The datasheet specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input. The LM78XX series of three terminal regulators is available with several fixed output voltages making them useful in a wide range of applications One of these is. C Datasheet PDF Download – 3 Terminal Positive Voltage Regulator, C data sheet.
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C Datasheet, PDF – Alldatasheet
That is the current that flows from the input out of the GND pin the input current is the sum of the output current and the GND current. The maximum GND current is 8. So turn to the datasheet curves, and you’ll find these: The value datashee R17 is not shown because it is different for different regulator output voltages eg.
I understand your voltage divider is to limit U1 Vin to 25 volts. This will stabilize the input and output voltage’s.
This will help the LM maintain a stable output voltage even datashwet changes in load. To help even more replace R1 with 2 each 12 volt 5W zener diodes in series to lock the voltage at 24 VDC at pin 1 of U1.
C Datasheet catalog
Why c Voltage regulator drops the current if the current enters around 13mA to 7mA? The is a voltage regulator providing a 5V output, it needs some current to operate. Spehro Pefhany k 4 Sparky 11k 2 15 Sign up or log in Sign up using Google.
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