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voltage coming in through the top left is 12 volts. since there is an pnp transistor linked to the inductor and the base of bd136 always gets a negative voltage with resp. to the emitter of bd136 it will always stay in on mode... and it did in reality ... it would have burned then and there but...
in this i am giving a 100% duty cycle pwm to the base of bc547 which further drives bd136 just to check the max current going through the transistore while in reality before this i had made the same setup with 10% duty pwm 100 hz frequency throug a microcontroller and built the circuit...
I was trying to make a circuit of DC Voltage booster
It showa a maximum current of 400 milli amp going through the collector of bd136 while in reality it should have gone to Killo Amperes considering that inductor series resistance in proteus is just 0.00002 ohms
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