Spacewar! (was Re: Laser display...)

From: Stan Barr <>
Date: Mon Feb 21 02:55:47 2005


der Mous said:
> > (and yes, you can build useable audio amps out of 4000 series
> > inverters).
> I'm surprised they're linear enough. Or are you just designing under
> the assumption of infinite gain, depending on negative feedback to
> linearize things?

With some chips you can do that, setting the input bias by reference
to the output, the 4007 buffer was commonly used that way, making a
useful high-gain amplifier. 4000-series chips are useful in other ways,
the 4066 quad switch has found a new lease of life as a high performance
RF mixer, for example.

Stan Barr
The future was never like this!
Received on Mon Feb 21 2005 - 02:55:47 GMT

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