Sine and Cosine Audio Generator (CB21337E)

Found in an old American publication, this circuit is intended for audio experiments. The components used are still common today.

| Clique na imagem para ampliar |

Differential Multiplexer (CB5352E)
This circuit was found in an ancient American documentation. The integrated circuit is of the time...
VHF Receiver (CB21204E)
Found in an older Radio Craft, this circuit covers the aerial band from 118 to 136 MHz. No...
40 dB Gain Amplifier LM382 (CB4763E)
This amplifier was found in a Radio Electronics of the 90s. The circuit uses unusual operational...