[sdiy] DIY Sequenced Power?

[Jason Tribbeck]

I've made a couple that are designed to do a simple stepped power-on from a
single supply.

Maximum current output isn't massive (ostensively 10A across two outputs),
but what I use them for is so that when the PC turns on, all the monitors,
and anything that will only work with the computer (such as the amplifier)
will come on.

http://www.tribbeck.com/electronics/usbswitch2/

Maximum current limitation is based on the input (single IEC-320), but if
you had multiple inputs and/or higher power cable, you could get away with
larger.

It's also designed to allow two PCs to control it because at the time I had
a Mac and a PC. It basically works by using the USB power to power a PIC
which then turns on supplies via a solid-state relay. The PIC could be
replaced by a couple of timers (although I did have an idea to allow remote
control of the power).

Note that I've learnt a bit since doing this, and I would've increased the
isolation between the live/neutral and earth (the isolation between the
low-voltage and the high-voltage is fine though). I have mentioned this in
the text (basically remove the earth filled area on the right hand side of
the board).

At my previous company, we used APC PDUs, and I took one apart with a view
to extend mine to larger outputs - but I didn't get around to it, because I
didn't need it.

On Mon, 5 Mar 2018 at 08:21 Roman Sowa <modular at go2.pl> wrote:

> How about Speaker Delayed Switch? The circuit that connects speaker to
> the amp after couple of seconds after power up. I'm sure you can buy
> them everywhere as DIY kit really cheap. Trim every one of 6 to
> differrent time and you have your sequencer.
>
> Roman
>
> W dniu 2018-03-05 o 00:39, Joel B pisze:
> > Hi SDIY, I have a pile of power conditioners in my studio and have to
> walk around crawl under various things to power it all on and to power it
> all off. The idea of putting them all on one sequential power box on one
> outlet seems pretty dangerous, not to mention $250-650 for a power
> sequencer that the 6 conditioners could hang off...
> >
> > Any ideas for sequentially turning on 6 separate power supplies in a
> room, each on a separate outlet? What parts would you choose to build such
> a thing?
> >
> > Joel
> >
> > Sent from my iPhone
> >
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