Hi All I was planning to put a line driver on the position voltage output of my vbb style sensor. Currently I run it directly about 40' to my house but I think it affects the triple feedback circuit. The simple way is to put a non-inverting follower at the circuit output. The question is (lets see if I can explain this) the non-inverting opamp on the velocity output of the sensor has a small resistor between the output of the opamp (~10 ohms) and the line going back to the negative opamp input and a small (pf) capacitor between the opamp output and the negative input . I think this is for damping high frequency oscillations. Should I use this with the unity gain follower? I'm not sure if its necessary or how to do this. The only way I can think of is to put a high resistor (~100k) before the positive opamp input and a 100k in the line going back to the negative input and then put the small cap and resistor as noted above. I'm not sure that this will acomplish anything. I didn't want to have a voltage divider before the non inverting opamp to reduce the voltage in half and then have a 2X noninverting opamp line driver. I think the voltage divider will affect the current flow to my feedback coil. Regards BarryHi AllI was planning to put a line driver on the position voltage output of my vbb style sensor. Currently I run it directly about 40' to my house but I think it affects the triple feedback circuit. The simple way is to put a non-inverting follower at the circuit output. The question is (lets see if I can explain this) the non-inverting opamp on the velocity output of the sensor has a small resistor between the output of the opamp (~10 ohms) and the line going back to the negative opamp input and a small (pf) capacitor between the opamp output and the negative input . I think this is for damping high frequency oscillations. Should I use this with the unity gain follower? I'm not sure if its necessary or how to do this. The only way I can think of is to put a high resistor (~100k) before the positive opamp input and a 100k in the line going back to the negative input and then put the small cap and resistor as noted above. I'm[ Top ] [ Back ] [ Home Page ]