Hi,
Yes a timeout system is certainly one possibility.
Another possibility is a flashing LED.
Another possibility is a 'test' button mounted on the front
somewhere, the logic here being that the button has to be
pressed to complete the circuit to test ohms. Fairly simple,
and should be easy to do.
Another possibility is a beep. I was thinking that as there
are two batteries in the battery compartment, one hard to get,
and one easy to get, and there is a little room in there.
Maybe i could make a little beeping noise from the larger
single cell with one of those tiny noise makers, and trigger
it whenever current is drawn from the small expensive 15 volt
battery. That would need no external alterations to the unit
like LEDs or buttons.
Another possibility, but not an answer, is to use the little
12 volt batteries that cost £1:79p, and try not to cry too
much when it goes flat. The disadvantage here is that 12 volts
is right at the MAX on the adjuster pot. Now, i have yet to see
a diagram of the Avo, so i am not sure if i can ALTER something
(
shudder) to make it have at least some adjustment using a
12 volt battery. This so far is my favourite option.
Any suggestions, no matter how bizarre, will be welcomed and
treated with the absolute minimum of confidentiality.
Tansis,
As you probably know, the little 15v battery is only for the
higher ohms range, the other easy to get battery is for the
lower ohms range.
I had a reply from 'The Small Battery Company' they sent me
this in an e-mail:
https://www.smallbattery.company.org.uk/sbc_a220.htm
It looks like a direct replacement, but i have yet to check
the length, but it looks close enough to me.
I still think thats too much though, (money)
but you might be quite happy with it.
If i can get it to give a bit of adjustment using 12v,
then thats what i will do.
Regards, John