This circuit was found in a 73 magazine for radio amateurs of the 90s. The circuit uses two types of indicators, the diodes are for general use. The power supply is 5 V.
This circuit controls 6 LEDs in two sets with the phase change cycles controlled by a 555...
I found this circuit in an old English magazine from 1979, but it can be easily assembled with...
The duration of the output pulse in this circuit depends on C. This capacitor can have values in...