APTDF100H170G

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Diodes, specifically bridge rectifiers, are widely used in many electrical and electronics applications. The APTDF100H170G is a widely used, low-cost, isolated 4 Diode bridge rectifier with a current rating of 100A and a repetitive reverse peak voltage of 1700 volts. This rectifier has a maximum average forward rectified current of 50A and an operating temperature range of -25 to 85 degrees centigrade.

The working principle of the APTDF100H170G is based on the principle of four diode rectifier or bridge rectifier. It is made up of four diodes, forming a bridge formation with its four terminals. The circuit uses a transformer which provides input voltage as secondary winding across its terminals A and B.

When the three-phase AC voltage is connected to the bridge rectifier, the voltage waveform at the output of the bridge rectifier is a unidirectional pulsating DC signal. As the diodes conduct alternately during the half cycle of the input signal period, the output waveform consists of a train of voltage pulses in a single direction. The average DC output voltage from the rectifier is equal to the peak AC input voltage divided by pi or 3.14.

The four diodes in the bridge rectifier also reduce the magnitude of the peak rectified current. This reduces the device’s Power dissipation and increases its efficiency. Since the forward resistance of a standard bridging rectifier is very low, at least one of the output voltage looks like a capacitive divider.

This bridge rectifier is designed to reduce harmonic contents in the load current and resists the flow of electricity in the reverse direction. It is commonly used to feed regulated voltage in normal AC lines. The world standards and agencies have set specific standards and conditions for the handling of bridge rectifiers, which must be adhered to when using them in applications.

The APTDF100H170G is an isolated rectifier, meaning it is designed to provide additional protection against shorts and to direct the flow of current only in one direction. With this protection feature, the APTDF100H170G is commonly used in applications like DC motor drives, solar inverters, welding machines, and other similar applications.

In conclusion, the APTDF100H170G is a bridge rectifier that is widely used in many electrical and electronics applications, due to its low cost, efficient design, and protection features. Its working principle is based on the four diode rectifier or bridge formation and its output waveform consists of a train of voltage pulses in one direction which reduce harmonic contents in the load current and resist the flow of electricity in the opposite direction.

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