Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would
be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate
that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views.
It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if
you would like to post something on RF Cafe's
page, please do.
Below are all of the forum threads, including all
the responses to the original posts.
Post subject: RF to DC converter
Unread post Posted: Fri Feb 11, 2005 5:29 pm
I have an HF amp that produces 1KW. I run this thru a bi-directional coupler with -30db forward port. I need to build an ALC circuit to turn my driver down when the amp begins to overdrive. My exciter external ALC circuit expects to see 0Vdc when no turn-down is needed, and up to -4Vdc when the amp reaches distortion. I need a circuit that will take an RF signal in the HF band and develop an adjustable 0 to -4Vdc out. Any ideas or sources.
Thanks very much.
Unread postPosted: Sat Feb 12, 2005 1:44 pm
Check out Analog Devices - they have some excellent RF-to-DC converters.
Unread postPosted: Tue Feb 15, 2005 12:32 pm
Yes AD. they have linear and logrithmic ICs