We found this parking light circuit for automotive use in a Texas Instruments optoelectronics documentation. The Darlington transistor can be replaced by others in the TIP line.
The CK722 transistor used in this circuit is one of the first commercial types in the world. The...
This automatic dimmer for incandescent lamps was found in a European publication from the 1980s. The...
This traditional doubler configuration with the 555 can be found in other articles on the author’s site....