Title :
A technique to stabilize the output voltage level of an emitter follower
Author_Institution :
Dept. of Electr. Eng., California State Univ., Long Beach, CA
Abstract :
The emitter follower configuration, which is usually driven by another amplifier stage, is discussed. Together, the preceding and emitter follower stages are modified to provide constant-output DC levels. A design method to stabilize these voltage levels is presented. Several practical circuits are illustrated. Typical results show the output DC voltage to have a temperature coefficient of only 0.6-0.7 mV/°C. This constant bias maximizes transistor performance, increases signal headroom, and improves circuit stability
Keywords :
emitter followers; network synthesis; stability; circuit stability; common collector amplifiers; constant bias; constant-output DC levels; emitter follower configuration; output voltage level; signal headroom; temperature coefficient 0.6 to 0.7 mV/° C; transistor performance; Circuit stability; Equations; Impedance; Kelvin; Resistors; Temperature control; Temperature dependence; Temperature sensors; Voltage control;
Conference_Titel :
System Theory, 1989. Proceedings., Twenty-First Southeastern Symposium on
Conference_Location :
Tallahassee, FL
Print_ISBN :
0-8186-1933-3
DOI :
10.1109/SSST.1989.72523
