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After triggering an SCR (Silicon Controlled Rectifier) and removing the gate pulse, the SCR will continue to conduct current as long as the anode current remains above the holding current threshold. Once the current falls below this threshold, the SCR will turn off and stop conducting. This characteristic allows the SCR to be used in various applications, such as in power control and switching circuits.

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What is the ratio of latching current to holding current?

Latching current is the current flowing between anode to Cathode when thyristor is turned on using gate pulse. If the gate pulse is removed before the required min amount of latching current value is not reached thyristor will turn off. To keep the thyristor in on state the gate pulse duration should be so adjusted that the min latching current value is reached before it ends.


Why sawtooth waveform is used in thyristor triggering circuit?

A sawtooth waveform is used in thyristor triggering circuits because it provides a linear and predictable voltage ramp, allowing for precise control over the timing of the thyristor's conduction. The waveform's rising edge can be synchronized with the zero-crossing of alternating current (AC), enabling accurate phase control in applications like dimming and motor speed control. Additionally, the sawtooth waveform facilitates the generation of a trigger pulse at a specific point in the AC cycle, ensuring reliable and consistent operation of the thyristor.


Why three-phase six pulse rectifier is better than three-phase three pulse rectifier?

By this process all errors to be removed and electricity distribution becomes storng. Rectifier always react all abstraction which law given be Ohms.


Why are dc signals that change called pulse trains?

DC signals that change are called pulse trains because they consist of a series of distinct electrical pulses that occur at regular intervals. Each pulse represents a sudden change in voltage or current, creating a train-like sequence when viewed over time. This term reflects the repetitive nature of the pulses, similar to a train of cars following one another. The characteristics of pulse trains, such as pulse width and frequency, are crucial in various applications, including digital communication and signal processing.


A pulsed laser produces 47mj per pulse. The pulse repetition time is 2.5ms and the duty cycle is .008. Find the pulse duration?

(shiwwasuji@gmail.com)Duty Cycle DC is the ratio of pulse duration to the pulse repetition time periodDuty Cycle DC = pulse duration (t)/pulse repetition time period (T)Pulse Duration (t) = 0.008 x 2.5 ms

Related Questions

Characteristiccs of UJT?

The characteristics of a UJT are: stable triggering voltage, negative resistance, high pulse current capability and low value of triggering current.


Is there a difference between edge triggering and pulse triggering?

Yes, there is a difference between edge triggering and pulse triggering. Edge triggering occurs when a circuit changes state based on the transition of an input signal (e.g., from low to high or high to low). Pulse triggering, on the other hand, involves triggering a circuit based on the detection of a specific pulse width within the input signal.


Why do you require the synchronized pulse for triggering the SCR?

Heart beat


What is the ratio of latching current to holding current?

Latching current is the current flowing between anode to Cathode when thyristor is turned on using gate pulse. If the gate pulse is removed before the required min amount of latching current value is not reached thyristor will turn off. To keep the thyristor in on state the gate pulse duration should be so adjusted that the min latching current value is reached before it ends.


Can we replace a thyristor by a mosfet?

No because a mosfet does not work the same as a thyristor. In a thyristor the current flows even when the gate pulse is removed, until the current stops. That is not the case for a FET.


When did Wipeout Pulse happen?

Wipeout Pulse happened in 2007.


When did Pulse Racer happen?

Pulse Racer happened in 2003.


What is difference between output current and pulse current?

It is a language in electronics describing whether the output is a pulse or direct current for any output.


When can you not take an apical pulse?

When your having a Ding removed.


What happens to the current in a circuit if a volt battery is removed and is replaced by a 3 volt battery?

The battery cannot be removed quickly! Inductance of the wiring stores energy and keeps the current flowing and decaying smoothly. There will be an opposite polarity, higher voltage pulse on the battery terminals, limited by the circuit capacitance only.


Is the jeep rubicon elocker a constant current flow or pulse switched?

Pulse to on/off


What happens to the current in a circuit if a 1.5-volt battery is removed and is replaced by a 3-volt battery?

The battery cannot be removed quickly! Inductance of the wiring stores energy and keeps the current flowing and decaying smoothly. There will be an opposite polarity, higher voltage pulse on the battery terminals, limited by the circuit capacitance only.