Re(2): Circuits by MK Berry

[Tony Allgood]

Lets start on page 44. S3 is terrible. Inputs should never be connected to
outputs. When S3 is closed IC3d drives the input clock. Also, IC3a will
race with other input to IC3b. I didn't try the gate delay bit.

Page 46 is standard. BUT IC8 cannot be used like that. Hey, the boy built a
comparator. Best make IC8 a voltage follower. Take the input pd from the
pointed ends of all the diodes and take the other end of R16 to ground. Or,
replace the diodes with 100k resistors and feed into a virtual earth
summing point.

Remember, to keep your +5volt stable, otherwise tuning can go horrible. Its
a nice idea to have a reset to step one switch. Use a push switch to take
the RESET pin high. But use an OR gate or two diodes and a pull-down. It
should then work atreat.

Remember, analogue sequencers can make nice waveform generators when used
with a very high VCO clock input. Mind you, its not as fun as walsh
functions!!

Tony

No wise cracking signature yet.