Circuit Diagram

Car Battery Charger

Published:2012/12/11 0:38:00 Author:muriel | Keyword: Car , Battery Charger

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Automatic Load Sensing Power Switch

Published:2012/12/11 0:38:00 Author:muriel | Keyword: Automatic, Load Sensing, Power Switch

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Automatic 12V Lead Acid Battery Charger

Published:2012/12/11 0:37:00 Author:muriel | Keyword: Automatic , 12V , Lead Acid Battery, Charger

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6V to 12V Converter

Published:2012/12/11 0:37:00 Author:muriel | Keyword: 6V to 12V, Converter

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12V to 120V Inverter

Published:2012/12/11 0:36:00 Author:muriel | Keyword: 12V to 120V, Inverter

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12V To 24V DC-DC Converter Circuit

Published:2012/12/11 0:35:00 Author:muriel | Keyword: 12V To 24V, DC-DC , Converter Circuit

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Wire Loop Alarm

Published:2012/12/11 0:35:00 Author:muriel | Keyword: Wire Loop, Alarm

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Water Detector With Sump/Bilge Pump Controller

Published:2012/12/11 0:34:00 Author:muriel | Keyword: Water Detector, Sump/Bilge, Pump Controller

This moisture detector with pump controller is built around the special purpose LM1830 IC. The LM1830 is designed to detect moisture by passing an AC current through a set of probes. An internal comparator compares the resistance of the probes to an internal reference. When the resistance between the probes is low (indicating the presence of water or other conductive liquid) then the IC triggers it's output. An AC signal avoids electroplating and corrosion problems that are common when DC is used. To provide an adjustable delay hysteresis to avoid cycling the pump, a timer based around the 555 is used a range of about 5 seconds to two minutes. In this way the pump will stay active for a set amount of time even if the fluid level is below that of the probes.   (View)

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Video Stabilizer/MacroVision Removal

Published:2012/12/11 0:33:00 Author:muriel | Keyword: Video Stabilizer, MacroVision Removal

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Video Activated Relay

Published:2012/12/11 0:32:00 Author:muriel | Keyword: Video Activated, Relay

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Touch Switch

Published:2012/12/11 0:32:00 Author:muriel | Keyword: Touch Switch

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Time Delay Relay II

Published:2012/12/11 0:31:00 Author:muriel | Keyword: Time Delay , Relay

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Time Delay Relay

Published:2012/12/11 0:30:00 Author:muriel | Keyword: Time Delay, Relay

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Stepper Motor Controller

Published:2012/12/11 0:30:00 Author:muriel | Keyword: Stepper Motor, Controller

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Simple Two Speed Contactor DC Motor Controller

Published:2012/12/11 0:29:00 Author:muriel | Keyword: Simple , Two Speed Contactor, DC Motor, Controller

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Simple Touch Switch Circuit

Published:2012/12/11 0:28:00 Author:muriel | Keyword: Simple Touch, Switch Circuit

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Simple Servo Controller

Published:2012/12/11 0:28:00 Author:muriel | Keyword: Simple Servo, Controller

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Simple Polarity Tester

Published:2012/12/11 0:27:00 Author:muriel | Keyword: Simple Polarity, Tester

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Simple Lie Detectors

Published:2012/12/11 0:27:00 Author:muriel | Keyword: Simple Lie, Detectors

Here's a simple lie detector that can be built in a few minutes, but can be incredibly useful when you want to know if someone is really telling you the truth. It is not as sophisticated as the ones the professionals use, but it works. It works by measuring skin resistance, which goes down when you lie.   (View)

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Pulse Width Modulation DC Motor Control

Published:2012/12/11 0:26:00 Author:muriel | Keyword: Pulse Width, Modulation DC Motor, Control

Often, people attempt to control DC motors with a variable resistor or variable resistor connected to a transistor. While the latter approach works well, it generates heat and hence wastes power. This simple pulse width modulation DC motor control eliminates these problems. It controls the motor speed by driving the motor with short pulses. These pulses vary in duration to change the speed of the motor. The longer the pulses, the faster the motor turns, and vice versa.   (View)

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