The chassis I am working on is the 3U 400mm deep chassis. You can probably use the 300mm chassis to cut the heatsink tapping cost (because the 300mm chassis have the sink in one piece) and place the transformer and switches in a separate box for better noise rejection.

Those three boards are the power supply stack for the arduino and 12V relays, arduino board for controlling the attenuator boards, and a solid state relay for power switching. I'm planning on using the KG attenuator in this build, and I'd like to control the power switching with the arduino that controls the attenuator boards as well.

Tracking is now available at the USPS site for CP8660092289VN:

https://tools.usps.com/go/TrackConfirmAction_input?qtc_tLabels1=CP860092289VN&qtc_senddate1=&qtc_zipcode1=

My boards arrived.

Thanks Lil Knight !!

Cool

Package to Deepak seems to be affected by the hurricane... Got stuck in NY for the last 5 or 6 days already Hopefully he won't receive a soaking wet box.

Edited September 3, 201114 yr by Lil Knight

Lil Knight,

At the end, if you still have a dynaFET set and two PSU boards available, I would be more than happy to purchase them.

Absolutely no hurry and I completely understand if they have all been committed. I am way late to the game!

Thanks

-- jk --

Jake,

I have 1 last Dynafet set left. A set = 2 amp boards + 2 PSU boards. Is that what you want? Or you need a set and 2 extra PSU boards.

I would like one set as you stated it (2 amp boards + 2 PSU boards).

I am open to multiple payment options (direct bank-issued check? MO?) if you want to avoid the whole paypal debacle. Just let me know.

Cool

Package to Deepak seems to be affected by the hurricane... Got stuck in NY for the last 5 or 6 days already Hopefully he won't receive a soaking wet box.

I wasn't home this morning to sign for the package so they left me a slip saying I have to pick it up at the post office on Tuesday. I'll get the non-T2 people out quickly, but I want to make sure the envelopes I'm ordering for T2 people will fit the boards so they'll take a little while longer.

schematics for the dynamic boards. I think these are the ones that match the boards.

http://gilmore.chem....fetschembal.pdf

http://gilmore.chem....ipowerschem.pdf

http://gilmore.chem.northwestern.edu/dynahiver2a.pdf

Edited September 4, 201114 yr by kevin gilmore

Not sure what the tracking number for my boards reveals - CP86 0093 942V N - USPS says "Notice Left" in Bow, New Hampshire. I live in Chicago ..... I guess this tracking is for a shipment of many board to Bow, New Hampshire where someone will split them up and ship them individually?

I see on the spreadsheet that quite a few buyers have Tracking # CP86 0093 942V N, so it must be a mass shipment to be divided up and re-shipped....?

Not sure what the tracking number for my boards reveals - CP86 0093 942V N - USPS says "Notice Left" in Bow, New Hampshire. I live in Chicago ..... I guess this tracking is for a shipment of many board to Bow, New Hampshire where someone will split them up and ship them individually?

I see on the spreadsheet that quite a few buyers have Tracking # CP86 0093 942V N, so it must be a mass shipment to be divided up and re-shipped....?

Yes you even acknowledged my post about this in and replied to my PM asking for your zip code

Just got my boards. It's a bit startling just how much smaller the Exstata V2 amp boards are compared to the KGSSHV given that they were once identical...

Not sure what the tracking number for my boards reveals - CP86 0093 942V N - USPS says "Notice Left" in Bow, New Hampshire. I live in Chicago ..... I guess this tracking is for a shipment of many board to Bow, New Hampshire where someone will split them up and ship them individually?

I see on the spreadsheet that quite a few buyers have Tracking # CP86 0093 942V N, so it must be a mass shipment to be divided up and re-shipped....?

Ha! Speechless? NOT!

Having a "senior moment"? Or maybe chomping at the bit to build the first non KG bestowed DIY T2, are ya?

Ok, I got a good laugh out of deepak's reply, going back to listening to Pink Floyd's "Marooned" on my KGSSHV. Love it!

Edited September 5, 201114 yr by livewire

PCBs arrived today!!!!

