Subject:
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Re: New 3-Input Multi-function Pneumatic Logic Gate
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Newsgroups:
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lugnet.technic
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Date:
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Tue, 6 Sep 2005 19:18:28 GMT
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Viewed:
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3766 times
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In lugnet.technic, Mark Bellis wrote:
> Here's my latest pneumatic logic gate with differential inputs and outputs.
>
> This one has 4-switch reversers to make it configurable for almost any
> combination of inputs. Replace the reversers with permanently swapped hoses
> when you have the function you want.
>
> It uses two of Kevin's 4-switch AND modules.
>
> You can make the output go high in 1, 3, 5 or 7 of the eight combinations of
> inputs A, B and C. A table shows which combinations of reverser settings do
> what.
>
> http://www.brickshelf.com/gallery/mbellis/Technic/Pneumatics/Building-Blocks/pneumatic_3_input_multi_function_gate_circuit.jpg
>
> PLMKWYT
>
> Mark
Mark,
Aren't Reversor R1 and Reversor R4 redundant? R1 can reverse the A input,
which drives a piston which controls a switch, who's output is reversed by R4.
I see no reason for the piston and switch between R1 and R4, unless you are just
showing that something has to be feeding the rest of the circuit.
The differential pair coming out of R4 are merely delayed versions of A or
inverted A, right? There is no real computing happening there.
Kev
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Message has 1 Reply:
 | | Re: New 3-Input Multi-function Pneumatic Logic Gate
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| (...) Yes, R1 and R4 are redundant as shown in the table notes :-) The idea was to start with A, B and C all being either differential inputs or switch positions. The use of a switch for A means that its input is buffered to the gate output, (...) (19 years ago, 6-Sep-05, to lugnet.technic)
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Message is in Reply To:
| | New 3-Input Multi-function Pneumatic Logic Gate
|
| Here's my latest pneumatic logic gate with differential inputs and outputs. This one has 4-switch reversers to make it configurable for almost any combination of inputs. Replace the reversers with permanently swapped hoses when you have the function (...) (19 years ago, 6-Sep-05, to lugnet.technic)
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