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Questions tagged [power-electronics]

Refers to the conversion of electric power by using solid state components such as semiconductors. Can also generally apply to the field of electrical engineering which works with power electronics.

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3answers
4k views

Voltage divider Biasing of transistor

In this amplifier circuit we are using a voltage divider bias. Why can we consider that voltage produced by R2 is actually providing voltage to the base. What is R1 doing?
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1answer
578 views

High power pulse generator

I'm designing a relatively high power pulse generator. Basically I have a microcontroller generating a clean square wave (0-3.3 V or 0-5 V) which then goes into my amplification circuitry. I want to ...
5
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2answers
21k views

Role Of Emitter (By Pass) Capacitor

What is the importance of Bypass capacitor of Common-emitter amplifier? Will the gain be reduced when it is removed?
5
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4answers
19k views

Arduino 230v Light bulb dimming

Hey guys i have done a lot of research and testing on different circuits for 230v(50hz) or 220v light dimming, but i cant get my arduino to dim my light. This is the last thing i tried. made this ...
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2answers
217 views

What happens to the circuit Voltage, Energy?

I was recently asked this question to calculate the voltage across a capacitor. The problem is described as follows :- Consider a capacitor "C" connected across a voltage source "V". Once the ...
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1answer
4k views

What is the use of an LCL Filter?

Can someone explain what is the use of an LCL filter and where is it used? I searched for it online but couldn't find any materials.
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1answer
160 views

Selecting a suitable mosfet for Linear Technology LTC4412HV

I would like to choose a suitable P-MOSFET for power switching with the Linear Technology LTC4412HV. This IC is just an ORing for two power supplies to select the best between two batteries. The ...
1
vote
1answer
88 views

Designing Power on failure system

I came a cross a design problem which I need your suggestions in it. I have 3 power sources, Main Supply which is 9-32DC, a battery pack 12VDC, and PoE Module, all are connecte to tripel output 12, 3....
9
votes
7answers
663 views

Software suggestions for electronic simulations?

I am a beginner in EE engineering and want to use a software where I can analyze signals or even motor speeds, power electronics ect. But the Spice programs looks so boring and detailed for me. Maybe ...
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0answers
270 views

power supply frequency response

I have a question regarding the frequency response of a boost converter. I am curious to know what causes the "blip" at around 8kHz that causes the response to go up and then back down. At first, I ...
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1answer
223 views

Power Grid in depth explanation [closed]

I am looking for links, books, papers, documents or any other reference type that allows me to get a very in depth overview of the power transmission and distribution network (preferably of the UK). ...
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3answers
4k views

BJT biasing and operating points

What exactly is the definition of an operating point in the context of Bipolar junction transistors. What is their physical significance? I was going through few books on electronics and found that a ...
6
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5answers
1k views

The path of electrons in AC circuit?

I have a question regarding the AC circuit shown below. If we ignore the voltage drop caused by the long cable, I think the device will work and the circuit can be considered as a closed circuit. Now ...
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1answer
3k views

TEG in series require power balancer/align adapter?

Do Thermoelectric Generators (TEG) in series require a power balancer, when storing the energy to a battery source? If not, what should I do for my design to distribute to a battery source more ...
0
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1answer
85 views

generic term for inductors/capacitors/transformers for power-handling applications

Can anyone think of a generic term to cover capacitors and magnetics for power-handling applications? (is there one?) I want to distinguish from power semiconductors and signal-level capacitors/...