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

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

Got Designs?
Please eMail if you want me to link to and/or post your original design. 
NOTE:  We make every effort to link to original material posted by the designer. 
Please contact us if our link is not to your site!  Thanks.

Hobby Circuits designed by Dave Johnson

Last Updated on: Tuesday, June 01, 2021 03:06 PM

List of Hobby Circuit Designs

Text & Graphics Copyright © David A. Johnson, P. E. -- ALL Rights Reserved.
LINK to Dave's circuit, but DO NOT COPY to your WEB SITE server!

   

Oscillator Circuits

ELC signal between 200Mhz-400Mhz

Flexible Outputs from Square Wave Driver

Gated 125Khz Oscillator

Gated Crystal Oscillator with Very Low Power

Highly Stable Lower Power Oscillator

Inductive Pulse Receiver (175Khz)

LC Oscillator Medium Power 125Khz

LED Test Signal Generator-40Khz

Light to Frequency Converter

Measure Button Battery Cell's Internal Resistance 

Oscillator Draws 2 Nanoamps

Oscillator with Ultra Low Current

Over-Temperature Micro-Power Alarm

Parallel LC Oscillator with CMOS Inverter 

Ultra Low Power 32Khz Crystal Oscillator

VCO from CMOS Schmitt Trigger IC

Version 4 of a Ultra Low Current Oscillator

Very Low Voltage Oscillator Circuit

 

100Khz Low Power Light Receiver

125KHZ Medium Power Oscillator

125khz Oscillator with Medium Power

125Khz Ultra Pure Sine Wave Signal Source

40Khz Burst Laser Diode Driver

Astable Multivibrator with Very Low Power

Astable Ultra Low Power Multivibrator

Cheap Low Power 3v 2hz Oscillator

CMOS Inverter forms a Resonant LD Oscillator 

CMOS Inverters Form 125Khz Oscillator

CMOS Oscillator, Draws Only 0.5ua

 
 
 

Hobby Circuits by Category

Dave's Circuits

eMail:  David A. Johnson, P.E. about these circuits
HOME Schematics Index Hobby Corner Dave's Circuits Contact Info
Imagineering Ezine Dave Johnson & Associates Faraday Touch Switches

 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy

Copyright  January, 1998 - June, 2021     David A. Johnson  All Rights reserved. 
 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.