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Old 7th October 2018, 05:47 PM   #1
wcwc is offline wcwc  United States
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I didnít see a thread for this.

I just have a simple question. When attaching the regulator to the heat sink do we just need to use the included insulator bare or is thermal grease required?
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Old 7th October 2018, 10:19 PM   #2
Russ White is offline Russ White  United States
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No grease is required.
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Old 7th October 2018, 10:38 PM   #3
wcwc is offline wcwc  United States
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Thanks. When testing should I use a resistor as a load. If so any particular size and rating?
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Old 7th October 2018, 10:48 PM   #4
Russ White is offline Russ White  United States
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No load resistor required - just measure the output.

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Old 25th April 2019, 06:26 AM   #5
itsikhefez is offline itsikhefez  United States
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I will take advantage of the already created thread for the Centaur for my simple question as well.

Are there any issues with 5V output on a 12V input with the supplied heat sinks?
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Old 29th April 2019, 02:48 PM   #6
BrianDonegan is offline BrianDonegan  United States
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Quote:
Originally Posted by itsikhefez View Post
I will take advantage of the already created thread for the Centaur for my simple question as well.

Are there any issues with 5V output on a 12V input with the supplied heat sinks?
It will depends on the current demands of your load. It's a pretty hefty heatsink, so you will probably be okay .
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Old 3rd May 2019, 10:33 AM   #7
itsikhefez is offline itsikhefez  United States
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Originally Posted by BrianDonegan View Post
It will depends on the current demands of your load. It's a pretty hefty heatsink, so you will probably be okay .
Thanks Brian! I'll be using it for an RPi with piCorePlayer, I think load will be around 1A.

The included 15kuF 50V cap is slightly too tall for my enclosure.
For 5V output, swapping in a 35V cap (like UCC KMH) should be fine?
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Old 3rd May 2019, 10:53 AM   #8
BrianDonegan is offline BrianDonegan  United States
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Quote:
Originally Posted by itsikhefez View Post
Thanks Brian! I'll be using it for an RPi with piCorePlayer, I think load will be around 1A.

The included 15kuF 50V cap is slightly too tall for my enclosure.
For 5V output, swapping in a 35V cap (like UCC KMH) should be fine?
Yes, or use slightly shorter standoffs.
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Old 15th June 2019, 10:19 AM   #9
nautibuoy is online now nautibuoy  United Kingdom
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Would it be expecting too much of these to supply a load needing 1.3A @ 26V?


I'm assuming a carefully chosen transformer to keep Vin vs Vout as small as possible and the use of a taller heatsink.
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Old 17th June 2019, 07:56 PM   #10
BrianDonegan is offline BrianDonegan  United States
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Originally Posted by nautibuoy View Post
Would it be expecting too much of these to supply a load needing 1.3A @ 26V?


I'm assuming a carefully chosen transformer to keep Vin vs Vout as small as possible and the use of a taller heatsink.
The regulator can deliver up to 3A, and the key factor with voltage is the input/output delta, so I think you should be fine. Note the the included C5 (2200uF) is a 25V part, so that should be updated to a higher voltage rating.

I think the included heatsink should be fine as well.
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