This circuit was obtained from an 80's Electronic Engineering. The circuit detects ice formation by triggering a warning light. The operational amplifier is of the time.
In the figure we have the way to use a stepper motor as an encoder. Operational amplifiers can be of...
Found in 90’s English documentation, this rising and falling siren, manually activated, drives a...
The sensor of this circuit is an NTC with a resistance between 200 and 1000 ohms. The resistor R1 must...