The minimum should usually be selected like this: round-up from your designed or simulated reverse voltage to the next higher PIV for a diode family that gives you the current you require. If you are making a full-wave rectifier for 220 Vac, you'd typically select a diode with a 240 or more PIV to give some "head room" and "safety factor" on the diode. We usually select the PIV larger than the largest normal reverse operating voltage in our circuit.
The exact details depend on the circuit design. Start conducting current in the normally "OFF" direction, which will damage the diode and often do things you don't like to your circuit. Binary Fortress Software Ltd has 5 total employees across all of its locations and generates 1.27 million in sales (USD). Applying higher voltage will cause the diode to destroy. Company Description: Binary Fortress Software Ltd is located in Kanata, ON, Canada and is part of the Other Miscellaneous Store Retailers Industry. In other words, PIV is defined as the maximum voltage that can apply to a diode in the reverse direction.
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As the prime mover rotated, the field of the DC generator was adjusted as required, hence its armature current-controlled, this current would be adjusted in magnitude and direction, and this, being fed to the armature of the DC motor, would create a driving torque as it reacted with the continuously applied motor field.Ĥ0) When the PIV rating of a diode is exceededĮxplanation: PIV stands for Peak Inverse Voltage. The DC motor had its magnetic field continuously excited while that of the DC generator, the magnetic field could be controlled in intensity and direction.
The armature of the DC generator was directly connected to the shunt motor's armature to be controlled. The system consisted of any prime mover, including an AC motor driving a DC shunt generator. Previously, it was quite convenient to obtain a variety of speeds and reversing for industrial applications. Explanation: The Ward Leonard system was implemented and used to control the speed of DC shunt electric motors.