Hello Everybody.
Assuming advancements in silicon technology, and various new semiconductors that are being offered today, are there any interesting alternatives for output power transistors, if you were to building the First Watt F5 V2 device?
Cheers,
Ziggy.
Assuming advancements in silicon technology, and various new semiconductors that are being offered today, are there any interesting alternatives for output power transistors, if you were to building the First Watt F5 V2 device?
Cheers,
Ziggy.
I was thinking of having a play with some regulators to drive pucks (IXKN40N60C IXTN40P50P), I haven't seen it done before (someone must have) my remaining half dead brain cell can't figure out if its a stupid idea 😀
Yes, I know it's missing vital bias presets on the regulator inputs.
Yes, I know it's missing vital bias presets on the regulator inputs.
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Brain fog is clearing, yes, it's a stupid idea, there's no way of setting the bias.
If we had a stupid idea corner, I'd be a winner every time 😀
Great question! 🙂
Hopefully, there are - and some knowledgable person will be able to identify them.
Andy
You tell me! 😀
How does one establish whether it is a suitable alternative - or not?
Andy
I don't really know. That is why I am asking / guessing ...
Low gate-source Capacitance?
Low Reverse Transfer Capacitance?
Low power losses?
High current capability?
Low Rds ON?
Low R_thermal_junction_to_case?
No need for heat sink?
Specifically, my question is targeting at Silicon Carbide and/or Gallium Nitride
{...Traditional silicon has been around for quite some time now}.
Are there any characteristics of SiC or GaN technologies, that could come in handy whilst building an F5?
Next question: in the absence of the "complement" device within a given technology, would it be possible to construct the F5 based on a "quasi-complement" pair, using two of the SAME polarity devices, like they did in the 1970's, when PNP power transistors were scarce and hard to match?
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Hot(*), or Not?
https://pl.mouser.com/datasheet/2/692/GS61004B-DS-Rev-180213-1314179.pdf
(*)Both in the Social_media/FB, as in the Celsius/Kelvin temperature meaning of the word
https://pl.mouser.com/datasheet/2/692/GS61004B-DS-Rev-180213-1314179.pdf
(*)Both in the Social_media/FB, as in the Celsius/Kelvin temperature meaning of the word
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Progress on my F5T v3 balanced mono blocks. I have some metal work to add to the front panel above and below the VU meters and more drilling to do. The top and bottom panels need cooling holes yet.
The back panel has both input boards and the speaker protection board mounted on it. The second RC filter PC board needs a mounting platform to raise the board between the amp boards, about 6" tall. Considering all the holes I've been drilling, small welding job will be a welcome relief.
I still need VU meter drivers, I want to use drivers which use the amplifier output, not the input.
The back panel has both input boards and the speaker protection board mounted on it. The second RC filter PC board needs a mounting platform to raise the board between the amp boards, about 6" tall. Considering all the holes I've been drilling, small welding job will be a welcome relief.
I still need VU meter drivers, I want to use drivers which use the amplifier output, not the input.
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Those are the valve covers on the "wall of dead" engines. I thought about using the 308 and the Maserati 4AC twin turbo as they are close to the same physical size. Someday..
Hello guys/ladies. I'm building a 2 channel F5T V2 with the V# boards. I've been sourcing parts and have a quick question for you...
Both the FQA12P20 and N20 are now obsolete, I search the forum and found several people who have used other packages.
Would these be suitable? Some of the values on the Datasheet look good others, are what brought me here to ask those with more knowledge.
Q3-4 IRFP9240PBF
Q5-6 IRFP240PBF
Thanks guys, I do appreciate your time.
JT
Both the FQA12P20 and N20 are now obsolete, I search the forum and found several people who have used other packages.
Would these be suitable? Some of the values on the Datasheet look good others, are what brought me here to ask those with more knowledge.
Q3-4 IRFP9240PBF
Q5-6 IRFP240PBF
Thanks guys, I do appreciate your time.
JT
Do Fets Q3-4 5-6 need to be matched pairs N-N and P-P?
I got all the parts in today and I'm getting ready to build!! 🙂
I got all the parts in today and I'm getting ready to build!! 🙂