This circuit for car engine spot adjustment was found in an 80's Radio Electronics. The circuit makes use of a xenon lamp and the pulse transformer must have a turn ratio of 1:50.
This configuration with the 741 Operational Amplifier has an NAB equalization for magnetic...
The frequency of this oscillator depends on the capacitors, being able cover the range between 1...
This clipper or limiter circuit limits the amplitude of AM or FM audio signals. The diodes are...