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Simple hidden wire detector

July 21, 2011 Electronics / DIY electronics 256 225 38

Very simple hidden wire detector. Everyone will be able to collect. All details are in principle available. It is assembled on super sensitive transistors BC547. 6V power source I personally use dead crown batteries from the multimeter. The arrow in the diagram is the detector antenna.

So, about the assembly:

Because the circuit is very simple, I put it together in a canopy. In the photo, a diagram with a plug for the crown

It was decided to assemble a body for him, I took a box from under the ballast of wall fluorescent lamps:

Then I glued aluminum tape as an antenna:

I found some 1.5V batteries (I don’t know why) a little thinner than little pink batteries. Took 3 pieces, this 4.5V circuit also works from this:

I poked holes for the LED and the switch (the switch has already been inserted):

I stuffed everything inward and soldered the antenna to the tape:

Here is the device in the assembly:

But in the work_))

Works at a distance of about 10cm from wire 220

But looking for wiring in the wall))

This device is very sensitive, and I have no doubt that it will surprise you, because he reacts even to a weak email. field and touch of hands !!!

I wish you a successful assembly !!!

come back

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Comments (38)

#1 Veent Guests July 21, 2011 18:56
3

Here's a thing I bought for 30 rubles. It reacts to hidden wiring (Em Field). It also measures the alternating voltage from 12 to 220 V by touching one wire, not exactly but not bad either. At the same time there are no accumulators and rather not a larger size. Collect the most interesting but not practical
[center][/ center]
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#2 NOTFRONT Guests July 21, 2011 19:09
0

Buy and can fool if there is where ...
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#3 Veent Guests July 22, 2011 00:59
1

Well, if there is where to get imported transformers with high coff. amplification, you can definitely buy an indicator ... And on such transistors I collected a touch relay is more interesting
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#4 [) eNiS Guests July 22, 2011 13:19
1

Well, you can touch the relay)
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#5 STALKER Guests July 31, 2011 5:06 p.m.
0

listed all parts:
3 transistors bc547,
3 batteries 1.5v
and LED?
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#6 Vvlad Guests August 15, 2011 23:11
2

And what transistors can I still take?
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#7 pashkevich Guests August 24, 2011 18:55
0

The request to the author to give contact soap or ICQ or ...., is hidden in the profile.
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1. #8 Borga Visitors July 20, 2019 2:32 p.m.
  0
  
  I apologize .... originally read "in the snout" ....
  
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#9 klon681 Guests November 8, 2011 19:55
0

I did everything in a schematic, not turning up the diode; I turn on; I bring to the point; only transistors in vain
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#10 NOTFRONT Guests November 9, 2011 22:19
0

poorly assembled or out of non-working transistors. The working scheme!
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#11 ddddddd Guests February 15, 2012 23:24
1

also soldered everything according to the scheme and the diode is constantly on

Everything is working. I personally checked !!!

it should burn
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#12 Alexander Guests February 19, 2012 03:41
0

I collected everything according to the scheme, but in the end it’s silent! LED is off 6v power !!?

[b] Alexander [/ b], only without scotch tape!

[b] Alexander [/ b], is the antenna just a piece of wire?
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#13 General Guests April 6, 2012 22:42
1

I also assembled everything according to the scheme, the LED in complete darkness barely barely glows, while the antenna is wrapped around the 220 wire, but it works properly from touch of hands. food 6v. Why doesn’t it work as it should?
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#14 General Guests April 14, 2012 23:45
1

GUYS - EVERYTHING WORKS, JUST CHANGE THE COLLECTOR AND EMITTER !!!!!!!
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#15 dimka21_93 Guests May 11, 2012 01:17
0

why a blue light?
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#16 dimka21_93 Guests May 11, 2012 01:39
2

or what is it?
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#17 niks87 Guests August 16, 2012 21:37
0

Of course I'm a newbie, but tell me what for the green rectangles above the trinistors in the diagram
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#18 neyd Guests August 24, 2012 19:28
0

Hello, I’ve assembled the novice according to the scheme, nothing !!!!!!!!! what to do?
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#19 Veent Guests August 27, 2012 23:10
0

[b] neyd [/ b],
Try to change the VS547 transistors with new ones and replace the 1 MΩ resistors both and change to 220 Ohms too, and check the power source, it should work ...
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#20 neyd Guests September 1, 2012 00:02
0

new transistors, but why change the resistors they are working. food too
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#21 Veent Guests September 2, 2012 23:39
1

[b] neyd [/ b],
If the details are working and the circuit provided is also the only one conclusion that suggests itself: the circuit is not assembled correctly!
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#22 Lazer Guests October 2, 2012 17:03
5

ATTENTION!!!!! The inclusion of the LED in the diagram is indicated incorrectly! It needs to be deployed.

