Hi guy's, first of all, thanks in advance for any help its much appreciated.
I have a very simple test circuit for measuring contact resistance variation on potentiometers and i'm using a LM334 as a 1mA constant current source. The cap is just being used as a DC filter, I'm only interested in the transient voltage. I have put a 1ohm series resistor on the LM334 output to monitor the current and am finding it is ramping up exponentially as the load is reduced on the pot. So the question is, should this cct work and if so what have I overlooked. Cheers all.
I have a very simple test circuit for measuring contact resistance variation on potentiometers and i'm using a LM334 as a 1mA constant current source. The cap is just being used as a DC filter, I'm only interested in the transient voltage. I have put a 1ohm series resistor on the LM334 output to monitor the current and am finding it is ramping up exponentially as the load is reduced on the pot. So the question is, should this cct work and if so what have I overlooked. Cheers all.
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