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.
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The circuit shown in figure is based on the ST Microelectronics TDEO0160 (www.st.com) and consists of...
The presented circuit provides voltages from 4.5 V to 12 V with currents up to 1 A. We obtained this...