Voltage Regulator
Posted August 10, 2009
By admin
What is the internal resistance of AN7812 voltage regulator?
i am making a 12V DC power supply and the voltage regulator that i am using is always heating up after about 5 minutes of operation. my problem is that i can't calculate the DC voltage input to the regulator since i don't know the reistance of my voltage regulator. we are required to use calculations to determine the input voltage to the voltage regulator.
Have you rectified and filtered effectively before the regulator?
Un-regulated and filter supply can cause the regulator to work harder than it should.
G
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