Electronics > Beginners
Multiple LL N-Channel MOSFET's in Series
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T3sl4co1l:
What voltage, speed?

Tim
TheDood:

--- Quote from: T3sl4co1l on August 04, 2019, 11:50:37 am ---What voltage, speed?

Tim

--- End quote ---
Was thinking single shottky for half wave rectification and a cap in parallel across comparator so that it had charge to output when supply V was 0. So I guess up to 120V? Also not sure on speed, 20kHz?

I've some lm358s and was looking at the lm339 for true comparator but both opamps have lower supply V's than I was expecting. Trying to get acquainted with a few different "goto" generic choices with maybe some higher V supply maxes
T3sl4co1l:
What?

What, exactly, overall, are you doing?  This appears to go well beyond single MOSFETs and comparators...

Tim
TheDood:

--- Quote from: T3sl4co1l on August 05, 2019, 01:11:22 am ---What?

What, exactly, overall, are you doing?  This appears to go well beyond single MOSFETs and comparators...

Tim

--- End quote ---
I'm just tinkering trying to develop an understanding so that I can build XYZ in the future. When I say "Trying to get acquainted with a few different "goto" generic choices with maybe some higher V supply maxes," that is exactly what I'm after. I'm really big into effeciency and just starting out into electronics so looking for parts that are currently used (ie the IRF640N is outdated) that offer lower power dissipation than what I've been exposed to. Idk brands or who to buy from or anything, so just trying to learn.

I'd like to make a variable CC/CV PS (what I had in mind when talking about the cap in parallel) that I can use for my bench, and also interested in audio amplification. I'd like to design a drone at some point and effeciency would be very important to me then as well. All projects seem like comparators would be nessecary, the higher voltage comparator more so in the PS, but I'm not even sure how accurate that is lol. I'd like to increase my comprehension so that I can modify cheap projectors to increase lumen count, make effecienct small wattage AC/DC PS's (95%+), create a drone + receiver, ec, just typical nerd stuff haha
BrianHG:
Ok, 2-3$us in qty 10 parts:

0.015ohm 200v
https://www.digikey.com/product-detail/en/vishay-siliconix/SQP90142E_GE3/SQP90142E_GE3-ND/7326318

0.024ohm 200v
https://www.digikey.com/product-detail/en/infineon-technologies/IRFB4227PBF/IRFB4227PBF-ND/1928083

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