~.~.~ With charge pump
149  DF  .~.~.~.~.~ With variable delay means
150  DF  .~.~.~.~.~ With digital element
151  DF  .~.~.~ With counter
152  DF  .~.~.~ With choice between multiple delayed clocks
153  DF  .~.~.~ With delay means
154  DF  .~.~ With feedforward
155  DF  .~.~ With feedback
156  DF  .~.~.~ Phase lock loop
157  DF  .~.~.~.~ With charge pump
158  DF  .~.~.~.~ With variable delay means
159  DF  .~.~.~.~ With digital element
160  DF  .~.~ With counter
161  DF  .~.~ With delay means
162  DF  .~.~ Having reference source
163  DF  .~.~.~ By phase
164  DF  .~ Generating rectangular (e.g., clock, etc.) or pulse waveform having random characteristic (e.g., random width, etc.)
165  DF  .~ Regenerating or restoring rectangular (e.g., clock, etc.) or pulse waveform
166  DF  .~.~ Having digital device (e.g., logic gate, flip-flop, etc.)
167  DF  .~.~ Having network providing particular mathematical function (e.g., integrator, etc.)
168  DF  .~.~ Having inductive device (e.g., transformer, etc.)
169  DF  .~.~ Having negative resistance device (e.g., tunnel diode, etc.)
170  DF  .~ Slope control of leading or trailing edge of rectangular (e.g., clock, etc.) or pulse waveform
171  DF  .~ Output pulses having opposite polarities
172  DF  .~ Rectangular (e.g., clock, etc.) or pulse waveform width control
173  DF  .~.~ Pulse narrowing
174  DF  .~.~ Pulse broadening
175  DF  .~.~ Duty cycle control
176  DF  .~.~ Having digital device (e.g., logic gate, flip-flop, etc.)
177  DF  .~.~ Having inductive device (e.g., transformer, etc.)
178  DF  .~ Rectangular (e.g., clock, etc.) or pulse waveform amplitude control
179  DF  .~.~ Gain
180  DF  .~.~ Limiting, clipping, or clamping
181  DF  .~ Electromagnetic pulse forming
182  DF  .~ Delay line or capacitor storage element charged or discharged through or by a relaxation oscillator type circuit to form pulse
183  DF  .~ Delay line or capacitor storage element charges or discharges through a tube to form pulse
184  DF  .~ Rectangular (e.g., clock, etc.) or pulse waveform generating by conversion from input AC (e.g., sine, etc.) wave
185  DF  .~ Particular stable state circuit (e.g., tristable, etc.)
186  DF  .~.~ Superconductive (e.g., cryogenic, etc.)
187  DF  .~.~ External effect device (e.g., light, heat, magnetic, or mechanical force sensitive devices, etc.)
188  DF  .~.~ Minority carrier storage effect
189  DF  .~.~.~ Storage diode (e.g., step recovery, etc.)
190  DF  .~.~ With transformer or saturable core device
191  DF  .~.~.~ Blocking oscillator
192  DF  .~.~ Negative resistance transistor (e.g., unijunction, etc.)
193  DF  .~.~.~ Four or more layer device, (e.g., trigistor, etc.)
194  DF  .~.~ Zener or capacitive diode
195  DF  .~.~ Negative resistance diode having "N"-shape characteristic on I-V plot (e.g., tunnel diode, backward diode, etc.)
196  DF  .~.~ Negative resistance diode having "S"-shape characteristic on I-V plot (e.g., four or more layer semiconductor device, etc.)
