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 6v to 12v dc converter		  New Topic  Reply to Topic
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sameergupta
New Member

India
1 Posts
Posted - Aug 28 2009 :  06:18:21 AM  Show Profile  Send sameergupta an AOL message  Reply with Quote
plz explain me the working of 6v to 12v dc converter working
Samys

audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Aug 29 2009 :  09:41:37 AM  Show Profile  Reply with Quote
Q1 and Q2 are an oscillator that turns Q3 on and off.
When Q3 is turned on it energizes the coil. When Q3 is turned off then the inductance of the coil causes the collector voltage of Q3 to go positive above the power supply voltage and it charges C3.
When the output voltage is 12V then the zener diode conducts which turns on Q4 which turns off Q3 until the output voltage drops a little.
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