We found this circuit in a 1986 documentation. It uses only LEDs, batteries, resistors and the power supply which can consist of 4 batteries or a 9V battery. The basic circuit uses two-color LEDs.
In the figure we have a way of using a Triac to control inductive loads. The capacitor must be...
This traditional dimmer configuration for incandescent lamps and heating elements was found in an...
Using common components, this circuit found in a 2003 publication, controls the level of a water...