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1. 11:18 AM - Re: Rotary switch tank selection (Al Fuller)
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| Subject: | Re: Rotary switch tank selection |
My Austin Healey (like many old cars) had a very sensitive gauge that
fluctuated wildly
One fix for that is to install a super capacitor on the gauge end of the
circuit. Adding a relay keeps the energy in when the circuit is off and
makes for reliable reading immediately upon activation (otherwise the super
capacitor needs to charge up to provide an accurate reading, and also
slowly discharges after shutdown).
In your case you might need 3 each, but the whole setup was trivially
inexpensive. I would avoid putting the super capacitor where fuel vapor
could be present.
________________
Sent from my phone
Best Regards,
Al Fuller
On Fri, Oct 4, 2024, 12:41=AFAM Bob Verwey <bob.verwey@gmail.com> wro
te:
> I have three fuel tanks L - R - AUX
> I want to use one gauge to display the selected tank's quantity.
> On a similar installation I have seen, the one annoying characteristic of
> the setup is the fact that there is no damping of the needle movement whe
n
> you change tanks, leading to violent swings when switching tanks.
> Is there a simple way of eliminating this with some basic components adde
d
> to the switching circuit?
>
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