Hello,
I have a circuit that I am trying to add more protection too. However, I really only know the basics of circuit design and this is a little over my head.
I have an ATMEL microcontroller operating my board. I also have 12 inputs to this controller. These inputs are origonally 24VDC coming from the output card of a PLC rack. The 24VDC is then regulated down to 5VDC through a resistor divider circuit.
There is a chance that the input voltage to the resistor divider is over 24VDC. Once it gets to 26.5VDC, there goes the microcontroller... so i'm looking for someway to keep a stable 5VDC to the microcontroller no matter what the input voltage is (say 23 to 30?). I appreciate the help!
I have a circuit that I am trying to add more protection too. However, I really only know the basics of circuit design and this is a little over my head.
I have an ATMEL microcontroller operating my board. I also have 12 inputs to this controller. These inputs are origonally 24VDC coming from the output card of a PLC rack. The 24VDC is then regulated down to 5VDC through a resistor divider circuit.
There is a chance that the input voltage to the resistor divider is over 24VDC. Once it gets to 26.5VDC, there goes the microcontroller... so i'm looking for someway to keep a stable 5VDC to the microcontroller no matter what the input voltage is (say 23 to 30?). I appreciate the help!