This circuit can be used to generate percussion sounds such as bell, triangle, etc. The circuit must be powered by symmetrical source and the triggering is by external pulse.
The purpose of this circuit is to keep the speed of a small 100 mA direct current motor constant. The...
The coil L2 has 64 turns of wire 28 or thinner wire in a 1 cm form coreless and L1 10 turns on L2....
This circuit was obtained in a 1980 edition of Elementary Electronics a magazine that no longer...