chaitanya2k6er
Junior Member level 3
hi everyone..
I got stuck up at designing a constant current source. Actually what i need is a constant 0-5amp variable current source. What i am planing is, to use a programmable current source LT3092 and to boost the current to 0-5Amps as required. I got confused in using the darling ton pair for boosting the current!! It is known that current gain is equal to Ic/Ib. Ib is known and the value of beta is not constant (i.e dependent on the current drawn from the collector of transistors). So the system will not be linear. I have attached the rough sketch. And is this the correct way to use for the constant current source. So can some one suggest me how to use a darling ton pair for this purpose.
Regards,
Chaitanya.
I got stuck up at designing a constant current source. Actually what i need is a constant 0-5amp variable current source. What i am planing is, to use a programmable current source LT3092 and to boost the current to 0-5Amps as required. I got confused in using the darling ton pair for boosting the current!! It is known that current gain is equal to Ic/Ib. Ib is known and the value of beta is not constant (i.e dependent on the current drawn from the collector of transistors). So the system will not be linear. I have attached the rough sketch. And is this the correct way to use for the constant current source. So can some one suggest me how to use a darling ton pair for this purpose.
Regards,
Chaitanya.