And Digikey does stock the Murata part, for about $4.30. Why I couldn't
find it when searching their site for switching regulators, I don't know.
John
----
On 12/04/2016 02:39 PM, John Ackermann N8UR wrote:
Thanks for that pointer! When I searched Digikey, I wasn't able to find
anything that was in the 3-lead TO-220 case. I will definitely check
out the Murata units, as I suspect they perform better than this one.
John
----
On 12/04/2016 02:01 PM, Adrian Godwin wrote:
Thanks for this. I've seen something similar from Murata :
http://uk.farnell.com/murata-power-solutions/oki-78sr-5-1-5-w36-c/converter-dc-dc-1-o-p-7-5w-1-5a/dp/2102101
Since they're a mainstream supplier of inductors they may have managed
better performance - it would be interesting to compare.
On Sun, Dec 4, 2016 at 6:50 PM, John Ackermann N8UR <j...@febo.com> wrote:
I found a cute little switching regulator that's a drop-in
replacement for
an LM7805: http://www.ebay.com/itm/261243604047
I got a couple to play with, mainly to see how bad the noise would be.
Here are spectrum analyzer and PN shots comparing a cheap surplus
OCXO when
driven by a regular 7805 and by the switching replacement.
The switching frequency is supposed to be 2 MHz but you can see that
it's
more like 2.4 MHz. Whether this performance is sufficient for any
application is up to you. It sure runs a lot cooler than a 7805,
though!
John
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