"Daniel" wrote in message
...
On 20/05/14 07:06, Ian Field wrote:


"Daniel" wrote in message
...
On 22/04/14 04:26, Uncle Peter wrote:
On Mon, 21 Apr 2014 12:22:39 +0100, Daniel
wrote:

Snip

But surely if it's not adjusted, then it's overcompensating when the
supply is not fully loaded.

No, in a Switched Mode Power Supply, as the load varies, it is
*Switched On* for more of less of the Alternating Cycle. If the
supply's output (Current/Voltage) is falling below the required
(Current/Voltage), the Switching element/transistor is switched on for
more of the input cycle, not the input voltage!!

You must be thinking of the thyristor buck regulators in 80s colour
tellies.

T.V.'s were never my thing, so when you say "thyristor buck regulators", I
say, "What you talking'bout, Willis?!?!" (from American T.V. sit-com from
about the eighties!!)

I'm beginning to get the impression that trying to explain it to you would
be tedious and futile.