This circuit is from a June 1992 Radio Electronics. The circuit is for 4.5 MHz signals from old analog televisions or other similar applications.
This circuit was found in a 1974 publication. It provides a tone indication of the temperature sensed by...
This is a simple rheostat circuit for motor control that works with voltages from 6 to 12 V. The...
This circuit with TTL compatible output was found in a 1968 US documentation. The circuit is...