Re: Digital panel meters with VCC < 5V?

On Sat, 09 Jul 2005 17:05:09 GMT, Joerg
<notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote:

>Hello Folks,
>
>Just happened again: A design needs a digital panel meter to display a
>voltage. Something in the usual $35 range. Problem is that Vbat must be
>allowed to drop to 5V or a tad less and that is also the supply of the
>usual panel meter. They seem to come only in 5V, 9V and 4-20mA loop for
>their supply. The loop versions cost a lot more. Sure, I could generate
>5V, 9V or whatever but it's a hassle.
>
>Is there any mainstream (non-expensive) digital panel meter that can
>live with less than 5V? I mean, there are plenty of handheld meters out
>there that use a couple AA cells. It just wouldn't be practical to
>disect these and try to mount them into bezels or cutouts.
>
>Regards, Joerg
>
>http://www.analogconsultants.com


Try http://www.lascarelectronics.com/data/pdf/SP%20200.pdf - the spec
*** says the Vcc is 3.5 - 5.25 volts _and_ one side of the measured
voltage can be connected to the power supply ground (I've just bought
two of these from Newark, but haven't actually put them in service
yet...)(they are based on a Maxim MAX 138)



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Peter Bennett, VE7CEI
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