Found in American documentation from the 90s, this circuit triggers a buzzer with a Sonalert-type oscillator when the temperature of the sensor reaches a certain value set in R2.
This circuit reinforces the treble, working as a booster for instruments or home theater. The...
This circuit was found in an old Motorola documentation from the 70s, as it uses one of its...
We found this small amplifier in a 1973 technical publication. The critical components are the...