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BLOCKING_OSCILLATOR_SUPPLY

2015-03-18 16:12  
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BLOCKING_OSCILLATOR_SUPPLY
Uses modified blocking oscillator to obtain square wave switching at 4,200 cps. Charges 300-mfd capacitor to 500 v in 5 to 10 sec from 9-v dry cell that can deliver up to 700 Bashes. To start oscillator, S1 momentarily connects R1 to negative side of battery.-H. A. Manoogian, Transistor Photoflash Power Converters, Electronics, 31:35, p 29-31.