I’m thinking of stacking five 48V constant voltage supplies instead. Some have
reverse polarity diodes in them, or I might just add external ones anyway.
> On Feb 22, 2020, at 4:34 AM, Alex wrote:
>
>
> Be careful with the Meanwell LED Constant Current supplies, we used a boat
> load (litera
Be careful with the Meanwell LED Constant Current supplies, we used a boat
load (literally - it was a complete lighting refit on some gigantic yacht)
of them driving series strings of various lengths of 350mA bare LED dies in
posh housings. They worked fine and would easily put out >300VDC at 35
I’m having trouble finding a 250V DC power supply that can generate 1/4 amp.
Meanwell were the closest I have got so far.
I’m looking for something to drive 4 banks of 26 tubes arranged as a seven
segment display. Using a bench supply, it seems that 250V is the smallest
voltage that will reliab
You probably just want a HV supply, about 250 VDC, and a fuse instead of a
constant-current supply.
I think IN-28's are rated at 13mA, so you could arrange them in groups of
16 with a 1/4 amp fast-blo fuse to protect each group.
If power consumption is a concern, you can get clever and step-up
Yes I see it, ‘open circuit voltage’.
Sent from my iPad
> On Feb 20, 2020, at 7:37 PM, Paul Andrews wrote:
>
> A whole bunch of IN-28s. The current won’t be constant, and I don’t want the
> voltage to fluctuate, so time for plan B it seems. Whatever that might be.
>
> Thanks for the insight,
A whole bunch of IN-28s. The current won’t be constant, and I don’t want the
voltage to fluctuate, so time for plan B it seems. Whatever that might be.
Thanks for the insight, is that on that datasheet somewhere?
> On Feb 20, 2020, at 6:48 PM, gregebert wrote:
>
>
> Essentially, yes. But be
Essentially, yes. But be aware of the open-circuit output voltage; the
supply will attempt to pump-out the amount of requested current, and in
order to do so, it will increase it's output voltage until the desired
current is obtained.
Just make sure that *you* are not the load. For example, if y
