[sdiy] dual output DC-DC converters

[harry bissell]

It all depends on if a half-wave solution is acceptable to you. To me... 
not !

I would only use the half wave for a few millivolts... or if other 
reasons (bipolar
with not CT on the transformer)... forced me into it.

I'd rather take my chances with a DC/DC converter  :^P

H^) harry  (now back to re-testing another 200 DC/DC converters that 
failed the
first test :^)


Paul Perry wrote:
> With a 15v AC wart, peak is over 20 volts with a half wave
> rectifier. Even allowing for 3v  reg drop and .6V diode drop,
> you have plenty of headroom.
>
> If you need a beefy 16 or 18V AC plugpack, they are commonly 
> supplied for burglar alarms. usually with screw connector outputs.
>
> paul perry melbourne australia
> ----- Original Message ----- 
> From: "Seb Francis" 
>   
>> I've had good results using 500mA 15VAC wall warts to give +/-15VDC.  It 
>> works as long as you don't draw too much current (e.g. 200mA max).  Of 
>> course it varies from wall wart to wall wart.
>> But you can also get 18VAC wall warts pretty easily - then you're 
>> certain to get +/-15VDC from your linear reg.  (and it helps keep your 
>> studio warm in the winter :)
>>     
>
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