[sdiy] Logic to +/-5V conversion

[Jason Tribbeck]

I would've thought something like an RS232 transceiver - ISTR that while
it's normally +/-12V, some laptops did +/-5V instead.

Although just doing a quick check of the RS232 transceivers, and it's +/-7V
for all of the ones I have datasheets for.

On Sat, 21 Nov 2015 at 07:29 <rsdio at audiobanshee.com> wrote:

> Why choose a current mode (Norton) amplifier, like the LM3900 or LM359?
> Sure, they allow the input voltage to exceed the supply, but in this case
> we need the output voltage to exceed the input voltage, at least on the
> negative side.
>
> Brian
>
>
> On Nov 20, 2015, at 8:19 PM, Paul Perry <pfperry at melbpc.org.au> wrote:
> > But back in The Day, this was a job for the LM3900.
> >
> > paul perry Melbourne Australia
> > ----- Original Message ----- From: "Tim Ressel" > I'd like to take
> several 0-5V digital lines and make them swing +/-5V. I
> >> can do it with op amps, but is there a clevererer way?
> >
>
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