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JONES_CHOPPER_FOR_BATTERY_POWERED_VEHICLE

2016-05-12 09:27  
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JONES_CHOPPER_FOR_BATTERY_POWERED_VEHICLE
Uses variable-frequency constant pulse-width system that starts reliably and provides smooth acceleration. At low speeds, on time of chopper, in series with d-c series motor,is much less than off time so average motor voltage is low. Potentiometer R2 controls ratio of on to off limes for speed control. Silicon Controlled Rectifier Manual, Third Edition, General Electric CO,1964, p173.