Installed the UpTone JS-2 LPS Today WOW!

[jtwrace]

Although the JS-2 has two separate DC output jacks, I can only afford to include one of these custom cables in the base price of the supply (plus each one takes time to make--and I dislike soldering cables). I also sell this unique cable separately for $45--only to JS-2 buyers.

 

Would you supply the end user with the parts list? I love soldering whenever I can to pay for my Metcal solder station I had to have. :-)

[jtwrace]

I can promise that first attempts will not be pretty.

 

Is this a challenge? You haven't seen my looms...

 

Thanks for the info though!

[jtwrace]

Hi Barr:

 

Your JS-2 will power your Aries Mini just fine. Try it and see!

 

Best,

 

ALEX

 

That's not true. It will power it but the MINI needs a minimum of 14vdc IIRC. The ARIES and ARIES LE is ok on 12Vdc but NOT the MINI. It will power it and it will work but the regulator will burn itself over time.

[jtwrace]

And just to backup my post above because I really am all about that data.

MINI Power Requirement

 

 

ARIES and ARIES LE Power Requirement

[jtwrace]

The mini uses switching DC-DC regulators, so the input current will increase as the input voltage decreases. There are various tradeoffs when doing the design, one approach uses a high input voltage which means a low input current, which allows a cheaper lower current regulator chip. Or you can go with a lower voltage higher current chip, lower voltage usually means lower cost, but the higher current makes it more expensive. It seems the designer has gone for the higher voltage lower current chip.

 

The higher the current the more heat gets generated inside the chip, and these chips are usually very small with very small thermal interface (power pad), so the chip could easily get too hot as the voltage decreases, even though electrically it is fine.

 

John S.

 

Also one must remember the price point as well as the actual physical space of this unit...

[jtwrace]

That said, it would be just one tiny resistor change next to one of the JS-2 switch settings to give you a 14V output. Max current at that voltage would probably drop to about 3.5 to 4 amps, but that is plenty for the Aries mini requirement of 1.2A at 14V.

 

Ciao,

 

--Alex C.

Yes, of course. I'd be hesitant to start doing that though unless you're going to offer custom engraved cases with the proper voltage. Otherwise it's a matter of time until one is sold on the used market and someone thinks it's 12Vdc and they manage to fry their piece of equipment. Not good. ;-)