[sdiy]EDN: Shift-register based Quadrature oscillator

[rdrake]

Hmm, this looks interesting...  why didn't we think of that?


Shift registers and resistors deliver multiphase sine waves
This simple method uses only digital logic and fixed-value resistors.

Sine waves with fixed phase relationships find application in communications equipment, instrumentation, and power sources. Although you can use any of several traditional analog techniques to generate basic sine-wave signals, this Design Idea offers a simple method that uses only digital logic and fixed-value resistors...-- EDN, 4/13/2006 

http://www.edn.com/article/CA6321527.html?spacedesc=designideas&industryid=44217