In the figure we have the way to implement a monostable with an operational amplifier LM393. The configuration applies to other operators and the power supply must be symmetrical.
Found in a 90s Popular Electronics, this circuit triggers a load from the audio signal applied to...
This circuit generates alternating magnetic fields in a small electromagnet for various...
This dimmer, from an old publication, can use almost any triac and in shooting a neon lamp. The...