[sdiy] Daffy CMOS ASCIImatic

[René Schmitz]

Hi Scott!

If you run the analog out into a load that is connected to 
half the supply voltage it could work. I'd try yet another 
invertor with a feedback resistor (or maybe an opamp), and 
tie the analog output directly to the input. 

Cheers,
 René

At 18:05 28.04.02, Scott Gravenhorst wrote:
>I thought a picture might be worth some words....
>
>            100 K               100 K
>  cv 
>  o--+--/\/\/\/\/-----+------/\/\/\/\/-----+
>     |                |                    |
>     |                |     |\             |
>     |                |     | \            |
>     |                |     |  \           |
>     |                +-----|   >O---------+
>     |                      |  /           |
>     |         4007 CMOS    | /            | 10
>     |          inverter    |/             | 
>     |                                  -------
>     |                               11 -  -  - 12
>     |             analog               |  |  |       analog
>     |               in    >-------+----+  v  +----+--> out
>     |                             |               |
>     |                             |               |
>     |                             +----+  |  +----+  
>     |                                  |  v  |
>     |                                4 -  -  - 5
>     |                                  -------
>     |                                     |
>     +-------------------------------------+ 3
>                                 Transistors from 2nd 4007.
>
>=========================================================  
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>
>-- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
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