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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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Figure 1: Diagram of quartz tester whose core is less than 1 MHz. You need to use this tester, a digital frequency meter (ELM has pub...
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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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I) Presentation : The problem of signal transmission by audio frequency electromagnetic wave led in recent years of practical arrangem... -
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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diagram of the transmitter 1Circuit UM3750 UM86409 MM53200N 1Transistor ZTX321 ou MPSH10 2N2369A ou BSX20 ou BF494 ou BF254 7 Dio... -
Figure 1: Diagram of the circuit flash LED and components list. I had a high brightness LEDs, such as the one you use in assembling EN...
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Capable of measuring ambient temperature of -50 ° to +150 ° C, it is not only suitable for home or office, but also for air-conditioned ro... -
Thanks to the use of a circuit allowing vocal activation (vox), this small transmitter UHF, consumes a current lower than 2 milliamperes a... -
Figure 1: Diagram of the automation photoresistor. thyristor feeds a dc voltage from 12 to 14 V. I realized this automation to s...