Need an Expanded scale volt meter cct

Thread Starter


Joined Jun 6, 2007
The meter on my mobility scooter sits at 26v even when the batteries are dead flat, the driver has died is my guess.
I'm looking for a schematic for a 4 to 6 Led read out covering 22v to 26v or there abouts or perhaps a drive cct for an LCD meter covering the same range.
Building it won't be a problem my son & I both have Assoc Dip in electronics.
If anyone can point me to a circuit, it would be much appreciated.
Cheers Damien.

David Bridgen

Joined Feb 10, 2005
Not exactly an answer to your particular requirement. i.e. using l.e.ds, but I once made an expanded scale voltmeter by sticking a 10V zener in series with a milliameter and multipier R to measure from 10 to 16V for a garage mechanic.