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

DiscoverCircuits.com has links to 45,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.

HOME Schematics Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches
Welcome to DiscoverCircuits.com - online since 2002

See Media Kit for
Advertising Opportunities

Attention Designers:  Please alert us by eMail if we have linked to sites
where your original material has been copied without your permission.
We will change to the LINK to your site.  
Thank you.

 

Areas of Circuit Design & Expertise
Last Updated on:  Tuesday, October 17, 2017 10:02:49 AM

David Johnson, P.E., received his Professional Engineer Colorado license #17425 in 1980.  He holds eight patents with two more pending.  He brings a comprehensive background in research, product development, applications engineering and project management that can help you prove new product concepts or make cost and performance improvements of existing product. If you would like to discuss ways David Johnson can provide support for your project, please phone or email us.


Amplifiers
  • RF
  • Very low power
  • Low level
  • Light to Voltage
  • Current to Volatage
  • Voltage to Current

Sensors

  • Light
  • Temperature
  • Pressure
  • Humidity
  • Speed
  • Capacitance proximity
  • Mechanical position
  • Human proximity and motion
  • Human finger touch
  • Piezoelectric vibration
  • Ultrasonic
  • Combustible gas
  • Smoke
  • Optical Fiber
  • Gas bubble in blood
  • Electric Field
Power Systems
  • Linear and switch mode power supplies
  • Photovoltaic solar
  • Battery Charger
  • Solid State Relays 
  • Multi-phase alternators
 

Misc. Systems

  • Security Alarms
  • Wind energy
  • RFID
  • Medical
  • Data acquisition
  • Optical through-the-air Communications
  • Anti-carjacking alarm

Signal Generators

  • RS-170 B&W video
  • Very low power pulse
  • Low power RF
  • Square, triangle and sine wave
  • High Voltage pulse
  • High current pulse
  • Variable pulse width/ height
  • High power audio beepers
  • Modulated light pulse

Control Systems

  • Stepper motors
  • Touch activated switches
  • Jail light and door controls
  • Security access
  • Material handling machines
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: 24 October, 2017 02:55:31 PM


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.