[Amps] Need for bias switch (CW/SSB)
Vic Rosenthal
k2vco.vic at gmail.com
Sun Jan 17 12:26:09 EST 2016
Close to cutoff is class B. If the amplifier has a combination of fixed bias plus some way of generating additional bias when driven (e.g. a grid resistor in a grid-driven amp) then it can move deeper into class C as drive increases. This is a way to reduce CW clicks and still have the efficiency of class C.
Vic
> On 17 Jan 2016, at 3:36 PM, Steve Flood <kk7uv at bresnan.net> wrote:
>
> I have an adjustable bias where I can run a little ZSAC for Class AB. But I
> can dial the bias until it *just* cuts off and I often use this setting for
> CW. What class am I running when I do so? I've heard it informally called
> class B/C. Running CW at that setting, or even a little deeper bias into
> Class C territory does not create any reported key clicks here.
>
> Steve KK7UV
>
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
More information about the Amps
mailing list