Found in Radio Electronics this circuit uses a fotodiac to drive a triac. The circuit can use equivalent triacs.
This circuit generates pulses from 0.5 Hz to 500 kHz, adjusted by potentiometer P2. The transistor can...
Suggested by a 1966 publication, this circuit applies a 60 Hz signal to a transistor to test its...
This preamplifier for the 6 or 2-meter range was obtained from an American documentation from the...