Iron - how to detect the location of a wire break.

   IRON


   Sometimes it is necessary to locate the location of a wire break.
To do this, you need the diagram below. Sob-
Anyone can steal it. B1 can be taken from an old phone, which
you can get it late on a deserted street :) T1, T2, T3
This is KT 312B. They can be purchased at any radio store. T4-KP 103Zh -
I hope you'll get it too.  With capacitors and resistors in general
There shouldn't be any problems. It is better to install the AL 307B LED,
to monitor the status of the device.  Power supply - 4.5 V. Antenna
A piece of ordinary wire can serve.


   Make sure that the wires connecting the parts do not go in pairs
parallel to each other, otherwise clicks will appear.


   With this device you can also, by bringing the antenna
Well, to the radio or telephone wire, no problem listening to what's going on
they are "talking" there.
   And now - the diagram:

      ┌─────o───────o──────o──────o───┐
      │ │ │ │ │ │
      │ R1▒ R2▒ R3▒ R4▒ █╢ BA1
      │ ▒ ▒ ▒ C2* ▒ █╫
      │ │ o──────┼──┤├──o │
    - o │ + C1 │ │ │/ │
 4.5 V o───┤├──┼────o─┼────┤ │
    + o │ │ │ │ T2│> │/
      │ T1 │ │ R5▒ │ └─┤
│/ │ ├─────┘ ▒ │ T3│>
 │ / SA1 >┼─────┼─────▒▒▒────<┼┘ ▒
      │ │ ├┐T4 │
      │ │ │ / АЛЗO7Б
      │ │ │ ─┬─
      └─────o──────────────o──────────┘

   R1,R4 - 1,2K C1 - 20X6 B T1-T3 - KT 312Б
   R2 - 20K T4 - КП 103Ж
   R3 - 2,7K
   R5 - 510
   R6 - 10
   R7 - 68