Transistor Test (CB23604E)

Found in Radio Electronics from May 1959, this transistor tester is quite sophisticated. The circuit uses a 1 mA analog indicator.

| Clique na imagem para ampliar |

12 V x 200 mA power supply (CB8497E)
This small regulated power supply was found in a 1963 General Electric documentation. The special...
Hiss or Background Noise Suppressor (CB14851E)
This circuit suppresses the hiss or thermal noise that occurs in the amplifiers in the absence of a...
Tone Compensator (CB10349E)
I found this article by my friend A. Fanzeres in a Uruguayan magazine Corriente Alterna in July...