Hello all,
I have been trying to determine which pins on a lm7805c I would use to measure input and output current usage.
The regulator has recently been getting very hot.
I am using it to regulate the voltage from a 12V 500mA wall adapter. The load I am trying to power with the regulator says it needs 800mA @ 5V. The regulator should be able to supply up to 1A if I read the datasheet correctly.
The concerning thing other than being very hot is that when I try to measure the current the regulator is using, my meter won't display the Amps it displays OF (over flow). My meter should be able to read up to 10A safely.
The pin configurations of the regulator are (1:input)(2:GND)(3utput)
I have been placing my meter between the +12V and the (1:input) pin.
Am I measuring in the wrong spot ?
LINK TO DATASHEET LM7805C
PS: I have been using this setup for a while now without issues. The fact that I can only supply 500mA of current for the load just means it charges a little slower. The overheating is a new development
I have been trying to determine which pins on a lm7805c I would use to measure input and output current usage.
The regulator has recently been getting very hot.
I am using it to regulate the voltage from a 12V 500mA wall adapter. The load I am trying to power with the regulator says it needs 800mA @ 5V. The regulator should be able to supply up to 1A if I read the datasheet correctly.
The concerning thing other than being very hot is that when I try to measure the current the regulator is using, my meter won't display the Amps it displays OF (over flow). My meter should be able to read up to 10A safely.
The pin configurations of the regulator are (1:input)(2:GND)(3utput)
I have been placing my meter between the +12V and the (1:input) pin.
Am I measuring in the wrong spot ?
LINK TO DATASHEET LM7805C
PS: I have been using this setup for a while now without issues. The fact that I can only supply 500mA of current for the load just means it charges a little slower. The overheating is a new development
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