555 EFI

[Bruce Plecan]

-----Original Message-----
From: Raymond C Drouillard <cosmic.ray at juno.com>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Saturday, January 16, 1999 8:44 PM
Subject: Re: 555 EFI

OK, I found a diagram for a summing amp, but is uses a dual polarity
power source, anyone got a clue for how to do a summing amp with
just +5v power supply?.  Or can it be done with a single?.
Bruce


>Use a pair of resisters as a voltage devider to reduce it to a 0-1.667
>volt signal, then use an op-amp adder to add it to a steady 3.333 V
>level.  You can find the diagram for a voltage adder (summing amplifier)
>in any book on op-amps.
>
>Ray Drouillard
>
>
>On Sat, 16 Jan 1999 10:12:26 -0500 "Bruce Plecan" <nacelp at bright.net>
>writes:
>>Hmm, would someone who has some EE under their belt e-mail
>>me or respond to:
>>
>>How would someone convert a 0-5v signal to a 3.333-5v signal
>>using a 324?.  Or is this the "killer".
>>Cheers
>>Bruce
>>
>>
>
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