Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 40,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to original material posted by the designer. 
Please let us if you would like us to link to or post your design.

HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


   Optical Communications

  • High speed fiber optic communications
  • Light source modulation methods, fluorescent, LED, xenon,
  • Infrared light passing filters using photographic film
  • Light pulse signal processing methods
  • Long range through-the-air optical communications
  • Long range air transparency, light attenuation, monitoring system
  • Wide area information broadcasting using modulated light
  • Infrared light emitting fluorescent lamps
  • Optical/RF link hybrids

   Sensors and Instruments

  • Optical fiber sensors and couplers
  • Oxygen concentration monitor using speed of sound
  • Bubble detection in blood lines with ultrasound
  • Earth's Electric field disturbance monitoring system
  • Inhalation detector for pulsed oxygen delivery system
  • Smoke stack flue gas monitoring methods
  • Cesium lamp magnetometer, 100MHz exciter
  • Electro-luminescence display degradation

   RF Systems

  • Micro powered RFID card reader methods
  • RFID card readers using ferrite antennas
  • Cordless telephone systems
  • Carrier current telephone systems
  • Low power 915MHz & 2.45GHz transmitters

   Control Systems

  • Multi-HP brush and brushless DC motor design and controls
  • Wind power generator controls and monitors
  • Solar heating controls using hot water
  • 4 wheel driven and steered robotic platform
  • Security access control systems using optical techniques
  • Jail door, light and intercom systems

   Unusual Devices and Methods

 
  • Blood and beer yeast dehydration methods with ultrasound
  • Beer sterilization methods using electric discharge in fluid
  • Piezoelectric spark plug for cars
  • Electro-viscus materials using cab-o-sil (SiO2)
  • Chemical memory, using tiny electrets triggered by compression waves
  • Gold ore separation using electrostatics
  • Low power LED flashers
  • Touch activated switch circuits
  • Miniature AC/DC power supplies
Faraday Capacitance Proximity Touch Switches Six (6) Models Available           Prices           Place an Order           Project Photos


David A. Johnson, P.E.

Consulting Electronics Engineer

6601 County Road 6410    Lubbock, TX  79416-9717

Phone:  806-368-7747  Central Time Zone

email: dave@discovercircuits.com                    
>>> DiscoverCircuits.com
Last Updated on: 30 November, 2017 07:23:43 AM


David Johnson & Associates:  Credentials              Design Expertise              Services Offered
Sample R&D              Products & Photos               Past Client List              Professional Fee
 
Copyright 2000-2017 David Johnson. All rights reserved.   Any trademarks are the property of their respective owners.