Interval for wiper (CB22113E)

This windshield wiper interval was found in an old documentation. The SCR can be the C106 and the transistor a BC548.

Audio Visual Thermometer (CB18469E)
This circuit was found in a 1974 publication. It provides a tone indication of the temperature sensed by...
DC Motor Speed Control (CB17401E)
This is a simple rheostat circuit for motor control that works with voltages from 6 to 12 V. The...
1 MHz Colpitts Clock (CB6469E)
This circuit with TTL compatible output was found in a 1968 US documentation. The circuit is...