This servo circuit was found in 1969 Motorola documentation. Integrated circuits and transistors are types of the time, hard to find today.
The circuit shown can be used in an audio link using visible light or IR. Any photo transistor can be...
The purpose of this simple configuration, found in old documentation, is to trigger a buzzer if...
This circuit was obtained from the 2005 manual of Linear Technology LT1306. The formulas for...