Thermal compensation circuit

[aldovan]

Friends

I need a thermal compensation circuit for control the transistor Ic current.
Anyone have a simple circuit for this ?
I will put the sensor in the transistor TO-3 case.

Thanks,

Aldovan

 

[AndrewT]

Use the standard Vbe multplier.

 

[Giaime]

Take a look here:
http://paginas.fe.up.pt/~fff/eBook/MDA/Mult_Vbe.html
http://sound.westhost.com/amp_design.htm#thermal-stab
http://www.headwize.com/ubb/showpage.php?fnum=3&tid=5688

Also I suggest strongly reading this book:
http://www.dself.dsl.pipex.com/ampins/books/book.htm
(a whole chapter on thermal compensation and design!)