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How microcontrollers are programmed?

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In saturation region BJT act as a switch.
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BJT act as switch in saturation and  cutoff region ( ON state in saturation region and OFF state in cut-off region )

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2 answers 19 views

A bipolar junction transistor (BJT) is used as a power control switch by biasing it in the cut-off region (OFF state) or in the saturation region (ON state). In the ON state, for the BJT  (A) both the base-emitter and base-collector junctions are reverse biased (B) the base-emitter junction is reverse ... (C) the base-emitter junction is forward biased, and the base-collector junction is reverse biased (D) both the base-emitter and base-collector junctions are forward biased

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The device which allows reverse power flow and withstands highest switch frequency is (A) GTO (B) MOSFET (C) IGBT (D) Inverter grade SCR

asked Apr 28, 2018 in Power Electronics by Shimroz123
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Which phenomenon is present in thyristors but absent in BJT, MOSFET and IGBT ? (A) forward conduction (B) latching (C) forward blocking (D) reverse breakdown

asked Apr 28, 2018 in Power Electronics by Shimroz123
1 answer 51 views
1 answer 43 views

An FET is a better chopper than a BJT because it has (A) lower offset voltage (B) higher series ON resistance (C) lower input current (D) higher input impedance

asked Apr 26, 2018 in Electronics Engineering by Shimroz123
2 answers 596 views

What is a BJT?

asked Mar 10, 2018 in Electronics Engineering by Quiz
0 answers 21 views

How can BJT be used as an amplifier?

asked Mar 19, 2018 in Bipolar Junction Transistor by Zeeshan
1 answer 11 views

A switch tail ring counter is made by using a single D-FF. The resulting circuit is (A) T-FF (B) D-FF (C) SR-FF (D) JK-FF

asked Apr 28, 2018 in Digital Electronics by Shimroz123
1 answer 17 views

A closed switch has a resistance of?

asked Mar 25, 2018 in Basic concepts by Shimroz123
2 answers 90 views
1 answer 45 views

What is the difference between a switch and a relay?

asked Dec 17, 2017 in Switchgear And Protection by Quiz
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Transfer switch

asked Jul 6 in Wikipedia by Shimroz123
1 answer 29 views

How rating of main switch and cable is selected for Industrial Installation.

asked Sep 20, 2018 in Industry Electrical Systems-I by Shimroz123
1 answer 26 views

Earthing switch is used for?  (A) Measuring of safety voltage (B) Protection of equipment from ground faults (C) Discharging residual energies (D) All of the above 

asked May 8, 2018 in Switchgear And Protection by Shimroz123
1 answer 16 views
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What are the desirable characteristics of ideal switch?

asked Feb 5, 2018 in Unit 1 by Quiz
1 answer 1,001 views

Explain the formation of parasitic BJT and parasitic diode in Power MOSFET. Can parasitic diode be used in same power electronics applications?

asked Feb 6, 2018 in Unit 1 by Quiz
1 answer 25 views

What is the value of Beta in power BJT?

asked Sep 20, 2017 in Electrical Engineering by Quiz
1 answer 61 views

Explain the on state losses in power BJT.

asked Sep 15, 2017 in Unit 1 by Quiz
1 answer 78 views

 If the base current of a BJT is 250 µA and emitter current is 15 mA, then the common base current gain will be A) 0.98 B) 0.41 C) 59 D) 55  

asked Jun 18, 2018 in Bipolar Junction Transistor by Shimroz123
0 answers 31 views

What is a BJT amplifier?

asked Mar 19, 2018 in Bipolar Junction Transistor by Zeeshan
1 answer 4 views

List configurations of BJT. 

asked Jul 10 in Elements of Electronics by Shimroz123
1 answer 21 views

State the need of biasing of BJT.

asked Sep 5, 2018 by Zeeshan
1 answer 32 views

Draw circuit diagram of voltage divider biasing list two advantages of voltage divider biasing of BJT.

asked Sep 5, 2018 by Shimroz123
1 answer 10 views

Compare BJT with FET

asked Sep 5, 2018 by Shimroz123

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