Good day
I am looking for some ideas to convert a 12v pwm signal to 6-9v analogue signal.
I need to drive a hydraulic proportional valve, where neutral is 0.5*udc and control range is 0.5*udc(6v) to 0.75*udc(9v).
The current draw of the control signal is 10W.
Doing a simple low pass filter will give me 0-12v which will only work if i limit my pwm signal to from 50% - 75% which will severely limit the precision i need(I assume). also the valve doesn't work with pwm directly. So I assume the only way to get it to work is to use a variable voltage regulator which limits can be adjusted using resistors and voltage can be adjusted using pwm, but this is where my expertise ends..
Edit: I forgot to add that pwm frequency is 490Hz.
I am looking for some ideas to convert a 12v pwm signal to 6-9v analogue signal.
I need to drive a hydraulic proportional valve, where neutral is 0.5*udc and control range is 0.5*udc(6v) to 0.75*udc(9v).
The current draw of the control signal is 10W.
Doing a simple low pass filter will give me 0-12v which will only work if i limit my pwm signal to from 50% - 75% which will severely limit the precision i need(I assume). also the valve doesn't work with pwm directly. So I assume the only way to get it to work is to use a variable voltage regulator which limits can be adjusted using resistors and voltage can be adjusted using pwm, but this is where my expertise ends..
Edit: I forgot to add that pwm frequency is 490Hz.
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