Diode Circuit Function with Switch and LED Display

The purpose of this project is to allow you to check your ability to explain some circuit action which uses the following components and basic characteristics.

1. Polarity reversing switch.

2. Diode rectifier action: current can only flow against the arrow head on the Schematic symbol.

3. LED's glow requires proper voltage polarity.

Now use your pencil and outline how the circuit operates and then explain how the parts function to obtain the observed circuit operation.