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.
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Heat-Sink-Connection LED: NVSL219CT
I am currently planning my new PCB with 2 LEDs (NVSL219CT). I would operate the LEDs with 1.5A. What I could not find in the datasheet: Is it allowed to connect the HeatSink to the ground plane?
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What is the best way to convert 3ph 380VAC to 3ph 0V >> 450VAC in range of 800 kW?
I have a company that makes servo AC voltage regulators and some other transformer-based products, and today some of my customers asked me to give him a quotation for an 800 kW Variac, the biggest one ...
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Voltage/Current ratings for dual SCR modules
I'm working with a different kind of package of SCR than what I'm used to, where there are two SCR's in one package. So the Datasheet for this SCR-module only has one rating for voltage and current, ...
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High power, wideband balun transformer
I wish to design a 'somewhat'(ill-defined; i take what i can get) compact balun connected from a coax cable to a custom design dipole antenna. The design of the antenna is wideband in the sub 1 GHz ...
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Modding a $30 fog machine, driving high power LEDs?
I've recently acquired a $30 fog machine off Amazon that features, next to the obvious fogger, eight high power RGB LEDs, controlled in series via a RF remote. The LEDs are very bright so I assumed ...
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Why do we need admittance, susceptance and conductance?
What is the need for modelling circuits and transmission lines, and loads using variables stated above when we can use resistance in the real domain and reactance in the imaginary domain. Are not the ...
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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 ...
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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 ...
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Making a MOSFET-based constant 14 VDC input to constant 11 VDC (8-20 A) output voltage regulator circuit
I have a constant 14 VDC source and I want to get a constant regulated output of 11 VDC regardless of the load current, knowing that the load is varing from 8 to 20 A with low frequency. What is the ...
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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 ...
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How do I measure impedance at high power?
I need to measure the impedance of a passive device at its operating power, about 100-watts, and its operating frequency, from 0.1-MHz to 10-MHz. The venerable "operating impedance bridge" ...
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3 W Power LED without heatsink (350 mA)
Can I use this Prolight Opto PK2N LED at 350 mA without a heatsink?
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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?...
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Using High Power Relays to Actuate an AC Motor
I want to remove the need for contactors in a motor application. Currently we are using a 1.5HP (1.1KW) motor and actuating it via a contactor.
I have a PCB I am designing and want to use the ...
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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.
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