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Author Topic: After trimming PSU´s  (Read 1879 times)

Showcase

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After trimming PSU´s
« on: June 21, 2014, 05:51:30 PM »
We have now trimmed 2 psu´s for a 56 channel console, checked voltages in master section and its fine but...

...now all these small leds in matrix, overload lamp etc etc... are very weak in strength, anyone know what is powering those?

All the best/ Mattias
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sintech

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Re: After trimming PSU´s
« Reply #1 on: June 21, 2014, 07:35:02 PM »
They power between +18.5V and 11V rails, you may have to trim the logic rail to be exactly 6.5v
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Re: After trimming PSU´s
« Reply #2 on: June 21, 2014, 10:41:34 PM »
Thanks sintech

The logic rail trim is inside the psu i guess? :)
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sintech

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Re: After trimming PSU´s
« Reply #3 on: June 21, 2014, 11:42:21 PM »
You meter between the +18.5v and +11v positives, and set this for 6.5v by adjusting the +7 rail in the PSU
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Re: After trimming PSU´s
« Reply #4 on: June 23, 2014, 10:30:29 PM »
Worked like a charm, leds is glowing better than ever before, thanks for the help :)
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sintech

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Re: After trimming PSU´s
« Reply #5 on: June 24, 2014, 02:23:28 AM »
Awesome  :)
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