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SEN / CEN All JFET IV Converter Evaluation Pack

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#21
necplusultra__1 Kit__2 matched pairs__60€
Murdoc__1 Kit__2 matched pairs__60€
maravedis__1 Kit__2 matched pairs__60€
Nikon1975__1 Kit__2 matched pairs__60€
pchw__1 Kit__2 matched pairs__60€
ernesternest__1 Kit__2 matched pairs__60€
heinz1__1 Kit__2 matched pairs__60€
vitalica__1 Kit__2 matched pairs__60€
mravinsky__1 Kit__2 matched pairs__60€
samoloko__1 kit__2 matched pairs__60 euro
BDL__1 Kit__2 matched pairs__60€
ujamerstand__1 Kit__0 matched pairs__50€

Thank you.
 
#22
12 kits and 22 pairs JFETs so far.
Maybe the circuit is too difficult to understand, or too simple to need a PCB. 😉

For your support, we shall still run the batch even if we do not reach 60 kits.
The addition production costs we shall absorb, but we shall not run a second batch afterwards.

Let's give it a week or so.
I shall announce upfront so that you might have time to order additional kits, if you so wish.


Patrick
 
#25
necplusultra__1 Kit__2 matched pairs__60€
Murdoc__1 Kit__2 matched pairs__60€
maravedis__1 Kit__2 matched pairs__60€
Nikon1975__1 Kit__2 matched pairs__60€
pchw__1 Kit__2 matched pairs__60€
ernesternest__1 Kit__2 matched pairs__60€
heinz1__1 Kit__2 matched pairs__60€
vitalica__1 Kit__2 matched pairs__60€
mravinsky__1 Kit__2 matched pairs__60€
samoloko__1 kit__2 matched pairs__60 euro
BDL__1 Kit__2 matched pairs__60€
ujamerstand__1 Kit__0 matched pairs__50€
ystkkmkr__1 Kit__2 matched pairs__60€

Thank you.
 
#28
I'm intending to test all sen/cen with an 8 output Buffalo III. When I have some spare brain space I hope I will work out how to bias the 1.6v offset from your instructions...
But, just a thought, if you want to have a bigger GB you could post the exact details of how to do this - If you did, I'd expect many more Buffalo owners to be interested.

Maravedis
 
#29
necplusultra__1 Kit__2 matched pairs__60€
Murdoc__1 Kit__2 matched pairs__60€
maravedis__1 Kit__2 matched pairs__60€
Nikon1975__1 Kit__2 matched pairs__60€
pchw__1 Kit__2 matched pairs__60€
ernesternest__1 Kit__2 matched pairs__60€
heinz1__1 Kit__2 matched pairs__60€
vitalica__1 Kit__2 matched pairs__60€
mravinsky__1 Kit__2 matched pairs__60€
samoloko__1 kit__2 matched pairs__60 euro
BDL__1 Kit__2 matched pairs__60€
ujamerstand__1 Kit__0 matched pairs__50€
ystkkmkr__1 Kit__2 matched pairs__60€
prooptiki__1 Kit__0 matched pairs__50€

Thank you.
 
#30
I have just posted a schematics of the SEN and how to provide the bias DC current.

http://www.diyaudio.com/forums/digi...-minimalistic-iv-converter-4.html#post2713570

Nelson Pass also gave hints on how to cope with an DC voltage offset in his Zen IV thread.

http://www.diyaudio.com/forums/pass-labs/173291-zen-i-v-converter-7.html#post2681859

I do have the datasheet for the ES9018 under Non Disclosure Agreement.
So I should not discuss the details in the datasheet, except to know that it is not too different to PCM1798 in principle.

I know nothing about the Buffalo iii, nor do I intend to know.
If you (in general and not anyone in particular) want guaranteed results, you should buy the complete package from one supplier.
He then has the obligation to provide a working solution.

I do not do this for commercial reasons, so I am not interested in a large sale.
I am interested in getting people to understand and appreciate simple circuits.
And I enjoy the sort of exchange I had with Calvin & Joachim Gerhard over at the main thread.

If you are looking for a turn-key solution, I am afraid this might probably not be the right one for you.


Patrick

.
 
