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Old 23rd January 2009, 07:44 PM   #721
Salas is offline Salas  Greece
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Yes exactly the same PCB. A few resistor changes and more B+.
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Old 23rd January 2009, 08:07 PM   #722
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by salas
Yes exactly the same PCB. A few resistor changes and more B+.
Hi Salas

What do you mean by more B+.. are you refering to +28V ?

I will try this method... I have a lazer printer at work.. just need some glossy paper.

I am slow but very persistent.

Ricardo
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Old 23rd January 2009, 08:34 PM   #723
iko is offline iko  Canada
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Here's a good illustrated guide on the method:

http://electrons.psychogenic.com/mod...ratedGuide.php

We got these "dollar" stores here, where everything costs $1. I buy the glossiest inkjet photo paper there, and it works very well. Some people buy the Canon paper, or whatever. Once you get the procedure right, you'll be amazed at how easy it can be.

Do yourself a favour and get lacquer thinner, otherwise it's hard to get the toner off of the board.
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Old 23rd January 2009, 09:28 PM   #724
Salas is offline Salas  Greece
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Quote:
Originally posted by RCruz


Hi Salas

What do you mean by more B+.. are you refering to +28V ?

Ricardo
Your 46dB version uses 28V, yes. I can design for 55dB gain too for the Ikoflexer's PCB, and there, 36.5V B+ is gonna be needed, plus a few changes in some resistor values again.
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Old 23rd January 2009, 09:50 PM   #725
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Is there an easy way to make a spreadsheet, with needed db-gain as input, resulting transformer voltage and resistor changes?

Carsten
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Old 23rd January 2009, 09:54 PM   #726
Salas is offline Salas  Greece
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If you review the thread, yes. I can be easily organized into a spreadsheet.
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Old 23rd January 2009, 10:03 PM   #727
RCruz is offline RCruz  Switzerland
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Salas

Did you already post a 28v shunt led version ?

Ricardo
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Old 23rd January 2009, 10:16 PM   #728
Salas is offline Salas  Greece
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Here is one LED shunt for you to mate with Ikoflexer's PSU board you gonna iron on copper.
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Old 24th January 2009, 02:47 AM   #729
iko is offline iko  Canada
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Here's the regulator board, as an example. Not exactly professional...
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Old 24th January 2009, 02:51 AM   #730
iko is offline iko  Canada
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... and it's top. My apologies for the picture quality.
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