Hi, Ok I tired your method and it worked. I ended up needing around 24 ohms. The only concern I have is that the resistor runs a bit warm and it's a 20 watt. (Actually two 50 ohm, 10 watt resistors in parallel) I measured the voltage drop across them and got 9.6 volts. (taken with the sending unit grounded to simulate an empty tank.) I should have measured the resistance of the gauge... I'm concerned about the damaging the sending unit.. should I be?
On Sunday, November 17, 2013 9:57:20 PM UTC-5, orange_glow_fan wrote: > > Electronic design is not my strong suit so I thought I ask if someone here > could offer some advice.. I'm not even sure if this is possible. > > I need to make a fuel tank sender and it's gauge compatible. The gauge is > expecting to see a sender (basically a variable resistor) that has a value > 0 to 90 ohms. The current sender in the tank has a value of 0 to 30 ohms. > The original gauge, changed long ago is NLA and while an appropriate sender > is available, changing it is going to be an issue. > > I was hoping for a simple circuit that would accomplish this. It would > have to be slightly adjustable and not affected by the supply voltage that > vary by several volts depending on the battery load and charge condition. > > Thanks, > > \Kerry > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/8632564f-bde0-4b11-92aa-3d4ea862741a%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