197  DF  .~.~ Convertible circuit (e.g., bistable to monostable, D-type to T-type, etc.)
198  DF  .~.~ Initializing, resetting, or protecting a steady state condition
199  DF  .~.~ Circuit having only two stable states (i.e., bistable)
200  DF  .~.~.~ Dynamic bistable
201  DF  .~.~.~.~ Complementary clock inputs
202  DF  .~.~.~ Master-slave bistable latch
203  DF  .~.~.~.~ Including field-effect transistor
204  DF  .~.~.~.~ Including multi-emitter or multi-collector bipolar transistor
205  DF  .~.~.~ Using hysteresis (e.g., Schmitt trigger, etc.)
206  DF  .~.~.~.~ Including field-effect transistor
207  DF  .~.~.~ Including diverse solid state devices (e.g., FET/bipolar, etc.)
208  DF  .~.~.~ Including field-effect transistor
209  DF  .~.~.~.~ Including enhancement and depletion devices
210  DF  .~.~.~.~ CMOS
211  DF  .~.~.~.~.~ With clock input
212  DF  .~.~.~.~ With clock input
213  DF  .~.~.~.~.~ Plural independent clock inputs (i.e., non complementary )
214  DF  .~.~.~ Complementary transistors
215  DF  .~.~.~ Having at least two cross-coupling paths
216  DF  .~.~.~.~ JK type input
217  DF  .~.~.~.~ RS or RST type input
218  DF  .~.~.~.~ D type input
219  DF  .~.~.~.~ Particular device at input, output, or in cross-coupling path
220  DF  .~.~.~.~.~ With diode
221  DF  .~.~.~.~.~ Parallel RC network in cross-coupling path
222  DF  .~.~.~.~.~ Resistor in cross-coupling path
223  DF  .~.~.~ Plural transistors of same conductivity type
224  DF  .~.~.~ With single semiconductor device
225  DF  .~.~.~ With logic element (e.g., NOR gate, etc.)
226  DF  .~.~.~ With single electron tube
227  DF  .~.~ Monostable
228  DF  .~.~.~ Having cross-coupled paths
229  DF  .~.~.~ Having differential circuitry
230  DF  .~.~.~ With external feedback (i.e., output to input)
231  DF  .~ Phase shift by less than period of input
232  DF  .~.~ Dependent on frequency
233  DF  .~.~ Correction to specific phase shift
234  DF  .~.~.~ Dependent on variable controlled phase shifts
235  DF  .~.~.~ Dependent on multiple fixed phase shifts
236  DF  .~.~.~ By phase comparator or detector
237  DF  .~.~ Variable or adjustable
238  DF  .~.~.~ Quadrature related (i.e., 90 degrees)
239  DF  .~.~.~ Non-overlapping multiple outputs
240  DF  .~.~.~ Maintaining invariant amplitude
241  DF  .~.~.~ With counter or shift register
242  DF  .~.~.~.~ Having multiple outputs
243  DF  .~.~.~ With feedback
244  DF  .~.~.~.~ With phase comparator or detector
245  DF  .~.~.~.~ Having multiple outputs
246  DF  .~.~.~ With differential amplifier
247  DF  .~.~.~.~ Having multiple outputs
248  DF  .~.~.~ With adder
249  DF  .~.~.~.~ Having multiple outputs
250  DF  .~.~.~ With active time delay element
251  DF  .~.~.~.~ Having multiple outputs
252  DF  .~.~.~ With passive time delay element
253  DF  .~.~.~.~ Having multiple outputs
254  DF  .~.~ Quadrature related (i.e., 90 degrees)
255  DF  .~.~.~ 90 degrees between input and output
256  DF  .~.~ Phase inversion (i.e., 180 degrees between input and output)
257  DF  .~.~.~ Multiple outputs
258  DF  .~.~ Multiple outputs
259  DF  .~.~.~ Non-overlapping
260  DF  .~.~ Producing AC power control
261  DF  .~ Having specific delay in producing output waveform
262  DF  .~.~ Including significant compensation (e.g., temperature compensated delay, etc.)
263  DF  .~.~ Delay interval set by rising or falling edge
264  DF  .~.~.~ Having specific active circuit element or structure (e.g., FET, complementary transistors, etc.)
265  DF  .~.~.~.~ With counter
266  DF  .~.~.~.~ Differential amplifier
267  DF  .~.~.~.~ Electron tube
268  DF  .~.~.~ Having specific passive circuit element or structure (e.g., RLC circuit, etc.)
269  DF  .~.~ Multiple outputs with plurality of delay intervals
270  DF  .~.~.~ Variable or adjustable
271  DF  .~.~.~ Including delay line or charge transfer device
272  DF  .~.~.~ Having specific active circuit element or structure(e.g., FET, complementary transistors, etc.)
273  DF  .~.~.~.~ With counter
274  DF  .~.~.~.~ Differential amplifier
275  DF  .~.~.~.~ Electron tube
276  DF  .~.~ Single output with variable or selectable delay
277  DF  .~.~.~ Including delay line or charge transfer device
278  DF  .~.~.~ Having specific active circuit element or structure (e.g., complementary transistors, etc.)
279  DF  .~.~.~.~ With counter
280  DF  .~.~.~.~ Differential amplifier
281  DF  .~.~.~.~ Field-effect transistor
282  DF  .~.~.~.~ Electron tube
283  DF  .~.~.~ Having specific passive circuit element or structure (e.g., RLC circuit, etc.)
284  DF  .~.~ Including delay line or charge transfer device
285  DF  .~.~ Having specific active circuit element or structure (e.g., complementary transistors, etc.)
286  DF  .~.~.~ With counter
287  DF  .~.~.~ Differential amplifier
288  DF  .~.~.~ Field-effect transistor
289  DF  .~.~.~ Electron tube
290  DF  .~.~ Having specific passive circuit element or structure (e.g., RLC circuit, etc.)
291  DF  .~ Clock or pulse waveform generating
292  DF  .~.~ Clock fault compensation or redundant clocks
293  DF  .~.~ With plural paths in network
294  DF  .~.~.~ With common output
295  DF  .~.~ Plural outputs
296  DF  .~.~.~ Plural clock outputs with multiple inputs
297  DF  .~.~.~ Clock bus
298  DF  .~.~ Single clock output with multiple inputs
299  DF  .~.~ Single clock output with single clock input or data input
300  DF  .~.~ With saturable inductance
301  DF  .~.~ With electron beam type tube
302  DF  .~.~ With storage diode
303  DF  .~.~ With rectifier
304  DF  .~.~ With inductive device (e.g., transformer, etc.)
305  DF  .~.~ With gas tube
306  DF  .~ Amplitude control
307  DF  .~.~ Baseline or DC offset correction
308  DF  .~.~ Variable attenuator
309  DF  .~.~ By limiting, clipping, or clamping
310  DF  .~.~.~ Transient or signal noise reduction
311  DF  .~.~.~.~ By filtering
312  DF  .~.~.~.~ By feedback limiting-clamping
313  DF  .~.~.~.~ Using 3 or more terminal type nonlinear devices only
314  DF  .~.~.~.~ Using diode type nonlinear devices only
315  DF  .~.~.~ Providing constant input/output amplitude level ratio
316  DF  .~.~.~.~ By feedback control
317  DF  .~.~.~ Distortion compensation
318  DF  .~.~.~ In input or output circuit
319  DF  .~.~.~.~ For interstage coupling
320  DF  .~.~.~.~.~ Using diode
