Hello everybody, here my first post!
I have a problem with an analogic circuit. This circuit works but, while working, it creates too much noise ... I would be glad to get some tips in order to improve it!
The input signal is a potential sweeping from 0 to 5 V (NI-6009). This potential is applied on a load (Resistance, electrochemical cell etc...) and then current is recorded through a resistance. The circuit helps the NI-6009 to sustain power in the range of 0,5 W to 1 W.
I carried out experiments with a 10 Ohm-load, I obtain standard deviation of the input signal of ~ 100 mV and the aim would be, if possible, 10 mV.
I managed to reduce the standard deviation to 60 mV in inserting capacitors between the bases and the emitters of the transistors, but I don't really know what to do...it is above my competencies...
Does someone know what I should insert and where in the schematic above?
Many thanks by advance!
I have a problem with an analogic circuit. This circuit works but, while working, it creates too much noise ... I would be glad to get some tips in order to improve it!
The input signal is a potential sweeping from 0 to 5 V (NI-6009). This potential is applied on a load (Resistance, electrochemical cell etc...) and then current is recorded through a resistance. The circuit helps the NI-6009 to sustain power in the range of 0,5 W to 1 W.
I carried out experiments with a 10 Ohm-load, I obtain standard deviation of the input signal of ~ 100 mV and the aim would be, if possible, 10 mV.
I managed to reduce the standard deviation to 60 mV in inserting capacitors between the bases and the emitters of the transistors, but I don't really know what to do...it is above my competencies...
Does someone know what I should insert and where in the schematic above?
Many thanks by advance!