Hello All,
I am working on my Senior Design Project in College, and i have a bit of a quandry. I would like to make a circuit that will be either on or off, and respond to the changes in a rag's conductivity. I tried doing this with an H-Bridge, along with an LM319 op amp. I am trying to get the output of this circuit to power a 12 Volt ANCO windshield wiper fluid pump, which will put more moisture into the rag, thus decreasing the rag's resistance and shutting off the pump. the picture of my circuit is below.
I used an old 12V relay after all of this to send the full positive 12V through the motor, which works sometimes. I am not sure why it is so finnicky. does anyone have any improvements to this idea, or maybe different ideas altogether? thanks!
http://www.imgur.com/iBrYS
I am working on my Senior Design Project in College, and i have a bit of a quandry. I would like to make a circuit that will be either on or off, and respond to the changes in a rag's conductivity. I tried doing this with an H-Bridge, along with an LM319 op amp. I am trying to get the output of this circuit to power a 12 Volt ANCO windshield wiper fluid pump, which will put more moisture into the rag, thus decreasing the rag's resistance and shutting off the pump. the picture of my circuit is below.
I used an old 12V relay after all of this to send the full positive 12V through the motor, which works sometimes. I am not sure why it is so finnicky. does anyone have any improvements to this idea, or maybe different ideas altogether? thanks!
http://www.imgur.com/iBrYS
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