321  DF  .~.~.~.~ Clamping of output to voltage level
322  DF  .~.~.~.~ Of output current
323  DF  .~.~.~ Feedback
324  DF  .~.~.~ By using diverse-type nonlinear devices
325  DF  .~.~.~ Using only diode active elements
326  DF  .~.~.~.~ Avalanche or negative resistance device (e.g., zener diode, tunnel diode, etc.)
327  DF  .~.~.~ Using only transistor active elements
328  DF  .~.~.~.~ Field-effect type device
329  DF  .~.~.~ With tuned circuit
330  DF  .~.~.~ With rectifier or nonlinear impedance
331  DF  .~.~ Maintaining constant level output
332  DF  .~.~.~ With feedback
333  DF  .~.~ Interstage coupling (e.g., level shift, etc.)
334  DF  SPECIFIC INPUT TO OUTPUT FUNCTION
335  DF  .~ By differentiating
336  DF  .~ By integrating
337  DF  .~.~ Having switched capacitance
338  DF  .~.~ With thermionic tube
339  DF  .~.~ With summing or counting
340  DF  .~.~ Single vacuum tube
341  DF  .~.~ With compensation
342  DF  .~.~ With transducer
343  DF  .~.~ With rectifier circuit
344  DF  .~.~ Including RC circuit
345  DF  .~.~ Having feedback
346  DF  .~ Exponential
347  DF  .~.~ Square root
348  DF  .~.~.~ RMS
349  DF  .~.~ Square function
350  DF  .~ Logarithmic
351  DF  .~.~ With cascade network
352  DF  .~.~ With summing
353  DF  .~.~ With vacuum tube
354  DF  .~ Absolute value
355  DF  .~ Combining of plural signals
356  DF  .~.~ Product
357  DF  .~.~.~ Quadrant
358  DF  .~.~.~ Having feedback
359  DF  .~.~.~ Differential amplifier
360  DF  .~.~ Quotient
361  DF  .~.~ Summing
362  DF  .~ With compensation
363  DF  .~ Having feedback
364  DF  .~ With vacuum tube
365  DF  GATING (I.E., SWITCHING INPUT TO OUTPUT)
366  DF  .~ Superconductive (e.g., cryogenic, etc.) device
367  DF  .~.~ Josephson junction
368  DF  .~.~ Critical current control
369  DF  .~.~ External control (e.g., piezoelectric, light, etc.)
370  DF  .~.~.~ Magnetic field control
371  DF  .~.~.~ Temperature control
372  DF  .~.~ Inductive effect
373  DF  .~.~ Layout
374  DF  .~ Accelerating switching
375  DF  .~.~ Saturation prevention
376  DF  .~.~ Turn-on
377  DF  .~.~ Turn-off
378  DF  .~ Compensation for variations in external physical values (e.g., temperature, etc.)
379  DF  .~ Signal transmission integrity or spurious noise override
380  DF  .~.~ Preventing quick rise gating current (i.e., di/dt)
381  DF  .~.~ Preventing quick rise gating voltage (i.e., dv/dt)
382  DF  .~.~ Parasitic prevention or compensation (e.g., parasitic capacitance, etc.)
383  DF  .~.~ Ensuring fully conducting state
384  DF  .~.~ Switch noise signal
385  DF  .~.~.~ Contact bounce from mechanical switch
386  DF  .~.~.~.~ With clock input
387  DF  .~.~ Control signal derived from or responsive to input signal
388  DF  .~.~.~ Additional external control signal
389  DF  .~.~ Insulated gate FET (e.g., MOSFET, etc.)
390  DF  .~.~.~ With capacitive bootstrapping
391  DF  .~.~.~ Complementary metal-oxide semiconductor (CMOS)
392  DF  .~ Delay controlled switch (e.g., fixed, single time of delay control, etc.)
393  DF  .~.~ With variable or multiple adjustable time of delay control (e.g., variable charge-discharge, on-delay/off-delay control, etc.)
