mfiio
Differences
This shows you the differences between two versions of the page.
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mfiio [2009/03/06 07:38] twdorris |
mfiio [2009/03/06 07:40] twdorris |
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| {{http://www.ecmtuning.com/images/forums/ecudocs/input-analog-pulldown.gif }} | {{http://www.ecmtuning.com/images/forums/ecudocs/input-analog-pulldown.gif }} | ||
| This is a 0-5v input to the ECU but with a pull down through some resistor. The implication here is that any voltage source (sensor) connected to this input will be expected to drive the load of that pull down. Some sensors simply can not do this. You can get more info on our [[ecuinputdata|ECU Input Data]] page. | This is a 0-5v input to the ECU but with a pull down through some resistor. The implication here is that any voltage source (sensor) connected to this input will be expected to drive the load of that pull down. Some sensors simply can not do this. You can get more info on our [[ecuinputdata|ECU Input Data]] page. | ||
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| ==== Input - analog w/pull up ==== | ==== Input - analog w/pull up ==== | ||
| {{http://www.ecmtuning.com/images/forums/ecudocs/input-analog-pullup.gif }} | {{http://www.ecmtuning.com/images/forums/ecudocs/input-analog-pullup.gif }} | ||
| - | This is a 0-5v input to the ECU but with a pull up to 5v through some resistor. | + | This is a 0-5v input to the ECU but with a pull up to 5v through some resistor. Which means when nothing is connected to this analog input, the ECU is going to "see" +5v. |
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| This is a 0-5v input to the ECU but with a pull down to ground **and** a pull up to +5v through some resistor combination. The implication here is that any voltage source (sensor) connected to this input will be expected to drive the load of that pull down. Some sensors simply can not do this. You can get more info on our [[ecuinputdata|ECU Input Data]] page. | This is a 0-5v input to the ECU but with a pull down to ground **and** a pull up to +5v through some resistor combination. The implication here is that any voltage source (sensor) connected to this input will be expected to drive the load of that pull down. Some sensors simply can not do this. You can get more info on our [[ecuinputdata|ECU Input Data]] page. | ||
| - | An example of this type of input would be a temperature sensor. | + | An example of this type of input would be a temperature sensor. Thermistors require this type of drive circuit. |
mfiio.txt · Last modified: 2024/03/15 11:16 (external edit)
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