This ultrasonic digital remote-control transmitter was found in the January 1976 issue of Radio Electronics magazine. The components are from the period. The IC is from the period.
The circuit presented is from the Motorola Linear Databook of 1990. The integrated circuit is a...
This linear speed control for DC motors up to about 2 A was found in a 1978 publication. The power...
The idea is simple: using a flashlight to cut your TV commercials triggers a relay that turns off...