The presented circuit makes use of a common operational amplifier that must be powered by a symmetrical source. R resistors from 10k to 1M determine the gain and compression of the signal.
This circuit is intended to monitor the flame of gas heating systems that must always have a small...
This circuit deactivates the ignition system after a certain time when you leave the vehicle. In...
This circuit was obtained in a technical publication from the 1970s. It fires a diac and thus a...