Treble Control (CB21293E)

This passive circuit was found in old American documentation. It can be added to any amplifier input since having losses of 20dB.

| Clique na imagem para ampliar |

Light-Operated Lamp (CB23961E)
This circuit appeared in the July 1969 issue of Radio Electronics magazine. The sensor is an LDR....
AM Receiver Via Power Grid (CB25196E)
For signals up to about 500 kHz modulated in amplitude and transmitted by the power network, the...
Digital Thermometer (CB24793E)
This circuit was found in the March 1984 issue of Radio Electronics magazine. The sensor is a...