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ir2153 thyristor protection
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Hi, friends, i want know how work axillary vcc of shematic that i attached hear?

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L
LUCIANO
funciona como fonte regulada de 12volts para alimentar o sg3525 fazer fonte funcionar e depois funcionando a fonte ele se auto alimenta pelo enrolamento do trafo
Silvio
Silvio
The 100k resistor initially charges up the 2 capacitors 100uf until the SG chip starts to oscillate, the auxiliary winding will then generate the voltage needed to power the auxiliary supply. The voltage at the auxiliary supply is held constant and regulated by the zener diode and the transistors. The load on the 100K resistor is then taken off as the necessary voltage will be supplied from the auxiliary winding.
Silvio
Mistique You can find the pdf on the link below the pdf file is on post #13

Audio smps 700w (IR2153)

Audio smps 550 watts 700watts peak Here is an audio half bridge smps that can be altered in quite a lot of ways. This smps was designed in such a way that different drivers can be adopted, also that different protection circuits can be adopted. The one presented here is with a current limiter...
www.diysmps.com
regards Silvio
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