The UK Home Automation Archive

Archive Home
Group Home
Search Archive


Advanced Search

The UKHA-ARCHIVE IS CEASING OPERATIONS 31 DEC 2024


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Inaudible noise on telephone lines...



Hi Frank,

Thanks for the circuit - may come in useful if I can't find a cheap
ready made device. As for switching the polarity - yep, I've tried
everything I can think of...!

Thanks,
Andy.

--- In ukha_d@xxxxxxx, "Frank Mc Alinden" <fmcalind@b...>
wrote:
> Hi Andy
>
> Did a quick google ...Have a look at the  link below ....Have you
tried
> swapping the line connections ??? just a stab in the dark ......
>
http://home.att.net/~theremin1/Circuit_Library/offhookdcindicator.html
>
> HTH
> Frank




Home | Main Index | Thread Index

Comments to the Webmaster are always welcomed, please use this contact form . Note that as this site is a mailing list archive, the Webmaster has no control over the contents of the messages. Comments about message content should be directed to the relevant mailing list.