Last edited:
#31
necplusultra__1 Kit__2 matched pairs__60€
Murdoc__1 Kit__2 matched pairs__60€
maravedis__1 Kit__2 matched pairs__60€
Nikon1975__1 Kit__2 matched pairs__60€
pchw__1 Kit__2 matched pairs__60€
ernesternest__1 Kit__2 matched pairs__60€
heinz1__1 Kit__2 matched pairs__60€
vitalica__1 Kit__2 matched pairs__60€
mravinsky__1 Kit__2 matched pairs__60€
samoloko__1 kit__2 matched pairs__60 euro
BDL__1 Kit__2 matched pairs__60€
ujamerstand__1 Kit__0 matched pairs__50€
ystkkmkr__1 Kit__2 matched pairs__60€
prooptiki__1 Kit__0 matched pairs__50€
NicMac__1 Kit__2 matched pairs__60€

Thank you
 
#33
necplusultra__1 Kit__2 matched pairs__60€
Murdoc__1 Kit__2 matched pairs__60€
maravedis__1 Kit__2 matched pairs__60€
Nikon1975__1 Kit__2 matched pairs__60€
pchw__1 Kit__2 matched pairs__60€
ernesternest__1 Kit__2 matched pairs__60€
heinz1__1 Kit__2 matched pairs__60€
vitalica__1 Kit__2 matched pairs__60€
mravinsky__1 Kit__2 matched pairs__60€
samoloko__1 kit__2 matched pairs__60 euro
BDL__1 Kit__2 matched pairs__60€
ujamerstand__1 Kit__0 matched pairs__50€
ystkkmkr__1 Kit__2 matched pairs__60€
prooptiki__1 Kit__0 matched pairs__50€
NicMac__1 Kit__2 matched pairs__60€
qusp__1 kit__0 matched pairs__50€

thanks Patrick, actually what idss range is preferred for these boards? i'll just make sure i have it covered, pretty sure i will though as i have a good spread.
 
#36
necplusultra__1 Kit__2 matched pairs__60€
Murdoc__1 Kit__2 matched pairs__60€
maravedis__1 Kit__2 matched pairs__60€
Nikon1975__1 Kit__2 matched pairs__60€
pchw__1 Kit__2 matched pairs__60€
ernesternest__1 Kit__2 matched pairs__60€
heinz1__1 Kit__2 matched pairs__60€
vitalica__1 Kit__2 matched pairs__60€
mravinsky__1 Kit__2 matched pairs__60€
samoloko__1 kit__2 matched pairs__60 euro
BDL__1 Kit__2 matched pairs__60€
ujamerstand__1 Kit__0 matched pairs__50€
ystkkmkr__1 Kit__2 matched pairs__60€
prooptiki__1 Kit__0 matched pairs__50€
NicMac__1 Kit__2 matched pairs__60€
qusp__1 kit__0 matched pairs__50€
AlanElsdon__1 kit__2 matched pairs__60€
 
#37
I have a couple of PMs requesting a version of the PCB which has the JFET gates accessible for connection to Vref.
Currently they are directly connected to Gnd.

Please give a show of hands how many of you would want that (or how many ES9018 users).
Because of the small volume, there might be a surcharge for this new PCB.
(We already paid set-up charges for the standard versions, so it os only re-ordering costs for those.)

No free lunch, I am afraid.


Patrick
 
#40
AlanElsdon said:
necplusultra__1 Kit__2 matched pairs__60€
Murdoc__1 Kit__2 matched pairs__60€
maravedis__1 Kit__2 matched pairs__60€
Nikon1975__1 Kit__2 matched pairs__60€
pchw__1 Kit__2 matched pairs__60€
ernesternest__1 Kit__2 matched pairs__60€
heinz1__1 Kit__2 matched pairs__60€
vitalica__1 Kit__2 matched pairs__60€
mravinsky__1 Kit__2 matched pairs__60€
samoloko__1 kit__2 matched pairs__60 euro
BDL__1 Kit__2 matched pairs__60€
ujamerstand__1 Kit__0 matched pairs__50€
ystkkmkr__1 Kit__2 matched pairs__60€
prooptiki__1 Kit__0 matched pairs__50€
NicMac__1 Kit__2 matched pairs__60€
qusp__1 kit__0 matched pairs__50€
AlanElsdon__1 kit__2 matched pairs__60€
Mick.Carrick__1 kit__0 matched pairs__50€
Click to expand...
 
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