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"IRIS" metal detector.
http://alex---1967.narod.ru/pribor_iris_1983.djvu
The book is in Russian, but there are pictures.
The principle of operation is described in detail.
Type of metal detector - pulse induction.
In this book there is a complete set of the circuit diagram of the metal detector.
Unfortunately, there are no nominal values of radio elements. But on the Internet there is documentation for a later modification of the metal detector - "IRIS-E", and there are indicated the nominal values of radio elements. Here: http://md4u.ru/files2/irisPI.zip
http://alex---1967.narod.ru/pribor_iris_1983.djvu
The book is in Russian, but there are pictures.
The principle of operation is described in detail.
Type of metal detector - pulse induction.
In this book there is a complete set of the circuit diagram of the metal detector.
Unfortunately, there are no nominal values of radio elements. But on the Internet there is documentation for a later modification of the metal detector - "IRIS-E", and there are indicated the nominal values of radio elements. Here: http://md4u.ru/files2/irisPI.zip
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