Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Metal dedector or treasure Finder

Status
Not open for further replies.
coin finder pi circuit

You can search for example the U.S. patent data base, and of course our old friend Google...

The patent office is at https://www.uspto.gov/patft/

Ted
 

metal detector bratsk city ru

Here are some schematics.
Regards
 

schéma du circuit détecteur de métaux pi

lots of schematics and free tips and advice

**broken link removed**

pi classroom ask questions etc
**broken link removed**
 

circuit diagram rusian metaldetector

Hi,

Two very interesting constructions on AT90S2313 are here:

**broken link removed**

First FM (coin 25 mm is detected on 0.1 m) is on English:

**broken link removed**

Second construction, best one (coin 25 mm is detected on 0.25 m, also working under water), on pulse method is only on Russian:

**broken link removed**

Circuit diagram:

**broken link removed**

The author on the beach:

**broken link removed**

73! klug.
 

metal detector bra tsk city ru

Hi ,
Look on this Russian site , its veri useful - actually there is veri gut section for
PI detectors schematic .
**broken link removed**
Best, :D
 

metal detector schema cs209a

ted said:
You can search for example the U.S. patent data base, and of course our old friend Google...

The patent office is at https://www.uspto.gov/patft/

Ted

if you visit the russian site above
he has 60 or so patent documents you can download

dont just welly in a download them all

do as ted recomends then look for the numbered full document on the russia metal site youll find them all there {just about} and also a few on geotech
 

schema metal detector

The heart of the circuit is a single IC the CS209A made by Cherry Semiconductor. The detector, is a single 100uH choke. The IC has an integral oscillatorm the choke forms part of an external LC circuit, its inductance being altered by the proximity of metal objects. It is the change in oscillation that is amplified and demodulated. Led 1 will light and the buzzer will sound when the choke change sinductance. Set up is easy, VR1 is adjusted with the cjoke away from any metal source so that the LED lights and buzzer sounds. The control is backed off so that the LED goes out and buzzer stops. Now when the choke comes into contact with any metal object that alters its inductance, LED 1 and the buzzer will activate.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top