394  DF  .~.~.~ With field-effect device
395  DF  .~.~.~ Propagation through plural delay devices or paths
396  DF  .~.~.~ With plural switching elements (e.g., sequential, etc.)
397  DF  .~.~.~ Including negative resistance device in delay circuit (e.g., unijunction transistor, etc.)
398  DF  .~.~ For predetermined time period
399  DF  .~.~ With field-effect device
400  DF  .~.~ Propagation through plural delay devices or paths
401  DF  .~.~ With plural switching elements (e.g., sequential, etc.)
402  DF  .~.~ Including negative resistance device in delay circuit (e.g., unijunction transistor, etc.)
403  DF  .~ Parallel controlled paths
404  DF  .~.~ Field-effect transistor
405  DF  .~.~ Bipolar transistor
406  DF  .~.~ Electron tube
407  DF  .~ Converging with plural inputs and single output
408  DF  .~.~ Field-effect transistor
409  DF  .~.~.~ Push-pull circuit
410  DF  .~.~.~.~ With complementary transistor devices
411  DF  .~.~ Bipolar transistor
412  DF  .~.~.~ Push-pull circuit
413  DF  .~.~.~.~ With complementary transistor devices
414  DF  .~.~ Electron tube
415  DF  .~ Diverging with single input and plural outputs
416  DF  .~.~ Field-effect transistor
417  DF  .~.~ Bipolar transistor
418  DF  .~.~ Electron tube
419  DF  .~ Utilizing three or more electrode solid-state device
420  DF  .~.~ Breakdown characteristic (e.g., punch-through, tunneling, etc.)
421  DF  .~.~.~ Zener
422  DF  .~.~.~ Avalanche
423  DF  .~.~ Bridge circuit
424  DF  .~.~.~ Field-effect transistor
425  DF  .~.~ Bilateral transistor
426  DF  .~.~.~ Plural
427  DF  .~.~ Field-effect transistor
428  DF  .~.~.~ With silicon controlled rectifier (SCR)
429  DF  .~.~.~ Four or more electrode solid-state device
430  DF  .~.~.~ JFET (i.e., junction field-effect transistor)
431  DF  .~.~.~.~ MESFET (i.e., metal semiconductor field-effect transistor)
432  DF  .~.~.~ With bipolar transistor
433  DF  .~.~.~.~ Bi-CMOS
434  DF  .~.~.~ Insulated gate FET (e.g., MOSFET, etc.)
435  DF  .~.~.~.~ GaAs
436  DF  .~.~.~.~ Plural devices in series
437  DF  .~.~.~.~ Complementary metal-oxide semiconductor (CMOS)
438  DF  .~.~ Four or more layer device (e.g., thyristor, etc.)
439  DF  .~.~.~ Bipolar transistor circuit configuring SCR device
440  DF  .~.~.~ GTO (i.e., gate turnoff)
441  DF  .~.~.~.~ Plural or combined with other four or more layer device
442  DF  .~.~.~.~ Separate ON and OFF control circuit
443  DF  .~.~.~.~ Transformer or inductor in control circuit
444  DF  .~.~.~ Complex wave supply
445  DF  .~.~.~.~ Silicon controlled rectifier (SCR)
446  DF  .~.~.~.~.~ Triac
447  DF  .~.~.~ AC supply
448  DF  .~.~.~.~ Device in bridge
449  DF  .~.~.~.~ PUT (i.e., programmable unijunction transistor)
450  DF  .~.~.~.~ Four electrodes
451  DF  .~.~.~.~ Zero point switching
452  DF  .~.~.~.~.~ With triac
453  DF  .~.~.~.~ Silicon controlled rectifier (SCR)
454  DF  .~.~.~.~.~ With unijunction transistor
455  DF  .~.~.~.~.~ Triac
456  DF  .~.~.~.~.~.~ Plural
457  DF  .~.~.~.~.~.~ Combined with diac
458  DF  .~.~.~.~.~.~ Combined with diverse four or more layer device
459  DF  .~.~.~.~.~.~ With bipolar transistor
460  DF  .~.~.~.~.~ Plural SCR's
461  DF  .~.~.~.~.~.~ Inverse parallel connection
462  DF  .~.~.~.~.~.~.~ With bipolar transistor
463  DF  .~.~.~.~.~ With bipolar transistor
464  DF  .~.~.~.~ Having plural four or more layer devices
465  DF  .~.~.~ DC supply
466  DF  .~.~.~.~ PUT (i.e., programmable unijunction transistor)
467  DF  .~.~.~.~ Four electrodes
468  DF  .~.~.~.~ SCR and unijunction transistor
469  DF  .~.~.~.~ Triac
470  DF  .~.~.~.~ Plural devices
471  DF  .~.~.~.~.~ Series anode-cathode connection
472  DF  .~.~.~.~.~.~ Plural paths
473  DF  .~.~.~.~.~ Parallel connection
474  DF  .~.~.~.~.~ With bipolar transistor
475  DF  .~.~.~.~ SCR and bipolar transistor
476  DF  .~.~.~ Triac
477  DF  .~.~ Unijunction transistor (UJT)
478  DF  .~.~ Bipolar transistor
479  DF  .~.~.~ Special four or more electrode device (e.g., multiple bases, three electrode bipolar with FET gate, etc.)
