Friday, February 10, 2012
A flashing LED "flash"Thursday, February 9, 2012
Reduce the voltage supply 230 VAC to a DC voltage transformerlessWednesday, February 8, 2012
Tester quartz up to 1 MHzTuesday, February 7, 2012
Automatism PhotoresistiveMonday, February 6, 2012
A three-tone ringerSunday, February 5, 2012
A seven segment display digital giantSaturday, February 4, 2012
An RX for HF anti burglar of pocketFriday, February 3, 2012
An TX for HF anti burglar of pocketThursday, February 2, 2012
An LED boardWednesday, February 1, 2012
An electronic candleMost visited posts this week
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I have a small company whose premises consist of two long wings of the building and everything is served by three entries spread: Well ...
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Figure 1: Diagram of LED electronic clock. If you have at your disposal in a bottom drawer of the few integrated circuits making up t...
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How is it possible to power an LED with high brightness, the conduction voltage of 3 V with 1.5 V battery? That is what this article will te...
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diagram of the transmitter 1Circuit UM3750 UM86409 MM53200N 1Transistor ZTX321 ou MPSH10 2N2369A ou BSX20 ou BF494 ou BF254 7 Dio...
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Last month we offered you a video and audio-stereo scalable to 4 channels on 2.400, 427, 454 and 481 GHz. This article aims to let you ...
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This LED board displays a maximum of 46 characters scrolling speed is easily adjustable using buttons. It operates independently and all ope...
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Figure 1: Diagram of the automation photoresistor. thyristor feeds a dc voltage from 12 to 14 V. I realized this automation to s...
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Figure 1: Diagram of the detector of magnetic material. If you approach an object's magnetic core of Ferroxcube choke L1, the LED li...
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It's a small UHF radio receiver that receives the signal from the transmitter (for the latter see previous story) as they are close, eve...
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Figure 1: Diagram of the circuit without power transformer and component list. Here's a good time that I manage to get the low vo...