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Circuits designed by David Johnson, P.E.
Last Updated on: Friday, December 29, 2017 02:53 AM

List of Dave's Circuit Designs

Text & Graphics Copyright David A. Johnson, PE  --  ALL Rights Reserved.
LINKING to Dave's circuits is permitted but DO NOT COPY CONTENT to your WEB SITE server!




Light Sensor / Detector / Monitors Circuits
 
Circuits Designed by Dave Johnson, P.E. :

High-speed 75MHz light receiver

Honeybee Counter

Ideal Blocking Diode Circuit for Photovoltaic Solar Panels

Improved Solar LED Spot Light

Indicates when it is Time to Dust

Is it Time to Dust?

Laser/LED Light Output Intensity Meter

Light Detector with High Ambient Light Immunity

Light Pulse Receiver + Post Amp

Light Receiver Works from 1Khz to Over 70Mhz

Line-Powered Xenon Flash Transmitter

Low Power 40KHz Light Detector

Low Power Amp Monitors Light

Low-power optical interrupter

Micro Power 40Khz Burst Laser Diode Driver

Modified Cheap Solar LED Path Light

Modulated Light Monitor #1

Modulated light receiver circuit

Monitor Clear Fluids

Night Light from White LED

Optical Interrupter Draws Microamps

Optical RFID Test Circuit

Photo Transistor interface Circuit

Reduce voltage to Photovoltaic Solar Panel with Ideal Diode

Remote Extender Circuit

Simple Circuit for White LED Night Light

Single IC forms Senesitive Modulated Light Receiver

Solar Lithium Ion Battery Charger using LT1132

Solar Path Light Improvement

Solar Powered Cell Phone Charger

Solar Powered Flood Light using NiMH Cells

Solar Powered Infrared 1W Security Camera Illuminator

Solar PV Cell Test Fixture

Solar-Powered Pump Motor Controller

Touch Activated Switch

Variable Isolated AC Voltage Spans 0VAC to 280Vac

Xenon Lamp Flash Detector Amplifier

10mhz to 20mhz Laser Light Detector 

10Mhz to 20Mhz Light Receiver

12v Light/Dark Lamp Switch

12v Touch Switch Exciter Circuit

1uS Light Pulse Receiver + Post Amp

20Mhz VCSEL 3mw Laser Test Circuit

2uS Light Pulse Receiver

30Khz Light Receiver Amp

40Khz Laser Burst Detector

40Khz Light Detector with High Ambient Light Immunity

40KHz Light Receiver Front-End Circuit

40KHz Modulated Light Detector

40khz TV-VCR Light Source Repeater

50Mhz Broad Band Optical Fiber Receiver Version A

5Mhz Broad Band  Optical Fiber Receiver

6V to 24V DC Day/Night Switch

8-Solar Cell Lithium Ion Battery Charger Version 2

AIR Transparency Monitor-Pg2

Amplifier for a Xenon Lamp Flash Detector

Broad Band 2Mhz Optical Fiber Receiver

Cascode Light Receiver Circuit

Clear Fluid Detector #2

Clear Fluid Monitor

Color Film Makes Optical Filter

Convert Solar Powered Light to Flasher

Day/Night Switch-24vAC Powered

Dusk To Dawn Latching Relay

Eight-Solar Cell Lithium Ion Battery Charger Version 3

FET Input High Speed Light Detector


 

Dave's Circuits

Hobby Circuits

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Copyright  January, 1998 - December, 2017     David A. Johnson & Associates.  All Rights reserved. 


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