.~ Current and/or voltage (e.g., ballast resistor) {3}
24
.~.~ Indirectly heated
DEFINITION
Classification: 338/24
(under subclass 20) Subject matter wherein a resistance heater for the resistor is provided other than the resistance element and in a current circuit distinct from the current circuit through the element.
(1) Note. The heater circuit may be in series or shunt with the resistance element or be in another electrical system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
23, for thermistor type resistors whose resistance value changes in response to a current which indirectly heats the resistance element.
SEE OR SEARCH CLASS
219, Electric Heating, 50+, for electrical resistance heaters.
