This circuit was obtained from an 80s factory manual. The integrated circuits used are uncommon today, but the diagram is for reference only.
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...