[Obi110] OK to get a different transformer?
RonR:
Winfried,
From a technical standpoint, it doesn't matter how or where you come up with 12V DC @ 1 Amp as long it ends up on the correct type of connector with the correct polarity (positive on the center pin) to plug into the OBi. It can come from a transformer based power supply, a switching based power supply, a 12V battery, eight D cells in series, or whatever. 12V DC @ 1 Amp is 12V DC @ 1 Amp regardless of its origin.
From a non-technical standpoint, I do not represent Obihai and I cannot speak to any warranty policy they may have regarding using anything other than what was supplied with the unit.
MB..:
Quote from: RonR on September 05, 2011, 11:55:51 am
12V DC @ 1 Amp is 12V DC @ 1 Amp regardless of its origin.
Some DC power supplies don't produce pure DC. The problem with older transformer-based power supplies is that they can have a very large ripple voltage, depending upon what the power supply was originally designed for. Now there may be sufficient additional voltage regulation circuitry inside the Obi to cope with a very large ripple, but I would suspect not.
I would have thought the UK Mains plug adapter solution (at about 35 pence per unit - http://www.amazon.co.uk/Kit-Pin-Euro-Mains-Adaptor/dp/B002TEB06I/ref=pd_cp_ce_3) would work out far cheaper than a replacement power supply.
Winfried:
Quote from: MB.. on September 06, 2011, 08:21:17 pm
I would have thought the UK Mains plug adapter solution (at about 35 pence per unit) would work out far cheaper than a replacement power supply.
I agree, and that's what I ended up buying for my test unit, but as I intend to resell Obi110 to customers, I really want to get a power supply with the European plug instead of adding a UK-to-European adapter.
I'll try to find a store over here that sells those at a reasonable price.
Thanks all for the infos.
Winfried:
I need to know the inside diameter in the DC connector used by the Obi110?
http://en.wikipedia.org/wiki/Coaxial_power_connector#Common_sizes_and_interchangeability
Apparently, it's smaller than the standard sizes of 2.1 and 2.5, maybe a 1.3 mm ID, but it's too small to measure.
Does someone know, so that I don't order the wrong power supply?
Thank you.
MB..:
If it's any help my best eyeball measurement with a micrometer (which won't fit into the hole) is 2mm (approx) inside and 5.5mm (accurate) outside diameter. This would be consistent with a 2.1mm/5.5mm spec.
The old Linksys WRT54GL and RT31P2 devices use a transformer with the same spec (12V 1A) and same connector as the Obi110. (I just tried pluigging a Linksys transformer into the Obi110 and it seems to work OK).
Navigation
[0] Message Index
[#] Next page
[*] Previous page