Audio Controlled Switch (CB21262E)

This sonic relay or vox was found in a Popular Electronics from the 90's. The power MOSFET can be of any type determining the controlled load.

| Clique na imagem para ampliar |

Notch Filter (CB23978E)
This filter was found in the October 1969 issue of Radio Electronics magazine. The frequency...
LM4862 Amplifier (CB26111E)
This low-power, low-supply voltage amplifier uses a preamplifier to achieve a high-gain...
Bistable Touch Switch (CB15425E)
In a bistable circuit, as shown in the figure, we use two sensors. When one of them is touched, the...