amplify current from milli-amp to amp

Thread Starter

naumandar

Joined Jan 19, 2009
8
i have designed a circuit for dc to dc current and my output current is in mili's and i want 3.5 Amp at output.. i don't want to use transformer bcoz of high losses..
 

beenthere

Joined Apr 20, 2004
15,819
Can you post up your circuit? If your input source can supply around 5 amps, this should be possible with a boost converter.
 

SgtWookie

Joined Jul 17, 2007
22,230
Post a schematic diagram of your circuit.
Realize that even if your circuit is 80% efficient, to boost up to 19.5v at 3.5A, over 8.5A at 10v will be required.
 

Skeebopstop

Joined Jan 9, 2009
358
Darlington transistor driven into saturation could give you some pretty heavy duty current amplification. You'll have to bias it properly if you require a more exact output.
 
Top