This circuit was found in an Electronic Design. It makes use of a relaxation oscillator to trigger an SCR and two relays. The circuit operates at frequencies of 12 to 180 cycles per minute.
This fixed regulator for currents up to 2 A uses a 741 operational amplifier. The transistor must...
Using a zener diode it is possible to change the linearity of the scale of an analog instrument by...
This high sensitivity circuit was found in the July 1992 Radio Electronics magazine. The circuit...