Fw: simple schematics

[Magnus Danielson]

From: KA4HJH <ka4hjh at gte.net>
Subject: Re: Fw: simple schematics
Date: Sun, 9 Jan 2000 19:03:54 -0500

> >I would recommend using a different
> >noise circuit, as the MM5837 noise has (for me...) a very apparent
> >repetitive nature, due to an internal shift register which is not long
> enough.
> 
> Only 17 bits. If you're going to build one from discrete logic you 
> might as well go for 32. This was in Electronotes.

In "The Art of Electronics" they say that the MM5437 is a 23 bit register
device tapping at bit 18. They also say that the internal clock run at about
160 kHz.

Doing both 35 and 39 is done by using 2 CMOS shift registers and any spare XOR
gate available. That part of the curcuit goes in the el cheapo department.
Some filtering and output curcuit is needed as well as some clock.

Cheers,
Magnus