TI-H: Reading 12 volt pulses

TI-H: Reading 12 volt pulses

• To: TI Hardware <ti-hardware@lists.ticalc.org>
• Subject: TI-H: Reading 12 volt pulses
• From: David Knaack <dknaack@genesis.genetech.net>
• Date: Tue, 13 Jun 2000 11:36:35 -0500 (CDT)
• Reply-To: ti-hardware@lists.ticalc.org

From: <tonypowell@att.net>
> What would be the simplest way to count 12 volt pulses 
> with my '86?  I believe the link is not analog so I 
> would think it'd have to be some sort of external 
> hardware setup.

An optoisolator would work, its essently an led and
photosensitive transistor together in a single chip.
They are good for isolating your electronics from
the 'real world' while safely receiving input signals.
Even if there is an overvoltage on the input side
the calculator will be protected.
 
dk

• Re: TI-H: Reading 12 volt pulses
• From: Grant Stockly <gussie@stockly.com>

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