Whites Classic I metal detector schematic diagram

  
Inside:
Repository
The White`s Classic I was a very simple, easy to use machine, ideal for the entry-level detectorist to pick-up-and-go. It was a simple detector with no bells or whistles, only an on/off switch and a turn knob for a discriminator. It did not have much depth but it did find coins, jewelry and relics in the hand of a skilled hobbyist. While the Class
Whites Classic I metal detector schematic diagram - schematic

ic I was good for its day, there are now better beginner metal detectors on the market. The detector used 4 transistors (MPS3638, MPS6520, MPSA13 and 2N3904) and only a few ICs: a CD4066 digital switch, three LM393 dual comparators, LF444, LF441, LM358 op-amp ICs and an LM2930-8 3-terminal positive regulator. All resistors in the schematic are 1/4 watt, +/- 5% tolerance and all capacitors are in microfarads unless marked otherwise. Capacitors greater then 1 uF are aluminum electrolytics. Capacitors less than 1uF are polyester film type. Capacitors marked with a triangle are stacked polyester type. Areas inside dashed lines are not located on the main PCB.



Recommended videos


  • HOW TO DIY ONE OF THE BEST METAL DETECTOR CIRCUITS (Electronic circuits)
    Duration: 15:05.
  • How to Make a Simple Metal Detector
    Duration: 3:52.
  • HOMEMADE METAL DETECTOR ~ Simple
     

News


  • The Australian Financial Review
    The Australian Financial Review jobs may not quite prove saviour for US employment is the domain of rapid progress. Moore's Law, for example, holds that the number of transistors on a doubles every two years. Hiring promises are doublin
     17 January 2017
  • Eagle-Tribune
    tutoring, art coming to Hampstead liaryHAMPSTEAD, N.H. — tutoring and a new art exhibit are on their way to the Hampstead Public Liary. A free tutoring session will be held at the liary from 3 to 4:30 p.m. Wednesday, Jan. 18. Liary
     16 January 2017
  • BBC News
    If a lithium-ion battery cell charges too quickly or a tiny manufacturing error slips through the net it can result in a short - which can lead to fire. In Feuary 2016, the US National Transportation Safety Board issued a warning
     16 January 2017
  • nanotechweb.org
    nanotechweb.org ighten up... integrated with wafer-scale plasmonic waveguides. The new device could be used in next-generation optoelectronics devices and photonics in applications such as high-performance sensors and for data-communica
     16 January 2017
  • The Independent Republic
    Baxley Report Jabil Circuit, Inc. (JBL) ended last trading session with a change of 0.81 percent. It trades at an average volume of 2.11M shares versus 1.17M shares recorded ...High Volume Tech Stocks: LifeLock, Inc. (NYSE:LOCK), Jabil C
     16 January 2017
  • Motley Fool Australia
    share to buy on the ASX?One of my favourite shares on the ASX would have to be printed board software provider Altium Limited (ASX: ALU). Thanks to the explosive growth of the connected device market, better known as the Internet of Thing
     16 January 2017
  • Forbes
    News18 : New Galaxy S8 Hardware Leaks, Nokia's Secret Smartphone, Samsung's Folding PhoneTaking a look back at seven days of news and headlines across the world of Android, this week's Android includes new images of the Samsung Galaxy S8
     14 January 2017
  • Moneycontrol.com
    locked at 5% upper on IT project from US GSATrigyn locked at 5% upper on IT project from US GSA. Shares of Trigyn were locked at 5 percent upper at Rs 111.50 on Thursday after its subsidiary received IT contract from the independent ag
     12 January 2017
  • Reuters
    to raise stake in optoelectronic firm to 9.8 pct from 4.9 pctJan 12 French media and entertainment company Technicolor said on Thursday that core profits last year fell short of its forecast, hit by lower than anticipated sales in its Conne
     20 December 2016

.