Many thanks Tran

-- o --

Rodrigo

WARNING TO ALL...

http://gilmore.chem.northwestern.edu/dsc_2288.jpg

The one on the left is real, the one on the right is fake, and breaks down at 200 volts.

birgir and i got nailed on this, about half of the ones i bought were fake, and most of

birgir's (if not all of them) are fake.

Evidently there are also 2sa1486 fakes out there, i don't have any pictures of the

fakes.

Get yourself one of these

http://www.ebay.com/itm/DY294-Transistor-Semiconductor-Parameter-Tester-Meter-/120755611246?pt=LH_DefaultDomain_0&hash=item1c1d98666e

and test all the high voltage transistors before you put them in.

This includes the T2 !

Yes you even acknowledged my post about this in and replied to my PM asking for your zip code

lol, I chuckled.

WARNING TO ALL...

http://gilmore.chem....du/dsc_2288.jpg

The one on the left is real, the one on the right is fake, and breaks down at 200 volts.

birgir and i got nailed on this, about half of the ones i bought were fake, and most of

birgir's (if not all of them) are fake.

Evidently there are also 2sa1486 fakes out there, i don't have any pictures of the

fakes.

Get yourself one of these

http://www.ebay.com/...=item1c1d98666e

and test all the high voltage transistors before you put them in.

This includes the T2 !

It would sure be nice if the counterfeiter's we be nice enough to make parts that least came close to the specs...

That would entail too much work.

Basically they take inferior, lower voltage rated off the shelf transistors and relabel them.

They prolly pay 20 cents a piece for them, then they mark em up to five dollars. Instant goldmine.

Edited September 6, 201114 yr by livewire

WARNING TO ALL...

http://gilmore.chem....du/dsc_2288.jpg

The one on the left is real, the one on the right is fake, and breaks down at 200 volts.

birgir and i got nailed on this, about half of the ones i bought were fake, and most of

birgir's (if not all of them) are fake.

Evidently there are also 2sa1486 fakes out there, i don't have any pictures of the

fakes.

Get yourself one of these

http://www.ebay.com/...=item1c1d98666e

and test all the high voltage transistors before you put them in.

This includes the T2 !

I posted this also in the T2 thread:

Sorry to hear this guys.

To clarify, the 2SA1968 sand is used in the early Blue Hawaii, and the KGSSHV, but not in the DIY T2.

Also the 2SA1968 sand in the KGSSHV amp can be supplanted

by using ixtp01n100d sand as the current source instead.

By all means buy the tester! I just got my sandmeter on order. Thanks KG!

WARNING TO ALL...

http://gilmore.chem....du/dsc_2288.jpg

The one on the left is real, the one on the right is fake, and breaks down at 200 volts.

birgir and i got nailed on this, about half of the ones i bought were fake, and most of

birgir's (if not all of them) are fake.

Evidently there are also 2sa1486 fakes out there, i don't have any pictures of the

fakes.

Get yourself one of these

http://www.ebay.com/...=item1c1d98666e

and test all the high voltage transistors before you put them in.

This includes the T2 !

This DY294 is a good and cheap option to verify these components, I've bought one for me.

Many thanks for your warning.

-- o --

Rodrigo

Yes you even acknowledged my post about this in and replied to my PM asking for your zip code

Right, and at first I thought the tracking number was the shipment FROM you. But I see now it was the tracking number TO you. Just trying to follow what is going on as this thread jumps around.

lol, I chuckled.

You know guys I am involved in dozens of projects, committees, boards, run 3 businesses.... it isn't like reading head-case and keeping all this straight is all I've got to think about.

Also the 2SA1968 sand in the KGSSHV amp can be supplanted by using ixtp01n100d sand as the current source instead

Yes, it's a good choice, but I live in Spain and I can't buy in Mouser this component because they don't sell these references to the non-US buyers :(, I think that there are several users in this forum with the same problem

We could do a group buy of these ixtp01n100d, I could distribute to all the users out of US these components if someone in US buys them for us.

-- o --

Rodrigo

Future Electronics will sell it to you.

I had the same problem living in AU.

Edit: I can't seem to find them there though... that's strange I could have sworn I saw them?

Edited September 6, 201114 yr by nattonrice

Future Electronics will sell it to you.

I had the same problem living in AU.

.

Did you buy any from them?