I occasionally think of what possible things might have been sent over this microwave radio. When I was in Germany in the army we had microwave telecomm links on the tops of hills to connect our hawk missile sites to our headquarters. We had the voice channels connected to our switchboard and if you were
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This circuit uses four BJTs – 3 NPN and 1 PNP high current to drive the load. It has two touch pads, one for On and one for Off. I don’t see any information about the power supply voltage or load current. Some maximum voltage and current should be given for the circuit as shown.
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Chris Boden gets foul-mouthed about his friend’s house wiring mess.
This short uses a CD4026, a 7 segment display, 9V battery, some resistors, an IR LED and a CdS photocell or phototransistor. Break the IR beam and the display advances to the next digit. https://www.facebook.com/reel/525596709839365?mibextid=9drbnH
