Fantastic video as always! I first learned about optocouplers about two years ago service a flat panel TV, have since seen some home made roll your own....especially on some early vintage gear from the 70's / 80's. Welcome back, great to have a new video from you! ~Jack, VEG
@@OldSchoolElectronics No stress my man, your still golden! I know how busy someone can get. Hope things are good for you and yours, all good here. ~Jack, VEG
Also, I have not forgot about your request for a subject on a video, just been busy with other stuff...in fact I was running over the basic layout of the video request in my mind. ~Jack, VEG
And he is back! You seemed to be reading my mind sir, I seen this thing many time but wonder how to check it for fault. Now I have some idea from sir. Simple test requires Datasheet and 2 multimeters( for A and B side). I guess I could sub the B side multimeter (your Fluke 87 in video) with analog meter with no problem? Thank you for pushing the test with power supply(I dont have yet), function gen and scope both I have. I never bought a breadboard in my life but I guess its time to get one or two now. I would also like to see a video on reading the markings on a optocoupler. If its no trouble sir. Great basic tutorial sir. Keep uploading your electronic activities. Looking forward for more.
Thanks sir! Looks like I am back. To do a basic test you just need one meter. First check one side, then the other side. Also, you can use an analog meter instead of a digital meter. To a do a little more of a test you can use 2 meters. I started out with the easiest test. The markings are always in the datasheet. Breadboard is always good, doesn't cost much either. Power supply should be on your list; can be used to substitute voltages while troubleshooting, among other things. Thanks for watching.
Do you know of any electronic repairmen I could send a power supply in for possible repair? I was working on an arcade system and poking around while it was on. :/ I ended up grounding the LCD power supply right through the Mosfet heatsink. Blew the main fuse plus the soldered in fuse on the supply. I removed a mosfet (K3569) and it's not quite testing correctly. After being charged with the meter in diode, the gate slowly closes, never stays open. I have a few on order to test if a new one does the same thing. I pulled two optos, but they seem okay. I don't understand why the anode & cathode are on the DC side with all 4 of them. It seems this supply is hard to find, so my only option may be to repair it.
