Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [high-power]

High-power refers to voltages 1) greater than 1000 Volts AC [Vᵣₘₛ, rms…root mean square] and 2) greater than 1500 Volts DC according to standard IEC 60038 of the International Electrotechnical Commission.

High-power refers to voltages greater than:

according to standard IEC 60038 of the International Electrotechnical Commission.

72 questions
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High Voltage PWM Motor Controller - Mosfets Explode

I've searched every post for an answer to this problem. I've built a motor controller circuit as shown in this diagram. I made the diagram as accurate as possible. The diodes on the mosfets were added so that the mosfet symbol would look just like…
Doctor Circuit
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Controlling high current (1000A) with MOSFETs

I am currently designing a capacitive discharge spot welder and am running into the issue of switching. I plan to use a few super capacitors in series to discharge around 1000A in a very short period of time (most likely less than 100…
LetterSized
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Looking for ideas to about cooling multiple MOSFETs in TO-247 packages

I am designing a device based on TO-247 MOSFETs. The power is pretty high - about 50W per package, so it's going to be either water-cooling or something big with fins and fan. All is great, except they have the drain connected to the thermal pad. So…
TQQQ
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How does this circuit in an electric mosquito swatter work?

I had an electric mosquito swatter lying around so I decided to open it up and check out how it works. I understood some parts of the circuit however I did not clearly understand how the rest of it works. I have posted the circuit of the mosquito…
Seb
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Identification of a part on a power line's lightning arrester

I recently spotted an arrangement of wires on a lightning arrester on top of a power line. The power line is IIRC a 110 kV, 16.7 Hz, two phase line for railway systems. The lightning arrester is of a linear type on top of the power line…
Ariser
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what role does transmission line termination take in long distance power lines?

Does transmission line theory and transmission line termination take any significance when dealing with long high-voltage power lines? Do power companies terminate their power lines to avoid reflections in their power lines over great distances?…
Joaquin Brandan
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How to efficiently power and arrange 100 multi chip LEDs in 6 different colors each color runnig off their own transistors

First time on here hope I have given sufficient information. I am trying to power 100x 5W high power multi chip LEDs and 8x 3W high power LEDs. I would like to do so off of 120v Ac house plug. The thing is that there is 6 colors and each color group…
Lucky hex
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Component for switching 1000V - 100Amps condenser discharge pulse

I am miniaturizing a circuit used to generate a pulse using condensers into an inductive load. I am a little lost on what would be the best type of component to choose to start the discharge (ie. a switch closing the circuit and allowing the…
user119911
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What is the name of this HV test measuring setup?

There is a measuring setup similar to the following photo in our laboratory which belongs to PASSON VILLA company. What is the engineering name of this device and how can I find a catalog or something? Because as far as I know, this company has been…
WeTech
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When is a 5mm thick PCB a better choice than solid bus bars?

I have in my possession a 5mm thick printed circuit board. It comes from a 2000-era Sun Blade server, where it connected 4 redundant 70A power supplies. I also have a need to assemble some high current electronics - carrying currents of 140A or…
mjt
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How is current controlled in high power applications?

When working with electronics, it is quite easy to regulate current with a resistor, potentiometer, switcher, etc. But take a simple high power application such as an electric stove. What method is used to control the current through the burners.…
user5108_Dan
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Power switch 12 KV

I want to control a load which is working with 12000VDC (with low current about uA). Is there any kind of MOSFET or switch (not mechanical actually) for that to turn it on or off? Is that possible at all? EDIT: I want to switch it on to charge the…
Mehrdad Kamelzadeh
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How do I implement precharge for a 24 V, 1 kW inverter?

In this circuit here I tried making a pre-charge circuit to start up a 24 V, 1 kW inverter which would draw 40 A of power so is this circuit good? Why keeping the MOSFET in the linear region is not a good idea? Here is the graph I do need to start…
Hazardous Voltage
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Which layer should I use for high power signals in a four layers PCB?

I am designing an SMD PCB to control two motors that consume 6 amperes each. I have too many components and I am using 4 layers, but it is very disorganized, so I want to separate the tracks. I want to know how to separate those tracks, and in which…
Raul Rodriguez
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What is the name of this huge high-power test equipment?

It seems very old, maybe more than 50 years, and it doesn't have an information plate.
WeTech
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