alfuller194(at)gmail.com
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 Posted: Sat Oct 19, 2024 10:18 am Post subject: Rotary switch tank selection |
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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.
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Best Regards,
Al Fuller
On Fri, Oct 4, 2024, 12:41 AM Bob Verwey <bob.verwey(at)gmail.com (bob.verwey(at)gmail.com)> wrote:
| Quote: | 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 when you change tanks, leading to violent swings when switching tanks.
Is there a simple way of eliminating this with some basic components added to the switching circuit?
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