Found in a 1999 documentation, this circuit makes use of a power germanium transistor and a charcoal microphone. The battery must be high power or large cells.
Megaphone (CB22487E)
- Details
- Written by: Newton C. Braga
Found in a 1999 documentation, this circuit makes use of a power germanium transistor and a charcoal microphone. The battery must be high power or large cells.
