This circuit was found in a 1965 magazine. The circuit is powered by a single battery and uses germanium transistors. The earphone must be a high impedance Crystal type.
Test tip (CB23582E)
- Details
- Written by: Newton C. Braga
This circuit was found in a 1965 magazine. The circuit is powered by a single battery and uses germanium transistors. The earphone must be a high impedance Crystal type.
