Patent ID: 6211658
Filing Date: 2001-04-03
Classification: G05F,H03F

Abstract:
An improved circuit module having a module body and an amplifier circuit with an operating point and a signal point disposed in the module body, the improvement comprising:a balanced voltage reference circuit disposed in the module body and including:a direct current source;a first non-reactive resistor having a first end and a second end;a transistor operated as an emitter follower having a collector connected to said direct-current source and to said second end of said first non-reactive resistor, and a base connected to said first end of said first non-reactive resistor;a second non-reactive resistor having a relatively low resistance in comparison with said first non-reactive resistor and formed of a first series resistor element having a first end and a second end and a second series resistor element having a first end and a second end, said first end of said first series resistor element connected to said second end of said first non-reactive resistor, said second end of said first series resistor element connected to said first end of said second series resistor element and defining a junction point, said second end of said second series resistor element connected to the signal point of the amplifier circuit and outputting a reference voltage for determining the operating point; anda capacitance having a first end connected to said junction point and a second end to be connected to ground, said capacitance and said second non-reactive resistor defining an RC filter and said capacitance connected as a parallel element of said RC filter.