This circuit for incandescent lamps was found in the February 1972 Radio Electronics magazine. The triac is rated according to the lamp power and the sensitivity adjustment is made in R1.
This circuit generates an audio tone that is transmitted by infrared rays. The transistors can be...
Motorola suggests this circuit in an 80's documentation. The circuit uses an inverter to produce a...
Three of the four gates found in a 4001 can be used to perform as an AND gate. This improvisation...