[chbot] .5 offset voltage

[jimmy allen]

Hi Wallace

Could you maybe use a schottky diode or two to drop the 0.5V?
Does the meters ground have to be above the transducers ground?
As you could drop 0.5V between the sensor and the meter i.e. 0-4V seen
by the meter.

Jimmy

On 7/17/11, Marshland Engineering <marshland at marshland.co.nz> wrote:
> I have a 5 volt transducer and I need to measure the output. The problem I
> have is the display and transducer both run off the same power supply  (12
> volts) but the transducers outputs range is 0.5 to 4.5 volts. The LED
> meter's input is not free floating. How do I get the meter ground to be 0.5
> volts above the transducer ground. As it is an LED meter, the current will
> vary quite considerably with the number of segments displayed so a simple
> dropper resister will not do ?