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Electronic Circuits

A collection of electronic circuits and projects you can build. Created by our very own members.

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Refrigerator Timer 2013-09-29
A timer for turning ON/OFF the refridgerator at peak load hours (6pm to 10 pm) using 8051
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LM317 supply with switching tracking prereg for good efficiency and minimal heat sink requirements.
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What is true RMS or why does that matter?
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in order to start the car you have to blow to the sensor having a flowsensor (can be madeform a hea
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Presented here is a significant step forward in simple, cheep, and efficient boost converter design
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In the past when requiring to monitor I2C communications between two devices I
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[B]Introduction and Overview[/B] The Secret Knock Detector project is a variation of Steve
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Circuit outputs the min. or max. value of several analog inputs, or provides accurate bi-level clamp
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Good for low-drop diode applications, such as blocking battery back-charging or brownout protection
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Higher power linear regulator
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TL431 provides accurate, adjustable voltage crowbar function for circuit overvoltage protection
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LV, LP, CC driver allows two alkaline or NiMH cells to steadily power a Red LED until discharged.
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Charger performs recommended charging function for rechargeable NiZn batteries
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Low parts-count circuit monitors multiple alarm switches, includes arm and entry delays
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Lead-acid battery charger using LM317 provides auto CC charge, CV top-off, and final trickle-charge
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Weight Scale using SFE's OpenScale platform
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PB latch circuit provides on/off delay function to prevent accidental power switching
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Circuit combines PWM controlled constant-current source with 3rd-order filter using one opamp
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