This triac synchronized circuit was found in the July 1995 issue of Electronics Now magazine. The triac must be equipped with a heat sink depending on its power rating.
This is an old test circuit for integrated TTL counters, feeding a Nixie tube, common at the time....
This traditional crystal radio circuit, but which has a modern version with diode, was found in an...
This headphone amplifier using a pickup coil can be used as an extension for devices such as TVs,...