Traffic Light Control Circuit

As logic circuits go, the 20 Step circuit is fairly simple but due to the high speed nature of the TTL Logic devices used, care must be taken when wiring these circuits. Simply put, The neater the wiring the better.

Dark Activated Switch or Porch Light Switch

Light dimmer circuits

schematic for 120V AC and 230V AC dimmer.

Light Operated Switch

Protecting Control Systems From Lightning