Chengjun Li
- Oct 21, 2014
- 84
- Joined
- Oct 21, 2014
- Messages
- 84
Hi,
I have a MEMS device which is simply a actuator connected to a displacement sensor. I apply a voltage to the actuator to make it move forward, the load sensor is connected to a conditioning circuit, from the output voltage of the conditioning circuit, I could tell the displacement. Now I met a problem. I use agilent 6613C power supply to provide voltage, but the power supply is grounded and the ground potential is not the same as the conditioning circuit ground. I think they interact with each other which lead to a strange output voltage value. Then I try to use a battery. The output voltage is as my expectation. But the battery is not a stable voltage source. The voltage is decreasing. I wonder can I have some floating power supply like battery but is more stable?
Ps: I find another old power supply in my lab. But I don't know whether this one has the ability as I need.
I have a MEMS device which is simply a actuator connected to a displacement sensor. I apply a voltage to the actuator to make it move forward, the load sensor is connected to a conditioning circuit, from the output voltage of the conditioning circuit, I could tell the displacement. Now I met a problem. I use agilent 6613C power supply to provide voltage, but the power supply is grounded and the ground potential is not the same as the conditioning circuit ground. I think they interact with each other which lead to a strange output voltage value. Then I try to use a battery. The output voltage is as my expectation. But the battery is not a stable voltage source. The voltage is decreasing. I wonder can I have some floating power supply like battery but is more stable?
Ps: I find another old power supply in my lab. But I don't know whether this one has the ability as I need.