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4_W_SERVO_MOTOR_DRIVE

2016-09-01 11:14  
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4_W_SERVO_MOTOR_DRIVE
Emitter-follower (common collector) push-pull amplifier gives stable output stage gain along with low-impedance drive for 1 to 4-w servo motors. Forward bias of 1.4 v is developed across D1 and D2, while D3 and D4 protect transistors from inductive load generated voltages that exceed emitter. base breakdown. Efficiency is better thon 60%.- Transistor Manual, Seventh Edition, General Electric Co., 1964, p 223.