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Compiler/TL494: TL494C

Part Number: TL494

Tool/software: TI C/C++ Compiler

Dear Sir,

We are manufacturer of Co2 Laser Machines.

In our Machine One High Voltage Power Supply Used.

We are Making this power supply.

In this power supply so many components used. one piece IC if Your Company used TL494C

We have buy two type of IC of your company one from Mumbai & other from china.

our power supply work if we use IC which we bought from china & didn't work if we use IC which we bought from Mumbai.

I want to show you both 

complete Text on chines IC is as below

5CC50RK   G4

TL494C

Complete text on IC which we bought from mumbai is as below

68A6E7M

TL494C   G4

Please guide me why my power supply working with one IC & why didn't work with second IC Both IC Belongs to your Company.

One more Request from where i can get in India this IC     

5CC50RK   G4

TL494C

Please Guide & Support My mobile No. is 0091 9829585264