DATASHEET LM7912 PDF

Views Read Edit View history. When you are designing an analog circuitthe circuit might need negative voltage either as a power source or as a reference voltage. For the years, see 8th millennium. You can also check on 78 series for positive voltage regulators.

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You can also check on 78 series for positive voltage regulators. When you are designing an analog circuit, the circuit might need negative voltage either as a power source or as a reference voltage.

In both cases will be an ideal choice when you need a negative 12V. The output current of this IC is upto 1A, however with appropriate heat sink the datasheet says that a peak current of 2. Meaning it will provide a constant output voltage of V when the input voltage is between A very basic Voltage regulator circuit is shown below. I have used a Battery to power the IC, but you can use any power source but notice that the supply voltage should be negative.

Hence, I have interchanged the polarity of the battery. The Input and output capacitors C1 10uF and C2 1uF are used to filter noise from the input and the output voltage respectively.

The negative output voltage is obtained from the Vo 3rd Pin which is also read using a Multimeter. The value of the capacitors need not be the exact values, you can use the closest value you have got.

There are many other ways in which the IC can be used based on your application. The circuit diagram for those can be found at the datasheet given at the end of this page. LM Applications Constant V output regulator to use as power or reference voltage for analog and digital circuits.

Current Limiter for certain applications Regulated Dual Supply.

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