480  DF  .~.~.~.~ Multiple emitter transistor
481  DF  .~.~.~.~ Multiple collector transistor
482  DF  .~.~.~ Plural
483  DF  .~.~.~.~ Darlington connection
484  DF  .~.~.~.~ Opposite conductively (i.e., complementary)
485  DF  .~.~.~.~.~ Control circuit in cascade
486  DF  .~.~.~.~.~ Control circuit in totem pole
487  DF  .~.~.~.~ Control circuit in cascade
488  DF  .~.~.~.~ Control circuit in totem pole
489  DF  .~.~.~.~ Control circuit with common emitter
490  DF  .~.~.~.~.~ With current mirror
491  DF  .~.~.~.~.~ With emitter follower
492  DF  .~.~.~.~ Control circuit with common collector
493  DF  .~ Utilizing two electrode solid-state device
494  DF  .~.~ Bridge circuit
495  DF  .~.~.~ Combined with diverse device in at least one arm
496  DF  .~.~.~ Plural
497  DF  .~.~.~ Active element in diagonal arm
498  DF  .~.~ Negative resistance
499  DF  .~.~.~ "N"-shape curve on I-V plot (e.g., tunnel diode type, etc.)
500  DF  .~.~.~ "S"-shape curve on I-V plot (e.g., pnpn diode type, etc.)
501  DF  .~.~.~.~ Hyperconductive diode
502  DF  .~.~ Breakdown characteristic (e.g., zener diode, etc.)
503  DF  .~.~ PIN diode
504  DF  .~.~ PN junction diode
505  DF  .~.~.~ Inverse parallel connection
506  DF  .~ Three or more electrode electron tube
507  DF  .~ Two electrode electron tube
508  DF  .~.~ Bridge circuit
509  DF  EXTERNAL EFFECT
510  DF  .~ Magnetic
511  DF  .~.~ Utilizing Hall effect
512  DF  .~ Temperature
513  DF  .~.~ With compensation for temperature fluctuations
514  DF  .~ Light
515  DF  .~.~ Elements forming an array
516  DF  .~ Utilizing conversion of mechanical variations into electrical variations (e.g., vibration sensitive, etc.)
517  DF  .~ Responsive to proximity or touch
518  DF  WITH PARTICULAR CONTROL
519  DF  .~ Plurality of load devices
520  DF  .~ Plural active components included in a controlling circuit
521  DF  .~.~ Connected in inverse parallel
522  DF  .~.~ Gaseous tube
523  DF  .~ Gaseous tube
524  DF  SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM
525  DF  .~ Fusible link or intentional destruct circuit
526  DF  .~ Redundant
527  DF  .~ Superconductive (e.g., cryogenic, etc.) device
528  DF  .~.~ Josephson junction
529  DF  .~.~ Impact ionization
530  DF  .~ With specific source of supply or bias voltage
531  DF  .~.~ Fluctuating or AC source with rectifier or filter
532  DF  .~.~.~ With particular filter circuit
533  DF  .~.~.~ With battery connected across rectifier
534  DF  .~.~ Having particular substrate biasing
535  DF  .~.~.~ Having stabilized bias or power supply level
536  DF  .~.~.~.~ Charge pump details
537  DF  .~.~.~.~ With field-effect transistor
538  DF  .~.~ Stabilized (e.g., compensated, regulated, maintained, etc.)
539  DF  .~.~.~ Using bandgap
540  DF  .~.~.~ With voltage source regulating
541  DF  .~.~.~.~ With field-effect transistor
