Fuel Guage Anti-Sloshing Circuit
Fuel Guage Anti-Sloshing Circuit
(OP)
I am looking for a circuit that will provide the fuel gauge with a delayed reading. Several new cars have this and I was wanting to build one for my car. The one I have heard of are based on an opamp and a few transistors. They normally have 4 wires. This is to keep the fuel guage from eratically jumping around.
1.)Voltage in: Normally 10-12 volts DC
2.)Input from fuel sender: Range 0-90ohms 0=empty 90=full
3.)output to fuel gauge
4.)Ground
If anyone could help me with a circuti for this I would appreciate it.
1.)Voltage in: Normally 10-12 volts DC
2.)Input from fuel sender: Range 0-90ohms 0=empty 90=full
3.)output to fuel gauge
4.)Ground
If anyone could help me with a circuti for this I would appreciate it.





RE: Fuel Guage Anti-Sloshing Circuit
RE: Fuel Guage Anti-Sloshing Circuit
RE: Fuel Guage Anti-Sloshing Circuit
RE: Fuel Guage Anti-Sloshing Circuit
RE: Fuel Guage Anti-Sloshing Circuit
Remember: the advantage of a 'real time' fuel gauge is that when your tank is almost completely empty, you can stomp on the brake and look for the fuel slosh on the gauge. With a low pass filtered gauge, you lose that reserve! (grin)
RE: Fuel Guage Anti-Sloshing Circuit
three in series is 1f at 15v and three in paralell is 3f at 5v, or have I forgotten how they add?
RE: Fuel Guage Anti-Sloshing Circuit
The break frequency (the frequency at which the output is reduced by 3dB or approximately 50%), is 1/RC.
There's LOTS of information on RC filters available all over the net.