[sdiy] Re: RTL

[TIm Daugard]

> Here's a start on Ray Wilson's site. It's known as MML or "Mickey Mouse
> Logic". Really! These techniques still use an IC (74HC14 schmitt trigger
> inverter) but show you how to create several different types of gates with
> various diode and resistor combinations.
>
> http://www.musicfromouterspace.com/analogsynth/mmlogic.html

Actually, you can replace the IC with a transistor. Attached is a portion of a
circuit that uses the same principles. It has the advantage of working from any
supply. Total cost of the circuit show is about 50 cents.


Tim Daugard
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