hi Fran,
they both are N channel JFETS.
anyway, i replied to your email address and sent you the datasheets attachments.
many thanks,
best regards,
Bakis.
Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
[Doepfer_a100] group owner
www. parallel - worlds - music. com
www. myspace. com/ parallelworldsmusic
www. myspace. com/ interconnectedmusic
www. myspace. com/ memorygeist
www. DiN. org. uk
www. musicamaximamagnetica. com
www. vu-us. com
--- On Thu, 7/22/10, narfman96 <narfman96@...> wrote:
From: narfman96 <narfman96@...>
Subject: [vintagesynthrepair] Re: K30A-O same as K30ATM-O (to use for korg PS-3100 SG boards)?
To: vintagesynthrepair@yahoogroups.com
Date: Thursday, July 22, 2010, 2:38 PM
Bakis
They are JFET's but you are describing 2 different types. The K30ATM-O is a N channel FET and it crosses to the 2SK30ATM. If the K30A-O is a P channel FET then subbing one for the other will not work. Can you scan the page(s) of the datasheets that describe this and attach them?
Fran
--- In vintagesynthrepair@yahoogroups.com, Bakis Sirros <synth_freak_2000@...> wrote:
>
> btw, in their datasheets, says that both the K30A-O and K30ATM-O are JFET's.
>
> so, i guess, this means that both are not NPN or PNP transistors, right?
>
> am i right?
>
> thanks in advance for your help,
> Bakis.
>
>
>
> Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
>
> [Doepfer_a100] group owner
>
> www. parallel - worlds - music. com
>
> www. myspace. com/ parallelworldsmusic
>
> www. myspace. com/ interconnectedmusic
>
> www. myspace. com/ memorygeist
>
> www. DiN. org. uk
>
> www. musicamaximamagnetica. com
>
> www. vu-us. com
>
> --- On Thu, 7/22/10, Brian <brian@...> wrote:
>
> From: Brian <brian@...>
> Subject: RE: [vintagesynthrepair] K30A-O same as K30ATM-O (to use for korg PS-3100 SG boards)?
> To: vintagesynthrepair@yahoogroups.com
> Date: Thursday, July 22, 2010, 10:49 AM
>
>
>
>
>
>
>
> Â
>
>
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> Not knowing the devices you specify I cannot be certain but I
> suspect that one device is n NPN transistor and the other is a PNP. They are
> NOT interchangeable.
>
> Â
>
>
>
> Regards
>
> Brian G3OYU
>
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> Â
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>
> From: vintagesynthrepair@ yahoogroups. com
> [mailto:vintagesynt hrepair@yahoogro ups.com] On Behalf Of Bakis Sirros
>
> Sent: 21 July 2010 6:46
>
> To: vintagesynthrepair; KorgKornucopia group
>
> Subject: [vintagesynthrepair ] K30A-O same as K30ATM-O (to use for korg
> PS-3100 SG boards)?
>
>
>
>
>
> Â
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> Â
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> hi list,
>
>
>
> i have found all the needed parts for my tech to build the two SG boards
> (KLM64) for my Korg PS3100.
>
> apart from the sixty K30A-O transistors, which i will use the K30ATM-O in place
> of the K30A-O, for the two SG boards.
>
>
>
> are these two transistors basically the same?
>
>
>
> i have found the datasheets for k30A-O and k30ATM-O.
>
> they seem to have really the same specifications, apart from two parameters
> that have to do with voltage:
>
> the VGS for the K30A-O is (min to max) 0.4 to 5 volts, but for the K30ATM-O is
> -0.4 to -5 volts (they have opposite signs)
>
> the same is valid for the Vgds for the K30A-O is 50 volts, but for the k30ATM-O
> is -50 volts.(again opposite signs)
>
>
>
> but, i guess, that this is the same and has only to do with the measuring
> conditions, right?
>
> (i know almost nothing about electronic engineering, so i cannot really
> understand many parts of the datasheets.. .)
>
>
>
> any help?
>
>
>
> many thanks in advance,
>
> best regards, :-)
>
> Bakis.
>
>
>
> Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
>
> [Doepfer_a100] group owner
>
> www. parallel - worlds - music. com
>
> www. myspace. com/ parallelworldsmusic
>
> www. myspace. com/ interconnectedmusic
>
> www. myspace. com/ memorygeist
>
> www. DiN. org. uk
>
> www. musicamaximamagneti ca. com
>
> www. vu-us. com
>Message
Re: [vintagesynthrepair] Re: K30A-O same as K30ATM-O (to use for korg PS-3100 SG boards)?
2010-07-22 by Bakis Sirros