This circuit makes use of comparators and common operational amplifiers, having been found in Motorola Linear Interface ICs of 1993. The circuit requires symmetrical source.
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...