On Tue, 27 Nov 2007 07:09:46 -0600, John Fields wrote:

>>> Just buy a proper one, they are available
>>> Try here for a 9.6V 2.5A one for example:
>>> http://www.accesscomms.com.au/Products/Adaptors.htm
>>>
>>> Or parallel a couple of 1A ones, everyone stocks those.
>>
>>
>>** That is an EXTRAORDINARILY dangerous suggestion !!
>>
>>AC adaptors must NEVER be wired in parallel - or one will power the other
>>making the exposed pins live at 240 volts.
>
> ---
> If their mains plugs are used to plug in to mains receptacles and
> they're phased correctly, how so?

Someone might unplug one of them, at which point its pins will be live.

When dealing with high voltages, understand how something works is often
less important than understanding how it may fail.

On Wed, 28 Nov 2007 02:32:08 +0000, Nobody <nobody@nowhere.com>
wrote:

>On Tue, 27 Nov 2007 07:09:46 -0600, John Fields wrote:
>
>>>> Just buy a proper one, they are available
>>>> Try here for a 9.6V 2.5A one for example:
>>>> http://www.accesscomms.com.au/Products/Adaptors.htm
>>>>
>>>> Or parallel a couple of 1A ones, everyone stocks those.
>>>
>>>
>>>** That is an EXTRAORDINARILY dangerous suggestion !!
>>>
>>>AC adaptors must NEVER be wired in parallel - or one will power the other
>>>making the exposed pins live at 240 volts.
>>
>> ---
>> If their mains plugs are used to plug in to mains receptacles and
>> they're phased correctly, how so?
>
>Someone might unplug one of them, at which point its pins will be live.

---
Yup, I didn't think about that. Thanks.


--
JF

"Phil Allison"
> "Fred Abse"
>> Phil Allison wrote:
>>>>
>>>>> The value of the filter cap has almost no effect on the rms current
>>>>> figure - allowing only that the ripple voltage is under 25% of the
>>>>> peak value.
>>>>
>>>> It has a marked effect on the *peak* current, however.
>>>
>>>
>>> ** Bollocks.
>>>
>>
>> You really think so?


** The following section has just been added to this popular audio design
site to debunk the notion posted by Fred Abse.

http://sound.westhost.com/power-supplies.htm#myth



....... Phil