Found in a documentation from the 90's, this circuit uses only one integrated circuit. The resistors in series with the LEDs depend on the power that can be between 5 and 12 V.
The voltage of 30 V indicated in this project, shown in the figure depends on the diac used. It...
This complementary or bilateral emitter follower was found in American documentation from the 90s....
The maximum current of this circuit is 1 A. The circuit is from Motorola Linear Interface ICs from...