This SCR relaxation oscillator was found in an 80's Electronic Design. It flashes a small incandescent lamp in frequency that depends on the capacitor.
The integrated circuit used in this 80's application is not common today. However, modern...
According to the consulted American publication of the 1980s, a zener diode can be used for DC...
This circuit, found in an American publication from the 1970s, produces an audible tone in a...