Hi, I have got a 7824 voltage regulator which I suspect to be faulty. The issue is I don't have a power supply which goes above 24V to check the regulator. Would I be able to get an idea whether the regulator is working by supplying 24V to the input?

 

A 24 volt input will probably produce a 21 volt output. You need at least 3 volts more then the rated output of the regulator for proper regulation.
SG

 

Thanks, just for future reference is there anyway to check a voltage regulator without supplying voltage, maybe 'ohming' it out. Most of what I found online instructs to supply the input voltage. Though I saw one video where someone was checking the resistance between pins. Was hard to understand - but is it a possibility?

 

You could probably spot sime defects like a short between input and output with practice but you would not be able to say for certain that the regulatir is good.

 

You could connect a battery in series with your power supply to get enough voltage to test the regulator.

 

1. The standard test is to using a power supply which the voltages is 24V+3V.
2. To buy 3 9 volts cookie batteries and the voltages as Vbat = 9.6V * 3 = 28.8 V without load.
3. To use the power supply that you have, if the power supply is adjustable then adjust the input voltages from the lowest to the highest to do the test and to see what will be happening.