a small doubt.......amplification?

[b.adithya]

how to amplify a dc voltage of 4v to a 12v dc voltage?:?:

 

[fareen]

you can use a simple non-inverting opamp with gain of 3v/v

 

[alexxx]

Vout = Vin(1+R2/R1) and since Vout=3*Vin, that gives us R2=2*R1.

Check out the non-inverting amplifier circuit from the below link:

Operational amplifier applications - Wikipedia, the free encyclopedia

Hope that helped.

 

[b.adithya]

Vout = Vin(1+R2/R1) and since Vout=3*Vin, that gives us R2=2*R1.

Check out the non-inverting amplifier circuit from the below link:

Operational amplifier applications - Wikipedia, the free encyclopedia

Hope that helped.

Thanks boss..........