This circuit was found in a Texas Instruments documentation from the 1980s. The circuit monitors engine temperature by warning of engine warm-up and warning when the fan is on.
This is a basic and operational voltage comparator circuit. The circuit has voltages determined by the...
This immobilizer circuit for vehicles was found in a 80’s Hands On Electronics. The circuit...
This sensitive 4-transistor signal follower can be used in both audio and RF circuits. P1 is a...