Electronics Design Ideas
Electronics Design Ideas
LED Tester
This. project is very simple. It is just a 4.5v supply with a LED and resistor in series. When the...
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1 watt LED Lamp
This circuit is an extension of the 1-watt LED Driver project. It is a very clever circuit and will illuminate...
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1 watt LED Driver
This circuit will drive a 1 watt LED from 1 or 2 cells (commonly called “dry cells”). The circuit consists...
Read moreDigital Countdown Timer
This circuit provides a visual 9 second delay using a 7 segment digital readout LED. When the switch is closed,...
Read more9 Second Timer
This circuit provides a visual 9 second delay using 10 LEDs before closing a 12 volt relay. When the reset...
Read moreShort Time Relay on-off
The two circuits below illustrate opening a relay contact a short time after the ignition or ligh switch is turned...
Read moreTime Delay Circuit using LM339
In this circuit a LM339 quad voltage comparator is used to generate a time delay and control a high current...
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