Hi Frnds,
pls help me, i had a motor drive circuit with FET k1516, which fet are shorted. fet is driven by opto coupler A4504. I need to check wheter is ok or not. if i place faulty means, again fet wil be shorted,
i would appreciate if u guide me..
Thank u
Thank u for reply.. Bt I need to check optocoupler only.. Becoz fet has been short and burnt..
I taken out opto coupler from pcb. So I need out circuit test.
Thank u..
If you just want to test whether the output toggles correctly, you can just use the same circuit but replace the function generator with a switch that connects the LED to either a positive supply voltage or ground through an appropriate current limiting resistor. Though this won't be able to really tell you about the switching speed or delay of the device.
Yes i tried as u said. i connect 5v i/p through 1k reistor. and connect another 1K resistor from vcc to o/p. wen i/p is given, the o/p drops to gnd.
wen i/p is off, o/p is equal to vcc. so device is in workin state. i need this only.
thank u for ur help.