gbs8200 power source problems.

[ulera]

So the upscale I ordered finally arrived, and apparently, the sellers idea of power cable included is this:


The only thing I've seen that kinda cable with is the battery pack on landline phones. What would I have to do to rig up some form of wall power?

[ericj]

From a quick Google search, it looks like that's the cable it comes with and it takes 5V DC +/- @ 2A. There is also a barrel plug on the board so you can use an AC adapter that outputs 5V DC and at least 2A.

The instruction manual explains what you'll need to do.

[ulera]

According to an email from the manufacturer it takes a 2.5mm plug which is the only one I don't have. I ran to talmart and bought a universal 8 plug ac adapter because it was all they had and NONE of the 8 plugs fit. WHY THE CRAP COULD THEY NOT JUST INCLUDE A USEABLE POWER CABLE!

[133MHz]

I too have a Gonbes GBS-8220. Being the sort of lazy person I am I ran it from an ATX power supply by shoving the bare ends of the wires into one of the Molex connectors, but a good friend of mine wanted to borrow it recently along with my PS2, lending it with such kludgey contraption for power to a non-tech person would be asking for trouble so I looked around for an easy to find, compatible PSU and I came across one of these:



Switching type regulated plug-in PSU capable of 5V @ 2.5A and a suitable plug is included. Keep in mind that the 5VDC must be regulated, those large and heavy wall warts of years past are a no-no since their output voltage is not regulated at all.

By the way these video scalers are meant to be used in arcade cabinets, hanging off the arcade board PSU which is why they need regulated 5VDC and their idea of a power cable is just two bare wires.

[ulera]

Bought something similar, didn't include a connector that fit. What do you mean regulated?

[ericj]

What do you mean regulated?

Regulated to output 5V. Most cheapo AC adapters aren't regulated to only output 5V, but rather decrease voltage by using 2 wire windings around an iron core. The relationship between the number of coils in the second winding and the first winding decreases voltage by a %. For example, if the second winding had half as many coils as the first, the output voltage would decrease by half of the input voltage. These values get you close to what the adapter states as output, but not perfect since input voltage fluctuates in your house/outlet.

The device you purchased requires a 5V regulated supply, no more, no less, or you'll damage it or it will work improperly. Like 133 stated, it's meant for an arcade cabinet to run off a regulated power supply.

[Frank_fjs]

I have one of these encoders too, the reason they come with the power cable that you picture is that their primary use is within an arcade machine, and arcade power supplies just use screw in terminals to connect everything.

The DC plug isn't an uncommon size, should be easy for you to find something suitable.

[ulera]

What do you mean regulated?

Regulated to output 5V. Most cheapo AC adapters aren't regulated to only output 5V, but rather decrease voltage by using 2 wire windings around an iron core. The relationship between the number of coils in the second winding and the first winding decreases voltage by a %. For example, if the second winding had half as many coils as the first, the output voltage would decrease by half of the input voltage. These values get you close to what the adapter states as output, but not perfect since input voltage fluctuates in your house/outlet.

Well darn. I found an adapter but it isn't regulated. Are you sure it's unsafe to use?

The device you purchased requires a 5V regulated supply, no more, no less, or you'll damage it or it will work improperly. Like 133 stated, it's meant for an arcade cabinet to run off a regulated power supply.

[133MHz]

In the case of this device it is indeed unsafe. There's no onboard regulation for the +5V line therefore if the voltage gets too high, chips will blow up.

[ulera]

I've searched everywhere for an AC Adapter that will work on this thing. Can ANYONE help me out? (I believe the plug size is 5mm outer and 2.5mm inner)

[Frank_fjs]

One of these should do the trick:

http://www.ebay.com/itm/New-5V-DC-3000mA-3A-Switching-Power-Supply-AC-Adapter-Charger-5-5mm-x-2-5mm-2A-/300637535405?pt=Laptop_Adapters_Chargers&hash=item45ff64bcad

http://www.ebay.com/itm/5V-DC-3000mA-3A-AC-Adapter-Charger-Switching-Power-Supply-5-5mm-x-2-5mm-2A-New-/270944548823?pt=US_Monitor_Power_Supplies&hash=item3f158db7d7

http://www.ebay.com/itm/New-5V-DC-3000mA-3A-Switching-Power-Supply-AC-Adapter-Charger-5-5mm-x-2-5mm-2A-/370618403854?pt=Laptop_Adapters_Chargers&hash=item564a940c0e

http://www.ebay.com/itm/AU-Converter-AC-100-240V-to-DC-5V-2A-Power-Adapter-Plug-Supply-5-5x2-5mm-/290766036666?pt=PDA_Accessories&hash=item43b3019eba

http://www.ebay.com/itm/New-AC-DC-Adapter-Power-Supply-for-Sirius-StarMate-5V-2A-5-5-MM-X-2-5-MM-/280912889348?pt=Other_MP3_Player_Accessories&hash=item4167b68604

[ulera]

It doesn't look like any of those are regulated though

[Frank_fjs]

They all seem to have voltage protection though.

Looking at this one in particular: http://www.ebay.com/itm/5V-DC-3000mA-3A-AC-Adapter-Charger-Switching-Power-Supply-5-5mm-x-2-5mm-2A-New-/270944548823?pt=US_Monitor_Power_Supplies&hash=item3f158db7d7

Line regulation (full load).......±0.5%

Which means it spits out between 4.975 to 5.025 volts, which should be fine.

[133MHz]

They are all regulated universal switching power supplies.

[Frank_fjs]

^

They are all regulated universal switching power supplies.

There you go, take your pick basically.