Power supply circuit » 4047 http://apowersupply.com Sat, 04 Feb 2012 16:06:35 +0000 en hourly 1 http://wordpress.org/?v=3.1 Converter 12V dc – 220V ac http://apowersupply.com/converter-12v-dc-220v-ac-59.html http://apowersupply.com/converter-12v-dc-220v-ac-59.html#comments Thu, 15 Dec 2011 21:16:32 +0000 aPowerSupply.com http://apowersupply.com/?p=59 This converter has a central component, the CMOS 4047, and converts a 12V DC voltage to 220V AC voltage. 4047 is utilised as a astable multivibrator. At pin 10 and 11 we find a rectangular symmetrically signal which is amplified by tow Darlington transistors T1 and T2 and finally reaches the secondary coil of a transformer network (2 x 10V/60VA). Primary coil terminals voltage is 220 alternative voltage. To obtain a better performance use a toroidal core transformer with reduced losses. With P1 the output frequency can be regulated between certain limits (50…400Hz).

12/220V Converter circuit schematic

converter 12vdc 220vac

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