EH11A VOLTAGE REGULATOR PDF
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The LM is a voltage regulator is rated to output 5 volts, so we should read this output. To test the voltage going into the voltage regulator, we take a multimeter and place it in the DC voltage setting. Measuring the Input Voltage Regilator testing the voltage of a voltage regulator, we first check the voltage from the input pin to ground. So we’ll now go through specifically how to regulatof a voltage regulator.
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Before we get into how to read the voltages with a multimeter, first we’ll go over the pinout of a voltage regulator, so that you’ll know which pins to read voltages from. This is why we do this test. This is normally volts higher.
Measuring the Output Voltage Now that this step is complete, we now read the output voltage. A voltage regulator is a device that takes in an input voltage and regulates it down to the voltage that it is rated for. If the regulator isn’t receiving sufficient voltage, of course it will not be able to output its rated regulated voltage. The DC voltage setting is the setting of the multimeter that has the following symbol or sign.
We should now read a voltage at or about the rated voltage that the regulator is designed for. Being that a voltage regulator passes out a regulated output voltage, the only test we must do to check a voltage regulator is a voltage test.
The ground pin is pin 2. And the regulated output voltage comes out from pin 3 Output. If we don’t read the correct voltages, then more than likely it is a defective regulator. All a user must do is calculate the output that the regulator should output and perform the same test as is shown above to regulattor whether it is good or defective.
EH11A View Datasheet(PDF) – Diodes Incorporated.
If the multimeter does read a voltage near its rated output regulatkr, the voltage regulator is functional and is good. Unlike fixed voltage regulators, adjustable regulators can be regulated to output adjustable voltages. As an example, we’ll use the popular voltage regulator, the LM How To Test a Voltage Regulator A voltage regulator is a device that takes in an input voltage and regulates it down to the voltage that it is rated for. We take the probes of the multimeter and place the positive probe normally the red probe on the input pin of the voltage regulator and the negative probe normally black probe on the ground pin.
EH11A Datasheet PDF – Diodes Incorporated.
If the regulator is rated to output 5 volts, then we should read a voltage very near 5 volts coming out from its output.
If we read at the input pin the voltage which we feed into the regulator and read at the output pin the output voltage which the regulator is rated for, then we know that the voltage regulator is good. We check the voltage input into the voltage regulator and the voltage output from the regulator. An adjustable regulator can be tested in the same way.
The voltage that we should read should be higher than the voltage the regulator is rated to output. If we do not, then the voltage regulator is defective, as it does not do the job it was designed for, which is output a regulated voltage. If we read a higher voltage, then the voltage regulator is receiving sufficient voltage to regulate down.
The input voltage that needs to be regulated down goes into pin 1 Input. Below is the pinout of the LM voltage regulator: To measure the output voltage, we place the same multimeter set in the DC voltage setting and now place the positive probe of the multimeter on the output pin of the regulator and the voltagf probe on the rehulator pin of the regulator. This is to make sure that voltage is, in fact, being supplied to the regulator.