- #1
TxAggie00
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Hello all!
I do not pretend to have any knowledge of electrical engineering, just enough to get myself in trouble and blow up some transistors. That being said, I have a question for the experts.
My recent hobby project requires my computer software (my area of expertise) to interface with a microcontroller. What I am trying to do is plot the voltage change in batteries as they are being charged and discharged. Sitting there with my fluke for 6 hours doesn't intrigue me, so I am trying to "automate" the process. The charger has an output rating of up to 24V and 1.5 amps. I am using a Parallax bs2px for the microcontroller and an ADC0834 4-channel ADC for voltage sensing. How can I monitor the batteries with that ADC and not put too much current through it? Do I need to isolate that part of the circuit? If so, how? I have read through the datasheet for the http://www.national.com/mpf/DC/ADC0804.html#Overview" , but it might as well be written in latin. I do know that I am going to need a 5:1 voltage divider, because my Vref is 5V.
Any help is appreciated! Thanks,
Scott
I do not pretend to have any knowledge of electrical engineering, just enough to get myself in trouble and blow up some transistors. That being said, I have a question for the experts.
My recent hobby project requires my computer software (my area of expertise) to interface with a microcontroller. What I am trying to do is plot the voltage change in batteries as they are being charged and discharged. Sitting there with my fluke for 6 hours doesn't intrigue me, so I am trying to "automate" the process. The charger has an output rating of up to 24V and 1.5 amps. I am using a Parallax bs2px for the microcontroller and an ADC0834 4-channel ADC for voltage sensing. How can I monitor the batteries with that ADC and not put too much current through it? Do I need to isolate that part of the circuit? If so, how? I have read through the datasheet for the http://www.national.com/mpf/DC/ADC0804.html#Overview" , but it might as well be written in latin. I do know that I am going to need a 5:1 voltage divider, because my Vref is 5V.
Any help is appreciated! Thanks,
Scott
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