Testing

You can't:-

Exept for maybe the simplest of 'integrated ciruit' like a 7805 voltage regulator (which only has 3 legs) might reveal something about it's health with a multimeter test...

Or maybe an opto-isolator... which is little more than an LED and a phototransistor.

What is generally accepted as an IC e.g at least 8 legs isn't going to be testable with a multimeter.

If you really want to try, maybe a simple ohms check across the supply pins may reveal any completely blown chip?

Del

You can't test an IC using a Multimeter only but you can build a basic IC tester

http://www.geocities.com/dsaproject/electronics/ic_tester/ic_tester.html

Smart_Viral

Well, there is a way but it's tedious.

Decades ago, I read an article in a magazine (can't remember which). You take a good IC and read the resistances from the ground pin to the other pins. Then you read the resistances from the V+ pin to the other pins. What you get is a table of resistances for a good IC.

If you have a suspect IC, all you do is read all the resistances and compare them to the table that you have for that IC. A difference of, say 5%, makes it suspect.

Works fine for ICs with 8 pins, it gets a little involved with 14 to 16 pins, and downright time consuming with 40 pin microprocessors! However, I did amass a file for about 40 ICs back then. This soon gave way to testing using logic probes and oscilloscopes. That file went into the dustbin eventually.

Dear Friend,

I do know the best tools available for the testing and measurement and for the maintainance of the motor for lifelong period. I have my firm for the transformer repair and winding in maharashtra.

Rishabh Instruments, a nasik based company, i suppose, is the worlds leading manufacturer of the Analog panel meters and it is also engaged in manufacturing of the digital instruments for easing the daily tasks of people like us.

Now i have herd that they are representing Gossen Metrawatt of Germany and METREL of Slovenia for the marketing and servicing of the same in India.

I have found the websites of all the three companies and i am glad to tell you they are:

www.rishabh.co.in

www.gossenmetrawatt.com

www.metrel.si

I have bought the multimeter from this company and i was amazed with the performance of the same. Rishabh provides a very wonderful after sales service for all its instruments and now i came to know why they claim "German Quality products at Indian prices". Isnt that wonderful. I have ccordinated with a lady there at marketing@rishabh-instruments.com and spoke to her on 02532202160 when i had purchased the meter.

Have a nice time...