Document Type and Number:
Japanese Patent JPS4830348
Kind Code:
A
Abstract:
A voltage controlled resistor of the junction gate field effect type is temperature compensated by a circuit including the emitter-base junction of a bipolar transistor and also a temperature responsive resistor having a temperature sensitivity which is substantially the same as that of the channel of the voltage controlled resistor. The temperature responsive resistor and the bipolar transistor are subjected to substantially the same temperature conditions as the voltage variable resistor and the voltage responsive resistor and emitter-base junction of the bipolar transistor are connected in series with a current source. The voltage drops across such emitter-base junction and voltage responsive resistor vary with such temperature and are employed as parts of a reverse-bias potential applied between the gate and channel of the voltage controlled resistor.
Application Number:
JP8242172A
Publication Date:
April 21, 1973
Filing Date:
August 17, 1972
Export Citation:
International Classes:
H03F1/30; H03F3/345; H03G3/10; H03H5/12; H03H11/54; (IPC1-7): H03K3/26
Domestic Patent References:
| JP35013786A |