Entries by Amilcare

The IGBT Protection

. Principle of operation The first IGBT thyristors were modified to be able to turn on with a voltage command. Consider the BJT equivalent circuit of a thyristor and a MOSFET transistor is added between the collector and emitter of the NPN (lower transistor). The gate of the MOSFET becomes in this case the gate of the IGBT, […]

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Fast MOSFET Test

. Often in online discussion I find myself having to explain how a mosfet is head, the test with a multimeter is the fastest but, not from the certainty that the component functions properly in impulsive regime. Rummaging through the drawers where support temporarily purchases made at trade shows I found for […]

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Fuel Cells

. Rechargeable batteries are not clearly enough to power electric cars for a considerable period of time. Without reliable and capacious batteries, you lose the challenge of mass mobility. So the industry is working more actively to the problem of the sources of alternative energy to oil. And the direction of the most promising alternative to […]

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Albert Einstein and the GPS

. I'm a big fan of Albert Einstein. Many physicists would agree that his theories are the purest expression of genius in the history of humanity with all the ensuing applications. In this case, we talk about the Global Positioning System (GPS). The GPS was developed by the US military in the middle of […]

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BATTERY POWERED TESTER

. BATTERY POWERED TESTER Behind pressing demands of a friend who works as accepting officer at a service center have designed a fast battery tester. You can not imagine how many come with remote controls do not work because of dead batteries, more often than those who arrive and you see replace the batteries to test […]

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Circuits restraint soft

. The use of a single tactile button to toggle a circuit ON and OFF requires a circuit containing a logical bistable latch. A latch that can be implemented using a flop flop D or by using a positive feedback around the two amplifiers or inverting logic gates. Eg, an ON-OFF switch lock […]

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Bonus TV for transition to T2

. . What is the Switch-off? After the transition from analogue to digital terrestrial (2008-2012), even changes the terrestrial television transmission mode. Because of the bandwidth assignment 700 Mhz telephony (5G needs space and the state from the sale of frequencies has already collected 6,5 billion), the television world loses […]

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POWER BUTTON SWITCH

. The switches to momentary action button at low current, as types “tactile” for PCB mounting, They are inexpensive and available in many different styles. The types of hooking, on the other hand, They are often larger, more expensive and available only in a relatively limited range of styles. This can be a problem if […]

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Preheat soldering iron

. noninvasive improvement of my economic Station 936 built and marketed under several brands, mine in particular is marked ATTEN but you can find several on the bay 30 € or less. This soldering station to have chosen for its price very affordable for all but, in addition to this […]

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AUTOMATIC CHARGER

. This project is essentially to "rejuvenate" a New Electronic kits, this is the original scheme The problem arises for two factors, the relay in the long run will ruin the integrated and become obsolete and practically impossible to find at reasonable prices. Essential conditions of this kit were the absence of absorption in the stand network […]

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