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Majority gate with PBRL

A project log for AMBAP: A Modest Bitslice Architecture Proposal

Trying to unify and simplify a minimal architecture for various implementation technologies...

yann-guidon-ygdesYann Guidon / YGDES 09/24/2016 at 02:390 Comments

Still reading Dieter Müller's articles...

The idea of the majority gate designed with parallel resistors (or a crude DAC ?) is too tempting and I understand his fascination. Looking at this diagram:

This could be translated into ECL or resistor-relay logic almost directly !

Now the question is: could this work with my pre-biased logic cell and what is the value of the parallel resistors ?


20160925: Hysteresis would kill the design but all hope is not lost. Switching from a "DAC" to a "current adder" could be a solution. Diodes let the current go through one direction and this is great because the relay is mostly a current-driven device.

However, according to this log, the coil current must be >= 60mA to turn the relay on, and less than 25mA to turn it back off. The Hysteresis is way too high to make the current adder useful. Is there a way to reduce a relay's hysteresis ?

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