We found this circuit in a 1991s PE Hobbyst Handbook. The circuit fires 10 LEDs that can control incandescent lamps according to their maximum current.
Found in an English Maplin documentation from 1983, this circuit generates separate frequency...
This is the circuit of an old commercial amplifier from Fapesa (Philips Argentina) from the 1970s....
The circuit is from the Linear Application Handbook. The resistors determine the voltage applied to...