Hi Everyone,
I have another question from Electronic Principles page 864 regarding integrators. I attached an image for clarification.
The book discusses the use of a resistor in parallel with the capacitor to account for input offset voltage. If I understand this correctly, the resistor limits the voltage gain, thereby limiting how much this offset voltage charges the cap. However, why doesn't the resistor have the same effect on the valid input voltage? The book mentions that the offset signal is DC and implies the valid voltage is not, but I'm not exactly sure how this is relevant..
The book then introduces the idea of using a JFET instead of the resistor. The JFET resets the cap before the input pulse. However, does input offset no longer have any effect?
Thanks everyone for the help!
Austin
I have another question from Electronic Principles page 864 regarding integrators. I attached an image for clarification.
The book discusses the use of a resistor in parallel with the capacitor to account for input offset voltage. If I understand this correctly, the resistor limits the voltage gain, thereby limiting how much this offset voltage charges the cap. However, why doesn't the resistor have the same effect on the valid input voltage? The book mentions that the offset signal is DC and implies the valid voltage is not, but I'm not exactly sure how this is relevant..
The book then introduces the idea of using a JFET instead of the resistor. The JFET resets the cap before the input pulse. However, does input offset no longer have any effect?
Thanks everyone for the help!
Austin
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