The circuit is from a June 1995 Electronics Now. The relay is power-dependent and both R1 and R2 should have close resistances in operation.
This circuit is suggested by Texas Instruments' Linear Circuits Applications. It consists of an...
What is the voltage of a zener diode recently removed from the scrap box and without any markings? If...
This 5-band function generator circuit was found in the April 1994 Electronics Now magazine. The...