This 5 W transistor amplifier for the car was found in an English documentation from 1969. The transistors are from that time and the transformer is of a special type.
This well-crafted speed game setup for two competitors was found in a 1998 Poptronics. The circuit...
This is another one of the many versions of this circuit that we have in this section. We found it in...
This circuit controls 6 LEDs in two sets with the phase change cycles controlled by a 555...