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Spider coil

Spider coil for induction pulse metal detector

According to  reviews on the Internet, the spider coil can work with any pulsed metal detectors, but for proper processing of discrimination and selection, you need to make the coil as close as possible to the parameters of the author’s coil. The result should be a coil with a small parasitic capacitance, with the following parameters: L = 400 uH, …

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Concentric coil for IDX Pro/TGSL

This document is intended to demonstrate one method of constructing Concentric Co-planer coils. While it is targeted toward the home hobby  builder it is not as simple as the more popular DD coil configuration. The Concentric coil configuration does however offer some advantages  over the DD coil. Some of these advantages include cost of construction, lighter weight, easier pinpointing, greater …

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Simple PI coil for pulsed metal detector

Among the owners of pulsed metal detectors Coil  sensors enjoy deserved fame. It is with their help that it is possible to obtain record depths of detection for small objects the size of a coin. The design features of such sensors make it possible to obtain an increase in the depth of detection of targets by up to 20% compared …

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Basket Coil for Pulse Induction

This coil  allows you to get more depth, but it is more difficult to manufacture. And so – we take a board or a piece of chipboard of the right size and draw two circles on it. The diameter of the first circle is 11cm, the diameter of the second is 18cm. Then we divide each circle into 21 equal …

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Pulse Induction coil 2

The great advantage of this metal detector is the ease of manufacture of the sensor. In the simplest case, it consists of 27 turns of wire with a diameter of 0.6-0.8 mm wound in a pile on a mandrel with a diameter of 21 cm. For this MD is very well suitable coil “basket” from KASHCHEY Ø22cm. Very accurately localize …

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Pulse Induction coil 1

You can assemble your first pulse metal detector and, here, it came to manufacturing a search mono coil. And if you have some financial difficulties, You faced a difficult task – to make the coil yourself from the cheapest possible materials. The easiest way for self-production seemed to me such a structure: we take a disk made of sheet material …

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Coil calculation

Spider coil for induction pulse metal detector

Caluclate the parameters of Pulse Induction metal detectors Multi-turn loop of wire for metal detectors can be represented as a multi-layer air core coil with a square cross-section of winding. This coil belongs to the “Short coil class”. Wheeler’s simple formula is not suitable for calculating such a coil, as we noted in the article “Calculation of a multi-layer coil.” …

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Search coils

Spider coil for induction pulse metal detector

The search coil is a vital part of your metal detector. It is the flat, typically circular disk, which generates a magnetic field and senses metallic targets in the surrounding environment. It is located at the end of the stem and is connected to the control housing via a cable normally wound around the stem. The size and depth of …

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