Discussion in "Electronics" started by    east    May 12, 2017.
Fri May 12 2017, 08:27 AM
#1
Hello~all,
Can you help me answer my doubts?
The sinusoidal signal in the simulated picture produced by ICL8038( This is the data-sheet of LCL8038: http://www.kynix.com/uploadfiles/pdf0125/ICL8038.pdf ) in the actual circuit. The another two resistances I used in actual circuit are Constantan resistances --10milliohm. However the wave which tested by the real oscilloscope is so mass and it’s so different from the effect of simulation.


Does anyone know what it occurred?


[ Edited Fri May 12 2017, 08:29 AM ]
Fri May 12 2017, 08:33 AM
#2
The picture is given below.




[ Edited Fri May 12 2017, 08:33 AM ]
Fri May 12 2017, 07:41 PM
#3
We really need to see your full actual circuit.
It occurs to me that a load of 20 milliohm would short out the signal.
In some case Proteus is more tolerant than the real thing,
and sometimes less tolerant.
What is the circuit for ?

Mon May 15 2017, 09:55 AM
#4
Hi, ExperimenterUK
I have found reason. When I used small resistance instead of big resistance,The driving ability to produce sine-wave of ICI8038 is not enough,so the wave is mass. After I decrease the sine wave amplitude, the wave is normal.
Thank you for you help.

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