arr_baobao
Full Member level 2
im currently using a optocoupler HPCL 3120 to drive the switches in my two switches forward converter project. first i had tested the optocoupler output to gives the correct waveform into the switches.
After that i try to test the whole circuit with a smaller input voltage which is 50Vac. when i connect the input voltage to my circuit, i lost the waveform i got previously that is the waveform from the HPCL 3120 to the switches of my 2 switches forward converter. Then i try to remove the input voltage and check again with the waveform produces by the HPCL 3120, i can't get any waveform, just flat line.
so what happened to my circuit? i had try to changed the HPCL 3120 chip and the switches, but there's stil no responce from the output of the HPCL 3120. anyone here can helps me pls?
thanks
i will attach my circuit diagram and the hpcl 3120 connection here.
After that i try to test the whole circuit with a smaller input voltage which is 50Vac. when i connect the input voltage to my circuit, i lost the waveform i got previously that is the waveform from the HPCL 3120 to the switches of my 2 switches forward converter. Then i try to remove the input voltage and check again with the waveform produces by the HPCL 3120, i can't get any waveform, just flat line.
so what happened to my circuit? i had try to changed the HPCL 3120 chip and the switches, but there's stil no responce from the output of the HPCL 3120. anyone here can helps me pls?
thanks
i will attach my circuit diagram and the hpcl 3120 connection here.