How might two similar SCRs be connected to safely distribute the power load of a circuit?

In parallel, reverse polarity.

Also, called Tri-ode AC switch.

Small voltage in the Gate controls the flow of large voltage at the other terminals. TRIAC'S, unlike SCRs which let the voltage in only one direction, facilitate flow of current forward and backward. You can think of TRIAC as two SCR's together, back to back.

See Wikipedia's article TRIAC

Also, see GlobalSpec site for the article Triacs Information

And, Electronics Hub site for the article TRIAC

Please see well-illustrated article from Electronics Notes on What is a Triac?

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What are the three terminals of an SCR?

Anode, cathode, and gate.

From wp2ahg:

SCR = Silicon-controlled Rectifier. The electronic symbol looks like a diode symbol, but with a 'gate' line at the cathode junction.

SCR's have an Anode, a Cathode and a Gate.

The SCR's are made of silicon. They regulate power, current inversions such as converting AC to DC current, called rectification. As SCR's can work with high amperes and voltage, they are used where such a need exists, such in industrial systems.

For more information, please see the Components 101 site, for the well-illustrated article called SCR (Silicon Controlled Rectifiers) - Introduction, Working and Applications in Power Electronics

Also, see TutorialsPoint site for the concise article Silicon Controlled Rectifier

See Wikipedia's article on Silicon controlled rectifier

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Which of the following devices acts as two SCRs connected back to back, but facing in opposite directions and sharing a common gate?

TRIAC

From badwolf.j.:

TRIAC: Triode for Alternating Current

Also, called Tri-ode AC switch.

Small voltage in the Gate controls the flow of large voltage at the other terminals. TRIAC'S, unlike SCRs which let the voltage in only one direction, facilitate flow of current forward and backward. You can think of TRIAC as two SCR's together, back to back.

Though the answer uses "anode" word, most descriptions actually call them "main terminals," as in Main Terminal 1 or MT1, and Main Terminal 2 or MT2.

See Wikipedia's article TRIAC

Also, see GlobalSpec site for the article Triacs Information

And, Electronics Hub site for the article TRIAC

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What is the transistor called that is fabricated as two complementary SCRs in parallel with a common gate terminal?

TRIAC.

From badwolf.j.:

TRIAC: Triode for Alternating Current

Also, called Tri-ode AC switch.

Small voltage in the Gate controls the flow of large voltage at the other terminals. TRIAC'S, unlike SCRs which let the voltage in only one direction, facilitate flow of current forward and backward. You can think of TRIAC as two SCR's together, back to back.

See Wikipedia's article TRIAC

Also, see GlobalSpec site for the article Triacs Information

And, Electronics Hub site for the article TRIAC

Last edited by markadlerdallas. Register to edit

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What are the three terminals of a TRIAC?

Gate, anode 1, and anode 2.

From badwolf.j.:

TRIAC = Triode for Alternating Current

Also, called Tri-ode AC switch.

Small voltage in the Gate controls the flow of large voltage at the other terminals. TRIAC'S, unlike SCRs which let the voltage in only one direction, facilitate flow of current forward and backward. You can think of TRIAC as two SCR's together, back to back.

Though the answer uses "anode" word, most descriptions actually call them "main terminals," as in Main Terminal 1 or MT1, and Main Terminal 2 or MT2.

However, the Electronics Notes site in the article What is TRIAC does use the "anode" as the description of the terminals.

See Wikipedia's article TRIAC

Also, see GlobalSpec site for the article Triacs Information

And, Electronics Hub site for the article TRIAC

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What circuit might contain a SCR?

A light-dimming circuit.

From mattd2414:

SCRs are mainly used in devices where the control of high power, possibly at high voltage, is needed.

The ability to switch large currents on and off makes the SCR suitable for use in medium to high-voltage AC power control applications, such as lamp dimming, regulators and motor control.

SCR: Silicon Controlled Rectifier

Extra info: SCRs provide more consistent and efficient power regulation to the output load than traditional contact switches and/or relays

he SCR's are made of silicon. They regulate power, current inversions such as converting AC to DC current, called rectification. As SCR's can work with high amperes and voltage, they are used where such a need exists, such in industrial systems.

For more information, please see the Components 101 site, for the well-illustrated article called SCR (Silicon Controlled Rectifiers) - Introduction, Working and Applications in Power Electronics

Also, see TutorialsPoint site for the concise article Silicon Controlled Rectifier

See Wikipedia's article on Silicon controlled rectifier

Last edited by markadlerdallas. Register to edit

Tags: none