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XEN SHPP -- Simple Headphone Protection
XEN SHPP -- Simple Headphone Protection
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Old 21st September 2016, 02:06 PM   #11
jan.didden is online now jan.didden  Europe
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Quote:
Originally Posted by EUVL View Post
According to
Integrated Analog-To-Digital and Digital-To-Analog Converters
Rudy J. van de Plassche
Section 9.2.1

The Veb junction can be used a Zener diode when reversed bias current is limited to <1mA.
So we can actually simply change R5, R6 to 10k intead of 1.5k.


Patrick
Yes it can but is very noisy. Some equipment uses reverse-biased e-b as a noise source...
BTW regards from Jacco, I just met him in Turnhout. ;-)

Jan
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Old 21st September 2016, 02:13 PM   #12
EUVL is offline EUVL  Europe
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But in this case noise does not matter.
It is only discrete logic switching.




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Old 28th October 2016, 09:02 AM   #13
RollE2k is offline RollE2k  Sweden
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Patrick: is it possible to buy these boards from you?
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Old 28th October 2016, 12:36 PM   #14
EUVL is offline EUVL  Europe
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In principle yes.
Need to check if someone has time to send to you.


Thanks for your interest,
Patrick
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Last edited by EUVL; 28th October 2016 at 12:40 PM.
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Old 28th October 2016, 12:47 PM   #15
RollE2k is offline RollE2k  Sweden
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Quote:
Originally Posted by EUVL View Post
In principle yes.
Need to check if someone has time to send to you.


Thanks for your interest,
Patrick
Great, let me know as soon as you have an answer. I would be interested in to-92 sinks at the same time also if possible.
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Old 28th October 2016, 03:31 PM   #16
EUVL is offline EUVL  Europe
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Heat sinks out of stock.
We shall only restock when we have other GBs to serve.
Too much work and margin too low.

Sorry.


Thank you for your interest in any case,
Patrick
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Old 16th June 2017, 10:46 AM   #17
Morde is offline Morde  Finland
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Hi Patrick.

Do have these headphone protection boards available now? I would like to use one with UTHAiM...
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Old 19th June 2017, 06:34 PM   #18
EUVL is offline EUVL  Europe
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Can you see whether you can organise a GB and take 10~20 pieces, all ship to you ?
Sending just one is A LOT of work.


Patrick
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Old 19th June 2017, 06:45 PM   #19
dabore84 is offline dabore84  Netherlands
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XEN SHPP -- Simple Headphone Protection
I'm also in for couple of boards.
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Old 19th June 2017, 07:09 PM   #20
EUVL is offline EUVL  Europe
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Please open a new thread for Group Buy and post there only.


Thx,
Patrick
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