This dimmer for incandescent lamps using triac and an LF7237 IC was found in May 1985 Radio Electronics magazine. The circuit supports extension buttons.
This is the traditional configuration of a differentiator with an operational amplifier. This was...
This amplifier circuit with a low power MOSFET was found in Popular Electronics from the 90s. The...
We found this circuit in Motorola's Circuit Applications for the Triac 1971 manual. The circuit is for ½...