im doing a final year project.
im using optocoupler 6n137 and gate driver fan7382
it works okay on its own however when i connect the output of the optocoupler to my input fan7382, it does not give any output at the high out and low out. any advices??

 

Verify the lead diagram of the 2N2222 transistor. There are two different pin-outs.

 

What voltages are you seeing at input pins 2 and 3 of the 7382?

 

Verify the lead diagram of the 2N2222 transistor. There are two different pin-outs.

what do u mean verify the

Verify the lead diagram of the 2N2222 transistor. There are two different pin-outs.

im using muticomp 2n2222 transistor. the input to my gate driver fan7382 is from the collector of the transistor

 

What voltages are you seeing at input pins 2 and 3 of the 7382?

the yellow waveform is the input at the optocoupler
the blue waveform is the waveform at the transistor collector. i connected the collector output to the pin 2 and pin 3 separately to get the separate waveform for the lowout and highout. below are the 2 waveforms.

the blue waveform output lowout at driver side

the blue waveform is the output highout from the driver side

 

What voltage do you get at pin 6 of the 6N137?
Is pin 5 of the 6N137 properly grounded?
Try increasing RL to at least 1kΩ.

 

What voltage do you get at pin 6 of the 6N137?
Is pin 5 of the 6N137 properly grounded?
Try increasing RL to at least 1kΩ.

i am able to obtained the output. its due to the grounding error.
thankyou for your inputs! much appreciated!

 

Good to know you've got it working.