Re: OT: modifying your amp for lower drive requirement

Posted by Scott Ellington on Dec 21, 2010; 3:16pm
URL: http://elecraft.85.s1.nabble.com/OT-modifying-your-amp-for-lower-drive-requirement-tp5854009p5857068.html

Sorry, I should have said, "...uses an input attenuator of more than a few dB."  They help with impedance matching and stabilization, so you probably couldn't take them out anyway.  In any case, it would only reduce drive requirement to maybe 30 W.

73,

Scott  K9MA


On Dec 20, 2010, at 7:28 PM, Phil & Debbie Salas wrote:

> "It's very unlikely any solid-state amplifier uses an input attenuator:
> Transistors and FET's just don't have that much gain."
>
> The Ameritron ALS-600 has about a 15 ohm input impedance.  Then they put a
> series 35 ohm resistor for matching and reducing gain.
> Phil - AD5X
>
> ______________________________________________________________

Scott Ellington
Madison, Wisconsin
USA



______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html