This flasher circuit consists of an astable multivibrator with the frequencies given by the capacitors. The circuit is from 1965 using light bulbs, but LEDs can be used. Power comes from 4 batteries.
In the figure we give a suggestion of a high-power stage to excite a speaker with the 2N3055. The...
This guitar pedal was found in a 2004 documentation. The signal is transmitted to an FM receiver...
The circuit shown below is from the National Semiconductor's 1994 Linear Applications Handbook. The...