tape player amplifier (CB7301E)

Found in a 1968 Electronics World, this circuit uses operational amplifiers from that time.

| Clique na imagem para ampliar |

Calibrator for cassette tape recorder (CB8772E)
Found in a Radio Electronics from the 90s, this circuit generates a 1 kHz signal to serve as a...
30 MHz Amplifier (CB5939E)
This low noise circuit was obtained from a 1980s US RF publication. Transistors used are uncommon...
Transducer amplifier (CB9064E)
This circuit applies to other operational ones, other than the one indicated. The formulas next to the...