electrical wires tester from a distance (voltage detector) : It is a small device that checks electrical wires is it conductive or it cut or damaged.
The wire tester consists of a small and simple electronic circuit, and it can be made easily, as shown in the following video:
Electronic components needed :
To make this electronic circuit we need these following components
- 3 Transistor NPN C945
- 1 Led
- 1 Resistance ( between: 220 Ohm – 560 Ohm )
- 1 Copper wire ( between: 10cm – 15cm )
- 1 small wire
- 5V source ( battery or charger )
