proportional valve controller

[aym_qunibi]

hi there
i want to design a proportional valve controller that when i give a signal 0-10volt or 4-20ma it outputs a high currrent 0-24volt to a proportional valve.
any one has any useful ideas, a tech document,... or website ?

 

[Btrend]

hi there
i want to design a proportional valve controller that when i give a signal 0-10volt or 4-20ma it outputs a high currrent 0-24volt to a proportional valve.
any one has any useful ideas, a tech document,... or website ?

hi,
u must elaborate on ur spec.
what is ur input ? "a signal 0-10volt or 4-20ma" ??
what is ur output ? "it outputs a high currrent 0-24volt " ?????
what is ur application ?
if possible, try to draw the block diagram with spec. , such that others can know what's ur imagination.

 

[IanP]

You haven't specified what current is required.
If you don't need more than 3A then you can employ switchmode voltage regulator, such as LM2756 ( **broken link removed** ) and connect your control voltage (through an opamp, to give you full range 0-24V) to the ADJ pin.
To achieve 0-24V range you will need small negative voltage ≈ -3Vdc and normal unregulated ≈+30V.
If this is what you are after let us know..
Regards,
IanP

 

[aym_qunibi]

thanx for your replies
my valve is 2amps with control signal of 0-10volts,but some valves which i saw also have a control signal of 4-20mA. :roll: