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Old 04-19-2021, 08:38 AM   #1
alberto79
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Default Icom PS-15 power supply

Hi!
I have an old (but good) Icom PS-15 power supply.
This PSU was modified by a technical and now the original control circuit is no longer there.
I want to make the original circuit because the modified circuit donít work fine.

The original circuit use an old components and i need help to find (if possible) equivalent (but modern) components.

The first components is U05, rectifier/filter.
The second is XZ-051, reference voltage.






Thank you for help.

Alberto
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Old 04-19-2021, 11:33 AM   #2
R_J
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Default Re: Icom PS-15 power supply

XZ-051 is just 1 5.1 volt 1 watt zener diode. D4 & D5 could be any general purpose 1 amp diode like 1n4007

Last edited by R_J; 04-19-2021 at 11:36 AM..
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Old 04-19-2021, 02:07 PM   #3
alberto79
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Default Re: Icom PS-15 power supply

Quote:
Originally Posted by R_J View Post
XZ-051 is just 1 5.1 volt 1 watt zener diode. D4 & D5 could be any general purpose 1 amp diode like 1n4007
Thank you very much!

in your opinion what is this circled in red?

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Old 04-19-2021, 05:09 PM   #4
R_J
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Default Re: Icom PS-15 power supply

That is the adjustment pot. R9 500Ω What you circled is the controls wiper. (the center pin of the control)
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Old 04-19-2021, 11:08 PM   #5
eccerr0r
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Default Re: Icom PS-15 power supply

What was the hack that was done?

Doesn't appear to have much protection circuit in this original circuit... so is it better?

I guess if the hack doesn't work, it doesn't work...
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