We know that LED is a two terminal semiconductor device. It is used in most of the electronic circuits as a sign or visual representation to the normal human to know that circuit is working properly.

Figure 1 This circuit works in most rechargeable batteries. It comprises a reference LED, LED REF, which operates at a constant current of 1 mA and provides reference light of constant intensity ...

Waytek has added six new LED indicator lights to its product line to complement its incandescent indicator lights. These new LED indicator lights come Waytek has added six new LED indicator lights to ...