Forgot to mention, I will need around 1A of current at 12V!
-----Original Message-----
Sent: 18 December 2003 14:09
To: Multiple recipients of list CHIPDIR-L
Hello,
Thanks Bob, any suggestions on the switcher (capable of rectified mains)?
-----Original Message-----
Sent: 18 December 2003 13:44
To: Multiple recipients of list CHIPDIR-L
No need for detection. Do it the normal way.
Input terminals go to a bridge rectifier with an output filter capacitor.
Any common buck converter takes output of filter capacitor and converts to
12 volts.
No need for detection. The bridge passes DC directly and converts AC to DC.
It also is also not sensitive to reverse polarity when connected to DC.
Have fun, Bob Smith
--- Avoid computer viruses, Practice safe hex ---
-- Specializing in small, cost effective
embedded control systems --
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Robert L. (Bob) Smith
Smith Machine Works, Inc.
9900 Lumlay Road
Richmond, VA 23236 804/745-1065
[EMAIL PROTECTED]
----- Original Message -----
To: "Multiple recipients of list CHIPDIR-L" <[EMAIL PROTECTED]>
Sent: Thursday, December 18, 2003 4:54 AM
> Hello,
>
> Does anybody have any idea how one can go about designing a power supply
> which can run from AC mains or DC - automatically switching itself for
> either input. For example 90-260V AC and 8 to 24V DC (output 12V, 1A)?
>
> I guess there will be some kind of front end detection circuit (of AC or
DC)
> which controls how the input is converted.
>
> Best regards
> Darren Logan BSc(Hons)
> Development Engineer
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