Everyone gets tired of using those wires hanging out of your multimeter to detect any voltage is a wire or a circuit
But there is a way to it a Non-Contact Voltage Detector. Yeah that sounds neat and simple.
So, Let's make it with using only 4 Components. What !!! Only 4 Componrnts but How ??
If you want to know just make it ; )
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Step 1: Gather the Components
As I told only 4 Components are needed for this project. The list of all the materials needed is below
- Transistor [2N3904] (X2)
- Resistor [220 Ohms] (X1)
- LED (X1)
We will need some more things for this project -
- 9V Battery Connector
- Some Wires
Below are the tools that you will also need
- Soldering Iron
And a ......
- Glue Gun
Step 2: The Circuit
The whole Circuit that we will be making is in the image above with the Crystal Clear circuit diagram
Make sure you check it out. I am providing some tips for you to solder the Circuit -
- Keep the wires from your components short so that they don't take up much space and can be enclosed in a bottle cap
- You can take out one old Battery connector from a used up 9V Battery and directly solder it to the circuit to save space and some pennies too for your next project
- Use your Fired up Soldering Iron carefully
Step 3: Enclosure
We will need something to protect our circuit from corrosion and to make it look nice too. So let's make an enclosure for it now (enclosure is something kinda Shell like Structure)
- Take 2 Bottle Caps
- Make a hole for the LED and some more holes for the Battery Connector's wires and the Open wire (from the transistor)
- Take the LED and all the wires out of the holes
- Fill the Caps with hot glue to Secure our Circuit and to make it strong too
- Glue the 2 Caps together
- Glue Battery Connector on the top of one cap and make a loop of wire on the top of other cap
With this our Non Contact Voltage Detector is Ready to go for some testing and some Detection.
Step 4: Testing Time
Our Non contact Voltage Detector is ready to go. Just Connect a 9V Battery and take it near some wire from the Socket
You will observe that the more nearer you go the Brighter the LED gets
This thing is going to ease your way out while checking any voltage in any wire or circuit without ripping off any of its insulation and the using the multimeter
RIP multimeter (atleast for this purpose)
Thanks for Vising my instructable
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Happy Making and....... Happy Detection [in this case] XD
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