I must be gettin really old. I read it and didn't even think twice about it till Jerry mentioned it.
Vince.
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On 03/07/2018 02:21 PM, Arv Evans wrote:
Jerry
Good catch...yes, I am an old geezer. Meant to say "emitters" but the
fingers
typed "cathodes" instead. Hopefully newer hams will understand.
Arv
_._
On Wed, Mar 7, 2018 at 11:31 AM, Jerry Gaffke via Groups.Io
<jgaffke@... <mailto:jgaffke@...>> wrote:
As per
<>
You're dating yourself with that cathodes thing.
But most of us are old enough to follow.
Jerry
On Wed, Mar 7, 2018 at 10:21 am, Arv Evans wrote:
Possibly use an op-amp for the audio pre-amp and follow it with
an NPN-PNP
pair. Feedback from the NPN-PNP cathodes to input of the op-amp
(with resistive
divider to set gain) and you have a composite replacement for
integrated audio
amplifiers.
--
Michigan VHF Corp.
