[Coco] CoCo2 26-3134A with 230V~ ???

[Jens]

The CoCo2 Service Manual says:

 > power transformer provides 17,2 VAC, center-tapped, ad 1.8 amps RMS

What does it really mean?
The output is: 17,2 / 2 = +8,6V AC and -8,6V AC isn't it?

But at what ampere? 1.8A/2=0.9A both?

So i can use e.g. a simple transformator with 2x 9V AC output with 2x 1.67A?



A switching supply solutions has some charm. If i inject voltage after the 
rectifier bridge, then i will lost the main power switch, isn't it? That's a 
little bad.
So if i use a DC solution, then i will inject it on the same place as the 
tranformator output.
But what voltage/ampere is needed. Is it safty for the rectifier bridge?



Am 06.10.2014 um 09:15 schrieb Camillus Blockx:> you need a transformer 240 v 
Prim / 9 V AC SEC with a center pin .
>
> lead 1        = pin1
> centerpin   = pin 2
> lead 2        = pin 3
> On 10/6/2014 2:05:58 AM, Jens <cocolist at jensdiemer.de> wrote:
>
> My CoCo 2 26-3134A is there. (Thanks to Tim!)
>
> Now i need information about the power supply. I need a way to use the CoCo with
> 230V~...
>
> On the Mainboard i see the A1, A2 and A3 pins. (The transformator was removed to
> save weight.)
> What voltages and polarity is needed there?!?
>
>
> Where can i find the needed information?
>
>
> --
>
>
> Mfg.
>
> Jens Diemer
>
>
> ----
> http://www.jensdiemer.de
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-- 


Mfg.

Jens Diemer


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http://www.jensdiemer.de