This circuit was obtained from Linear Technology documentation from the 80's. Powered by 5 V it can be used as a shield. The components are from the era.
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...