This circuit was found in Popular Electronics from March 1968. It is based on a double triode tube and is fed directly from the mains power supply by a transformerless source.
Signal injector (T455E)
- Details
- Written by: Newton C. Braga
This circuit was found in Popular Electronics from March 1968. It is based on a double triode tube and is fed directly from the mains power supply by a transformerless source.
