# What happens if gate voltage of an ON scr is decreased?

Would you like to merge this question into it?

#### already exists as an alternate of this question.

Would you like to make it the primary and merge this question into it?

#### exists and is an alternate of .

A: Nothing after an SCR conduct the gate has no more control to shut it off. So how do we shut off an SCR two way reverse the voltage on the SCR or reduce the current below the holding current. SCR are not DC friendly once on they stay on until see above
3 people found this useful

decreases

# How can you tell which is the gate terminal on an SCR?

Since the gate needs very small amount of current for operation the small terminal is the gate.

# What happens in a circuit to current if voltage decreases?

Voltage = Current x Resistance. If Resistance remains constant and voltage decreases then current decreases by the ratio V/R.

# What is a threshold voltage in scr?

the voltage at which the current conduction occur

# How do you control high voltage using SCR?

By giving proper gate triggering voltage... it can used to control the high power application like ordinary pn junction diode.

# What is reverse breakover voltage in scr?

That depends, you should look it up in the datasheet. For some thyristors it's as low as 6V

# Why gate is closer to cathode in scr?

A: To partially eliminate the problems with cathode current hugging

# What happen when plus ve gate pulse given to reverse baise scr?

You cannot turn an SCR off by reverse biasing the gate. Once it is on (anode to cathode), it stays on until the forward current AND the gate current drops to the required thre

yes

# What is happening to the voltage-gated channels at this point in the action potential?

Na + channels are inactivating, and K + channels are opening..

# What happens if voltage is constant and current is varying when an scr triggers?

Even if the current is varying,as long as the current reaches the value required to trigger the SCR, it will snap into operation. The SCR will remain in operation until the cu

# Why does SCR turn ON by gate current?

to make the revers biased p-n junction in SCR to be conducting.when we apply gate signal across gate and cathode it establish conducting part,thus the current from anode to ca
In Electronics Engineering

# What is happening to the voltage value of scr if its gate is triggered?

the anode-cathode voltage drops
In Electronics Engineering

# What happens to current if the voltage is decreased?

P = V * I. If power remains constant, then as voltage decreases, current will increase.
In Electronics Engineering

# What will happen to voltage if resistance decreases?

Nothing, but the current will increase.
In Electronics Engineering

# What are the current and voltage ratings of scr?

Check the databook for the SCR you are using. Without knowing the part number, I can't look it up for you.
In Home Electricity

# What happen when voltage decreases and current increases?

Electricity transmission/distribution systems operate at very high voltages in order to minimise the value of current flowing in the transmission lines. This is because, for