4N25 Opto-isolator To cpemaa That transistor cct after the 4N25 works fine. Used BC108 with 82 ohms in base circuit and 100 ohms in collector....
4N25 Opto-isolator Thanks, that looks helpful, particularly the suggestion of using a transistor after the output, have previously used one as a...
4N25 Opto-isolator problem Am using a 4N25 opto-isolator between the computer serial port, pins 4 & 5, and the Push to Talk connection on a...
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