Double Christmas Flasher (CB25106E)

This circuit was published in the December 1987 Radio Electronics magazine. It uses two 555s to drive 6 flashing LEDs.

| Clique na imagem para ampliar |

Light controlled switch (CB22139E)
This circuit was obtained from an old English book. Transistors are types of the time....
Undervoltage protection (CB8028E)
Found in 1967 Raytheon documentation, this circuit uses a company coupler consisting of a lamp and...
4 to 20 mA loop for microcontrollers (CB21618E)
The basis of this circuit is the TL032 from Texas Instruments. The circuit converts an input in...