This circuit can generate signals in the VHF range and can be used as the basis for small transmitters. The frequency depends on the coil, which can have 2 to 8 turns for the range of 50 to 200 MHz.
This circuit is from 80s documentation and makes use of common operational amplifiers. The...
This circuit is used to run light bulbs around street signs. Incandescent lamps up to 40 W are...
Using two unijunction transistors, this circuit found in Electronics World generates linear...