Specifically registered to indicate an error.
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#23 Name Guests March 27, 2013 18:33
0

Is it not easier to connect a fieldman, an earphone, a battery in series?
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#24 Wavan Guests December 11, 2013 16:39
0

I urgently needed this miracle of electronics, I immediately stumbled upon this circuit. Assembled, but previously turned the diode, it works. The wire is even at a distance of 20 centimeters. In principle, this is a bit much for accurate determination. I noticed such a byak. It seems to react not only to wiring, but also to the waves in the room. Passing in the middle of the room it happens to be triggered. In general, it didn’t work out so well, but you can use it.
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#25 the guest Guests January 7, 2014 8:45 p.m.
1

And if you put a wire (antenna) longer and the metal plate is thicker than aluminum, does this increase the radius of the detector?
P.s. I'm a teapot in electronics)
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#26 Sasha Guests January 15, 2014 23:49
0

Assembled everything according to the scheme! It worked the first time, the battery took 4.5 volts from an old mobile phone. But he turned out to be very sensitive. I’m thinking about pouring the whole thing with epoxy glue! What do you think will help? Special thanks to the author of the scheme.
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#27 poppy Guests February 22, 2014 04:10
0

I also bought a screwdriver but squealed everywhere on the RAW wall in the corridor. I wonder how the robot will be this device in non-residential premises?
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#28 Vlad Guests September 11, 2014 15:36
0

How many watts resistors please tell me.
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#29 earring Guests September 16, 2014 17:09
0

Quote: Guest
And if you put a wire (antenna) longer and the metal plate is thicker than aluminum, does this increase the radius of the detector?
P.s. I'm a teapot in electronics)

Why should you worsen the radius of action ?, it is necessary on the contrary to decrease!
if you increase the range, then the accuracy of the device will drop significantly.
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#30 Max Guests October 2, 2014 8:12 PM
0

The base of the first transistor does not open the transition, I assembled everything according to the scheme, the transistor changed. Tell me what's wrong?
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#31 alex Guests December 29, 2015 18:15
1

.... well, I already don’t know what and I’ve already tried everything ... the LED CONSTANTLY lights up at least somewhere and far from the wiring and it is necessary to know it close!
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#32 alex Guests December 29, 2015 18:41
0

[b] General [/ b],
how to change
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#33 alex Guests January 14, 2016 12:30
0

I thought that there was a tip from the power supply because I fed from it, put the battery in the same hat .... the diode holrita standing up ayannannnnnoooooooooo
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#34 Peter Guests March 16, 2016 19:31
0

No, the device is working. The diode is correctly set.Only a phonite from everything, it is impossible to use. Lights up from the carpet, slippers on rubber soles, working next to the refrigerator. It just doesn’t always mean reliable.
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#35 Alexey Guests September 14, 2016 21:11
0

The working scheme. Thanks to the author. Collected on the Soviet KT3102, earned immediately. Only the LED needs to be turned over; the diagram shows incorrectly.
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#36 Sergey Guests October 21, 2016 2:50 p.m.
0

soldered to KT3102, powered by 4 "fingers" (a total of 6.2 in). reacts to touch with a weak glow of the diode, but does not see the wiring point-blank. what's wrong?
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#37 Ivan98 Guests December 8, 2016 18:14
0

I would also like to put the LED, which will show the device is turned on or off, do not tell me whether it is necessary besides ext. LEDs to add something else to the circuit for proper operation?
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#38 a Guests April 12, 2017 04:38
1

[b] Peter [/ b],
No, it’s just not true. Did you collect it yourself or just theorize?
With this inclusion, the diode is locked and will not glow.
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