Non-contact AC Voltage Detector by Jan ko

Step 1. What do we need ?

ajncvaj — 2019-10-20 08:06:52 UTC

antenna (copper wire)
3 transistors
3 resistors
1 LED
9V battery
breadboard
kannatlikkus

Step 2. Battery

ajncvaj — 2019-10-20 08:46:50 UTC

Connect 9 Volt battery wires in last holes on white breadboard.

red ........... +
black ....... -

Step 3. Antenna

ajncvaj — 2019-10-20 08:53:04 UTC

Make antenna out of 30 cm long copper wire. Shape could be different.
Be shure to peal off the insulator on one side of copper wire. This side goes to breadboard.
Pin it in 2nd row (see picture).
Let antenna be out of breadboard.

Step 4. Transistor and resistor

ajncvaj — 2019-10-20 09:00:14 UTC

Pin transistors connects in rows number 1,2 and 3.

1 MOhm resistor should be in row number 1 and + column.

Step 5. Transistor an resistor again...

ajncvaj — 2019-10-20 19:09:06 UTC

Put the transistors connects in rows 11, 12 and 13.

100 kOhm resistor connects transistor in row 11 with + column.

Step 6. Transistor and....bla bla bla..

ajncvaj — 2019-10-20 19:19:33 UTC

Same job, but this time for transistor we use rows 20, 21 and 22.

220 Ohm resistor is connecting 20th row with 20th row on other half (look at the photo closely)

Step 7. LED

ajncvaj — 2019-10-20 19:24:22 UTC

LED (light emitting diode) connect with shorte leg in 20th row and longer leg in + column.
Also connect transistors with wires as shown at photo.

1st wire... rows 3 and 12
2nd wire...rows 13 and 21

Step 8. GND

ajncvaj — 2019-10-20 19:33:25 UTC

GND or ground or minus.....
Use shortest wire to connect 21st row with - column.

You are finished.

Step9. Rubber

ajncvaj — 2019-10-20 19:38:29 UTC

You can fix battery to a breadboard with a rubber.

Now use your sensor...

Finished !!!

1 M Ohm resistor

ajncvaj — 2019-11-02 11:17:01 UTC

elektritakistus - 1000000 Ohm

Colors:
brown, black, green, gold

100 k Ohm resistor

ajncvaj — 2019-11-02 11:21:53 UTC

elektritakistus - 100000 Ohm

Colors:
brown, black, yellow, gold

220 Ohm resistor

ajncvaj — 2019-11-02 11:23:59 UTC

elektritakistus - 220 Ohm

Colors:
red, red, brown, gold

Non-contact Voltage detector.

ajncvaj — 2019-11-06 17:58:01 UTC

Today we should make a non-contact AC Voltage detector :