[PSUBS-MAILIST] PWM

[Alec Smyth via Personal_Submersibles]

Yes, that's the one. I'd seen that video, but thought it was too much for
most. At least it was too much information for me!


Alec

On Thu, Apr 6, 2017 at 7:47 PM, Jon Wallace via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

>
> This one?
> https://www.youtube.com/watch?v=-fii6G_ewdw
>
>
>
> On 4/6/2017 7:17 PM, Alec Smyth via Personal_Submersibles wrote:
>
>> Hi guys, just a quick update. I received the LED drivers and just spent
>> an hour or so playing with them. Everything worked like a charm so tomorrow
>> they go into Shackleton. I was particularly pleased because running them in
>> air for a minute or so, both the lights and drives were still cool to the
>> touch. I was running two 5K lights off a shared drive, which I set at 34.1V
>> and 2.34A per the LED specs. That's 80 watts, and this is a 400 watt drive
>> so I guess that's how one ends up with cool circuitry. This is not going to
>> need a fan on its enclosure, just holes. My drive is a "MingHe D3806."
>>
>> The drives came with no instructions whatsoever but there were reasonable
>> explanations online. Here is a video that will give you a pretty clear idea
>> of how they are configured. The video is of another model from the same
>> manufacturer, but the controls are identical. Mine is a combination step up
>> / step down, which has the benefit of more input voltage flexibility but is
>> less efficient.
>>
>> https://www.youtube.com/watch?v=S_KjmF1iI9w&t=201s
>>
>>
>>
>> Best,
>>
>> Alec
>>
>>
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