Re: DIY X-10 (or Insteon) filter

[artie <artie.m@xxxxxxxxx>]

In article <43ab9488.26029935@xxxxxxxxxxxxx>, Dave Houston
<nobody@xxxxxxxxxxxx> wrote:

> This topic comes up periodically.
>
> There is a schematic for a 125kHz filter in Fig. 28 (p16) of the datasheet
> for the National Semiconductor LM1893 (an obsolete FSK powerline modem
> chip).
>
> The chokes need to be rated for the current they'll see and the capacitor
> should be X2 rated.

...and since these caps are such *precision* parts, (10 to 20%), you
might build yourself a cheepie bridge so you can pull turns off the
toroid to adjust the thing to be close to resonant where you want it.

--
Namaste--