On Thu, 01 Nov 2018 17:11:16 -0400
speff@interlog.com wrote:

> Quoting John Coppens <john@jcoppens.com>:
>=20
>=20
> The chip is made in China by Bright Power (Shanghai).
>=20
> https://i.imgur.com/PC2pGzD.png

Hi sp.

Thanks for the hint. I downloaded the datasheet (very minimal!)
The circuit is slightly different because of the extra lowpass.

I suspect there is no second winding on the output coil, and
the 14k I measured is likely leakage current in the capacitor.

This is the simplest switcher I ever came across. Even the fact
it gets it power directly from the 300+ Volt line is amazing.

Again, much appreciated... And somewhat surprised and disappointed
Google didn't lead me to it.

BTW, an ad on the page at datasheetspdf.com, offered them in lots
of 25 at $0.1335/ea.

John
--=20
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