0 - 10V from a 0 - 5V

[Gigillo74]

0 to 10v from 0 to 5 volt design

Hi guys,
i need a circuit that can supply a voltage of 0-10V proportionally to input vltage 0-5V (like x2 multiplier) with maximum linearity at ratings of 50-100mA.
Can someone can help me?
Maybe OP-AMP are suitable for this operation?
Thanks.
Luigi.

 

[Prototyp_V1.0]

from 0..5v to 0..10v

...
Maybe OP-AMP are suitable for this operation?

Yes. A non-inverting amplifier that multipe input voltage by 2 should be a good choice.

The two resistors values in atached chematic should be equal. Then it multiple by two.

 

[Gigillo74]

design 10v to 5v

Thanl you very much.
It seems like i'm looking for!
But only one thing:
how i can use this for higher current like 100mA?
Thank You.
Luigi.

 

[Prototyp_V1.0]

0...10v

Thanl you very much.
It seems like i'm looking for!
But only one thing:
how i can use this for higher current like 100mA?
Thank You.
Luigi.

One common way is to add a simple current amplifier on the opamps output. Together with the opamp, you can reat it as a whole as a opamp that is capable to provide more current. Notice that the fedback is taken from the output of the transistor bridge, and not the opamp itself.

 

[haker_fox]

0-10v opamp

I also recommend to use rail-to-rail op amp like mcp601. But it's ouptut is Vss + 10 mV to Vdd - 10mV.

 

[AdrianN]

multiple 0-10v dc circuit

One common way is to add a simple current amplifier on the opamps output.

... or you can use a 50mA capable Op Amp like the Analog Devices' AD817. 50mA output is minimum. It can do more. Careful with the power dissipation though.

 

[Gigillo74]

opamp 0-10v 5v

Thank you for all reply and suggest.
I think the solution with ad817 is better than two transistor for circuit simplification.
Thank you againg.
Luigi.