Re: plus4 power supply

From: silverdr_at_wfmh.org.pl
Date: Sat, 22 Sep 2012 20:57:22 +0200
Message-Id: <2D378D48-2C66-40F1-A1AB-ED22101027D9@wfmh.org.pl>
On 2012-09-22, at 18:11, Gerrit Heitsch wrote:

>>>>> 1) Power, 5V, 2A might have needed a different plug
>>>> 
>>>> I think this DIN should handle 2A w/o problems but In fact I am not sure about the actual specs.
>>> 
>>> Hm... It would be borderline... If the contacts are just a bit worn, you start having a measurable voltage drop on the connection.
>> 
>> But there are two pins allocated for +5. Just by adding second pin to the plug they could have doubled the current there.
> 
> You also need 2 pins for GND to make that work properly. Otherwise you still have a bottleneck.

Sure, but for GND there are even more (three) pins already available...

[...]

> But while you're at it... if you feel like it, you could find out what's the minimal Vdd (usually +12V, pin 13) for VIC to give you a picture with colors. My last attempt was 3 diodes (1N4001) in series, lowering the voltage on pin 13 from 12V to about 10V and still everything worked. From my experience with a dead C90, I know that there is a voltage where everything still works but the picture loses color. For the 6569R3 involved that was about 8V.

I ordered two adjustable switching stabiliser modules from eBay/HK. This test (I still keep it in my mind) I want to do once I get the modules. Should arrive next week /me hopes.

-- 
SD!
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Received on 2012-09-22 19:00:09

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