More about technology (449)

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| A proximity switch is one which requires your hand to be merely near it as opposed to on it to operate.

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| The tracer is intended for detecting spurious electro-magnetic Interference (EMI), particularly at frequencies above 30MHz.

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| This simple circuit acts as frequeney multiplier whieh converts any sloped input waveform into a distorted output waveform whose frequen...

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| When voltages are measured, it is not always necessary to find the exact value Often, it is sufficient to check whether a potential lies...

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| EURO PE ON THE WAY TO A STANDARD TELEPHONE CARD

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| In this article we answered your letters about our articles of the last months.

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| The SAA3049 checks and converts received coded data (RECS80/RC5) into latched binary outputs. The device address can be hard-wired for a...

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| This monitor is used by the author to guard the microprocessor in his PC. The temperature sensor is a resistor, Rq, with negative temper...

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| This circuit shows how a regular 4-bit binary munter may he extended with an upidown function just by adding four XOR (exclusive-OR) gat...

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| The interesting point of this circuit is that a D-type histahle is used as an inverter. When the level at the input changes from high to...