This circuit uses components that are still common despite being from 1995 documentation. The circuit can be powered by 6 to 12 V voltages and the speed of the LEDs' sliding effect is set to P1.
When operating near a medium wave radio, the signal frequency changes and this can be heard on the...
This is one of the possible receivers for the CB4582E transmitter. The circuit is from 1995...
This circuit was obtained from a 1978 Practical Wireless. It makes a speaker emit sound when there...