That last circuit won't work because the op-amp can't drive negative when only powered by +13.8 volts.
So, here's my latest attempt. Isn't there ANYBODY who is willing to analyze it tell me if it will work?
I was finally able to measure the voltage across the motorcycle's gas gauge sending unit.
Ohms Volts
10 --- 5.85
20 --- 6.23
40 --- 7.00
70 --- 7.99
100 -- 8.80
150 -- 9.83
175 -- 10.25
200 -- 10.65
215 -- 10.85
The gauge I want to add produced the following voltages:
Ohms Volts
10 --- 0.40
20 --- 1.33
30 --- 1.92
40 --- 2.52
50 --- 2.94
60 --- 3.24
70 --- 3.50
Here's the circuit to convert the higher voltages to the lower ones.
Jack
So, here's my latest attempt. Isn't there ANYBODY who is willing to analyze it tell me if it will work?
I was finally able to measure the voltage across the motorcycle's gas gauge sending unit.
Ohms Volts
10 --- 5.85
20 --- 6.23
40 --- 7.00
70 --- 7.99
100 -- 8.80
150 -- 9.83
175 -- 10.25
200 -- 10.65
215 -- 10.85
The gauge I want to add produced the following voltages:
Ohms Volts
10 --- 0.40
20 --- 1.33
30 --- 1.92
40 --- 2.52
50 --- 2.94
60 --- 3.24
70 --- 3.50
Here's the circuit to convert the higher voltages to the lower ones.
Jack
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