Electronic-photoflash


Posted on Oct 2, 2012

Using the CA3164A BiMOS control chip consumes less than 15 pA during standby, yet it can provide 100 mA of chopped current to the de-to-de converter during the energy-reservoir charging cycle. The CA3164A drives tbe primary of T1 with symmetrically chopped current at a 400 to 2000 Hz rate. The CA3164Ns chopper frequency is about 500Hz;


Electronic-photoflash
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the duty cycle, 50% when R7 is 3.1 4 K!l.




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