Crystal radio receiver

You can use difrent coil and variable capacitor.

Bigger coil more power.

Coil acts as antenna, but you can connect smal antenna to circuit.

For earth you can use AC socket ground pin.

Some germanium diodes: AA112, AA113, AA117, AA119, 1N82, 1N34, 1N60, OA85, OA95 ...

Click on picture for zoom in.

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