This circuit is based on the light comparison of two LDR sensors. We found it in a 90s Popular Electronics. The transistor must be according to the indicator or load being driven.
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...