Re: What do they "degenerate"?

From: Paul Burridge (pb_at_notthisbit.osiris1.co.uk)
Date: 06/29/04


Date: Tue, 29 Jun 2004 20:14:35 +0100

On Tue, 29 Jun 2004 19:40:50 +0100, "Leon Heller"
<leon_heller@hotmail.com> wrote:

>"Paul Burridge" <pb@notthisbit.osiris1.co.uk> wrote in message
>news:e2m2e05gch38b7f2sgj1vdj4ar4jfm4nso@4ax.com...
>> On Tue, 29 Jun 2004 07:10:13 +0100, "Kevin Aylward"
>> <kevin.aylwardEXTRACT@anasoft.co.uk> wrote:
>>
>> >Well, this is not really accurate. Sure, the gain does change with
>> >temperature, but its not that drastic. A more series problem is that
>> >without an emitter resister, you can only handle, say 10mv, and even
>> >this would be at 10% distortion.
>>
>> What's your favourite level for Ve, Kev?
>
>A useful rule of thumb is to make the bypassed emitter resistance about 1/10
>of the collector resistance, according to the AoE. You can fix the gain with
>an unbypassed resistance.

True enough; and there's a right config. for doing this and a wrong
one. I was just interested in Kev's view on his favourite Ve., but he
seems to have interpreted it as some sort of trick question, as no
answer appears forthcoming...
<shrug>

-- 
"What is now proved was once only imagin'd." - William Blake, 1793.


Relevant Pages

  • Re: Thumb position
    ... Wiggle your fingers. ... Uhmmm...you plan on playing with the thumb ... because you realize that there is no more resistance encountered ... and when the hand is in actual playing position. ...
    (rec.music.classical.guitar)
  • Re: Pull up resistor
    ... > Is there a rule of thumb on what the resistance should be for a pull ... low-power CMOS applications. ...
    (sci.electronics.basics)