2 to 10 LED flasher (CB7589E)

Found in American documentation from the 90s, this circuit is ideal for wearables and can be powered by voltages that depend on the number of LEDs.

| Clique na imagem para ampliar |

Voice Controlled Switch (CB12169E)
This circuit of a voice-controlled switch, Vox or sonic switch was obtained in a Popular...
Light-Operated Lamp (CB23961E)
This circuit appeared in the July 1969 issue of Radio Electronics magazine. The sensor is an LDR....
Simple Timer (CB18452E)
This circuit of two transistors was found in a Japanese magazine in 1967. The transistors are made...