ther-man APOLOGIES

[inman at interpath.com]

inman at interpath.com wrote:
 
> 1)  4049 chip.  Hex Inverter.  NOT Hex Inverting buffer.
> 2)  Don't use a CMOS version of the 4049.  9 volts will blow the chip.
>         CMOS likes a steady 5 volt supply.      

WOW!  How wrong can I get in one e-mail!

YOU DO want the HEX INVERTING BUFFER  4049.
AND YOU DO WANT the CMOS version of the chip.  The TTL version will blow.

When I tried this a year ago, I used a TTL 7405, a 14 pin HEX Inverter,
thinking I could re-wire it.  THAT was my problem!  

I breadboarded this with the 4049 using a 5 volt supply and it made some
interesting sounds.

Where in the hell is the Unsend key on this computer?

Time for Bed,

Elliot "Hex Inverted Brain"