Tools for Beginners

LED Tools

                 Here are two simple tools for the Hobbyists to check their Prototype boards. These use LEDs as visual indicators for the quick check 

Continuity Tester

               This can be used to check the continuity of PCB tracks, wires, transformer windings, fuse, diodes, resistors etc. It uses a Red LED to give the positive indication of continuity.

 Polarity Indicator

                 This simple LED tool indicates the polarity of connection. It uses a bicolour LED to give two indications. If the polarity is correct, Green LED lights, and if polarity is reversed, Red LED lights.