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Hobby Circuits designed by Dave Johnson

Last Updated on: Tuesday, October 24, 2017 03:04 PM

Text & Graphics Copyright David A. Johnson, PE  --  ALL Rights Reserved.
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Comparator Circuits

Circuits Designed by David Johnson, P.E. :

Battery Charge Current Indicator

Circuit Indicates Battery Charge Current

Cooling Fan Thermostat (12v)

Current Indicator for Battery Chargers

DC Current Indicator #4

DC Current Indicator 6

Detect Short Xenon Lamp Flashes

Detect the narrow 1uS pulses

Indicate DC Current Flow

Indicates Battery Charge Current

Indicator for Acceptable Voltage

Precision AC Peak Detector

Thermostat for 12v Cooling Fan

Version 4 of a DC Current Indicator

Wide Band Zero Cross Detector

12v Cooling Fan Thermostat

1us Light Pulse Discriminator

40Khz Ultrasound Receiver

AC Peak Detector that is Precise

Acceptable Voltage Indictor

Amplifier for a Xenon Lamp Flash Detector


Hobby Circuits by Category

  David A. Johnson, P.E. about these circuits



Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches

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