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Topic: voltage regualtor (Read 449 times) previous topic - next topic

arduinoPi

I Just purchased this http://www.pololu.com/catalog/product/2111
It says it can out put 7 amps at 5 volts. I have it running off of a 12 volt lead-acid battery rated at 12 amps an hour.
I connected this to a load of 250 mA and the output voltage is 4.5 volts some of my devices are not working correctly, What can I do about this?

EHein

Just a thought, did you try jumping the VIN (+12 volts) into the ENABLE pin and measure the output, bypassing the pullup resistor and see if it makes a difference?  If not, you may have a defective board (polulu is good about exchanges).

PeterH


I Just purchased this http://www.pololu.com/catalog/product/2111
It says it can out put 7 amps at 5 volts. I have it running off of a 12 volt lead-acid battery rated at 12 amps an hour.
I connected this to a load of 250 mA and the output voltage is 4.5 volts some of my devices are not working correctly, What can I do about this?


Battery capacity is usually measured in Amp-hours (Amps times hours) not Amps per hour. Is your battery actually producing 12V? What is the input Voltage at the regulator?
I only provide help via the forum - please do not contact me for private consultancy.

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