palchiu
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Posts posted by palchiu
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I need to find a way to keep ants away from my gears. Do you guys have any suggestion?
Your amp is sounds sweet.
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Hi Tran
Extra shipment sent.
Thanks!
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Thanks Tran!
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Making progress...
...Parts will be in on Monday
The board's color also caught my eyes.
Well done! Thanks Kerry!
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Finally received my power transformer, I can keep working on.
It's [email protected] x2 and 16V@1A x2 , order from a local PT factory.
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Congrats the problem solved!
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So...
Add two wires from input and pot to star ground?
Hope this can solve.
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NO. The 270 volt zener is to protect the 400v pnp transistor. if that is the one you are using.
you can leave it in circuit for the 600v transistor. you short it out for the simpler version of the power supply.
Doc, many thanks!
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Got the heat sinks in today. Here's how it's going to lay out...
Just wonder if Kerry may make them tighter, and put them in chassis like densen's amp will looking cool .
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You need to jumper the 270V zeners, not just leave them out. The Vishay 0 ohm "resistors" are good for this. Wire also works but insulation would be nice.
spritzer, thanks for your comments.
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If you are using the 2sa1486, then no 270v zeners.
Thank you!
Pal
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You need to use 270v zener if opting for the ksc and ksa.
Also, total of diode strings is 500v for 450vdc and 550v for 500vdc output.
Dear Tran,
Need remove 270V zener if with 2SA1486/2SC3840?
Thanks!
Pal
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Just curious, has anyone put together a BOM for the KGSSHV mini PSU?
Tran told: ksc5026 and ksa1156, instead of the 2sc3840 and 2sa1486.
There's more parts need for mini PSU. 2x 2K resistor, 2x 270V zener, 2x 24V zener. (You may check schematic and pcb, Dr.Gilmore has posted them.)
+/- 15V capacitors size has been changed. 2x 3300uF and 2x 330uF, dimeter/pitch are 16mm/7.5mm and 10mm/3.5mm. 78/7915 don't need heatsink.
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Dear Tran,
Appreciated for the GB, I've check mine is correct.
May you add one column, if checking is ok then can note "Correct" or "Checked" in cell and let you know it's has been checked by self.
Thank you very much!
Best
Pal
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Tran, thanks for the GB!
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Mouser
Resistor/Qty
220R/8 71-CMF60221R00FHEK
500R/2 71-CMF60499R00FHEK
2K2/4 71-CMF602K2100FHEK
3K3/4 71-CMF603K3000FHBF
5K1/4 71-CMF605K1100FHEK
10K/6 71-CMF6010K000FHEK
100K/4 71-CMF60100K00FHEK
150K/4 71-CMF60150K00FHEK
250K/4 71-CMF60249K00FKEB70
330K/4 71-CMF60332K00BEBF
470K/4 71-CMF60470K00FHEK
680K/4 273-680K-RC
1M/4 71-CMF601M0000FHEK
1K5/8 71-CPF3-B-1.5K
21K/1
Capacitor
0.1uF/630V/9 505-MKP4-0.1/630/5
0.22uF/630V/4 505-M10.22/630/5
0.22uF/1000V/4 505-M10.22/1KV/10
220uF/100V/4 667-EEU-FC2A221
0.47uF/50V/2 80-C330C474J5R
Transistor
2SA1968/4
2SC1815/2
Zener
12V/4 78-BZX85B12-TAP
100V/3 78-BZX85B100-TAP
LED/4 859-LTL-4213
Tube
12AU7/2
12AX7/2
6CA7/8
I've done that before, will anyone check?
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Satodenki stuff is good. I got a boatload of stuff recently from them and they are all perfect.
Sato is nice, my friend helped me got some parts from them.
I've found another keisei-net co jp , they provide oversea shipping.
But I didn't buy from them. Can check stock online.
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Congrats!
Another KGSSHV is born.
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GeorgeP, Congrats! It's great amp!
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Hi Tran,
Thanks for your explain, now is clear questions to input numbers in spreadsheet.
Thank you very much!
Pal
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Hi Tran,
Questions about notes in spreadsheet.
Squarewave = KSA5 PSU + Amp Is that means "One set" include 1 x PSU and 2 x amp PCB?
Dynahi onboard = 2x New amp board ONLY. No PSU. "One set" include 2 x amp PCB for balanced setting?
Thanks!
Pal
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introducing the ....
KNOB OF BIRGIR
Like this wood knob!
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I don't think the BH will ever be released to public.
But the Megatron is very tempting indeed.... Other boards I'd love to try or prototype are the onboard Dynahi, KSA5 and Dynalo.Mini KGSSHV and Megatron
Thanks everyone effected these great amps!
The ultimate DIY? A Stax SRM-T2!
in Do It Yourself
Posted
I got my peek screw from this company http://www.linkupon.com/E/D-f.html
M3x15 50pcs cost around USD$20