In this circuit the triac conducts when switch S1 is opened. We found it in the October 1987 Radio Electronics magazine. The triac is controlled according to the load.
We found this circuit in a circuit manual from the 1980s. The circuit eliminates the conductive...
This circuit generates interval signals controlled by a light sensor. The basic time of the sound...
This high-gain digital amplifier uses general-purpose transistors. The supply voltage is logic...