. The Bell System technical journal . WINDING MAGNETIC AMPLIFIER I. MINUS Fig. 18 â Push-pull transistor control circuit for a magnetic amplifier regulatedrectifier with constant voltage regulation. 850 THE BELL SYSTEM TECHNICAL JOURNAL, JULY 1954 A voltage proportional to the regulated output is connected to the baseof transistor {Tl). Fixed resistors are sho\Mi in the base circuit of {Tl)in Fig. 18, but a variable potentiometer could be used. The referencevoltage diode s applies a constant reference voltage to the base oftransistor {T2). If the output \oltage tends to increase, more collecto
. The Bell System technical journal . WINDING MAGNETIC AMPLIFIER I. MINUS Fig. 18 â Push-pull transistor control circuit for a magnetic amplifier regulatedrectifier with constant voltage regulation. 850 THE BELL SYSTEM TECHNICAL JOURNAL, JULY 1954 A voltage proportional to the regulated output is connected to the baseof transistor {Tl). Fixed resistors are sho\Mi in the base circuit of {Tl)in Fig. 18, but a variable potentiometer could be used. The referencevoltage diode s applies a constant reference voltage to the base oftransistor {T2). If the output \oltage tends to increase, more collectorand emitter current flows in transistor {Tl) due to the increase in itsbase-to-emitter voltage. This increase in emitter current of transistor(Tl) flows through resistor (Rl) and tends to raise the emitter voltage oftransistor {T2). Since the base potential of transistor {T2) is fixed, theeffect is to decrease the base-to-emitter voltage of {T2) and its collectorand emitter currents decrease. The result is an increase in Id and analmost equal decrease in Ic2 â
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