Even with some previous help, I still have a question about damping the needle movement of a gauge using a parallel RC circuit.
My goal is to slow down the movement of the gauge as the car stops, starts and goes around corners.
Attached is a schematic of the gauge circuit. The gauge is basically a calibrated voltmeter.
At Full the resistance is 10 ohms. At Empty it is 73 ohms. The battery has an average voltage of 12.65. Amperage is between 0.157 and 0.60 across the range of motion.
If I want T = 5 seconds
Q1. Where is the best location to install the capacitor? Across the variable resistor?
Q2. With a relatively low current flow, am I better off to go with a larger cap (1000mF) and smaller resistor or a smaller cap with a larger resistor to get T = 5?
Q3. Do I even need a resistor at all - other than the existing varistor?
Q4. An entirely different and better method?
Again, my goal is to slow down the movement of the gauge so that it, in effect, averages the reading of the last 5 seconds or so?
My goal is to slow down the movement of the gauge as the car stops, starts and goes around corners.
Attached is a schematic of the gauge circuit. The gauge is basically a calibrated voltmeter.
At Full the resistance is 10 ohms. At Empty it is 73 ohms. The battery has an average voltage of 12.65. Amperage is between 0.157 and 0.60 across the range of motion.
If I want T = 5 seconds
Q1. Where is the best location to install the capacitor? Across the variable resistor?
Q2. With a relatively low current flow, am I better off to go with a larger cap (1000mF) and smaller resistor or a smaller cap with a larger resistor to get T = 5?
Q3. Do I even need a resistor at all - other than the existing varistor?
Q4. An entirely different and better method?
Again, my goal is to slow down the movement of the gauge so that it, in effect, averages the reading of the last 5 seconds or so?
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