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D_C_AMPLIFIER_SERVES_AS_VOLTAGE_REGULATOR

2015-03-24 02:52  
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D_C_AMPLIFIER_SERVES_AS_VOLTAGE_REGULATOR
Output voltage of series pass transistor Q1 is compared to input voltage serving as reference voltage by differential amp liner Q2 and variations are fed back to reduce difference. Feedback ratio of 0.67 gives overall gain of 1.3 and 10-ohm output impedance.-W. S. Zukowsky, Aligning Saturn Missile's Guidance System, Electronics, 37:8, p 26-27.