nirza
Newbie level 5
Hi!
How to increase the voltage from optocoupler 4n35? i had connected the input pin of the optocoupler to the output pin of the microcontroller. the other pin is connected to the groud. for the other side of the optocoupler, for emitter i connect it to ground. collector is to the vcc and to the mosfet gate.
however, the the voltage input to the mosfet seems to be a constant value of 12V. i thought when i already isolate it from the microcontroller, the pwm signal will follow. but it seems that no pwm signal into the mosfet.
can anyone give suggestion or modification for my circuit?? :---(
How to increase the voltage from optocoupler 4n35? i had connected the input pin of the optocoupler to the output pin of the microcontroller. the other pin is connected to the groud. for the other side of the optocoupler, for emitter i connect it to ground. collector is to the vcc and to the mosfet gate.
however, the the voltage input to the mosfet seems to be a constant value of 12V. i thought when i already isolate it from the microcontroller, the pwm signal will follow. but it seems that no pwm signal into the mosfet.
can anyone give suggestion or modification for my circuit?? :---(