542  DF  .~.~.~ With diverse type transistor devices
543  DF  .~.~.~ Using field-effect transistor
544  DF  .~.~ Power conservation or pulse type
545  DF  .~.~ Including signal protection or bias preservation
546  DF  .~.~.~ With field-effect transistor
547  DF  .~.~ With selectively or alternately DC or AC input
548  DF  .~.~ With oscillator or interrupter
549  DF  .~.~ With hum or interaction prevention
550  DF  .~.~ With particular filament heating circuit
551  DF  .~ Unwanted signal suppression
552  DF  .~.~ Active filter
553  DF  .~.~.~ Adjustable
554  DF  .~.~.~.~ Switched capacitor filter
555  DF  .~.~.~.~ Selective type signal filtering (e.g., from low pass to high pass, etc.)
556  DF  .~.~.~ Notch or bandreject
557  DF  .~.~.~ Bandpass
558  DF  .~.~.~ Lowpass
559  DF  .~.~.~ Highpass
560  DF  .~ Nonlinear amplifying circuit
561  DF  .~.~ With operational amplifier
562  DF  .~.~.~ With field-effect transistor
563  DF  .~.~ With differential amplifier
564  DF  .~ Integrated structure
565  DF  .~.~ With specific layout or layout interconnections
566  DF  .~.~.~ Having field-effect transistor device
567  DF  .~ Thin film
568  DF  .~ Negative resistance type
569  DF  .~.~ Unijunction transistor
570  DF  .~.~ Having "N"-shape curve on I-V plot (e.g., tunnel diode type, etc.)
571  DF  .~.~ Having "S"-shape curve on I-V plot (e.g., pnpn diode type, etc.)
572  DF  .~.~ Secondary emissive type
573  DF  .~.~.~ Electron multiplier type
574  DF  .~ Utilizing a three or more electrode solid-state device
575  DF  .~.~ Darlington connection
576  DF  .~.~ Complementary transistors
577  DF  .~.~ Multiple emitter transistor
578  DF  .~.~ Multiple collector transistor
579  DF  .~.~ Minority carrier storage
580  DF  .~.~ Transistor breakdown device (e.g., avalanche, zener, punch through, etc.)
581  DF  .~.~ Field-effect transistor
582  DF  .~.~ Four or more layer device (e.g., silicon-controlled rectifier, etc.)
583  DF  .~ Utilizing two electrode solid-state device
584  DF  .~.~ Breakdown diode (e.g., zener diode, avalanche diode, etc.)
585  DF  .~.~ Minority carrier storage diode (e.g., enhancement diode, etc.)
586  DF  .~.~ Capacitive diode
587  DF  .~.~ Bridge circuit
588  DF  .~ With bridge circuit
589  DF  .~ With bootstrap circuit
590  DF  .~ With particular feedback
591  DF  .~ Tube performs plural functions
592  DF  .~ With oscillation prevention
593  DF  .~ With distributed parameter circuit
594  DF  .~ With particular coupling or decoupling
595  DF  .~ With particular connecting
596  DF  .~ Including oscillatory or shock-excited circuit
597  DF  .~ With particular grid control
598  DF  .~ With particular tube structure
599  DF  .~.~ Vacuum tube type
600  DF  .~.~.~ Beam tube structure
601  DF  .~.~ Gas tube
602  DF  .~.~.~ With particular electrode arrangement
603  DF  MISCELLANEOUS