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Re: Trouble With A Very Simple MOSFET Amplifier

Subject: Re: Trouble With A Very Simple MOSFET Amplifier
From: default
Date: Thu, 17 Aug 2006 16:45:55 -0400
Newsgroups: sci.electronics.basics
On Thu, 17 Aug 2006 13:32:38 +1000, "Phil Allison"
<philallison@xxxxxxxxxx> wrote:

>
> Is the 2n7000 not the right choice for this circuit?
>
>
>**  No  - it is not a  " power mosfet".
>
>     Try something in a TO220 pack.

This is a little milliwatt amp intended for a 9 V battery a 2N7000 is
probably good.  A single ended class A with the speaker in the circuit
is not going to want a high DC offset on the speaker . . . for that
one needs a transformer, or resistor (or constant current source)
replacing the transformer and a large electrolytic to couple to the
speaker.

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