theredkid
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Dear All,
I have 2 questions that I need to solve and hand in. Could you pls help me with the following?
1) When using high voltage supplies, safety requirements dictate that a safety ground has to be connected between the HV supply ground terminal and a building ground. However, this creates a ground loop, with ground currents flowing through ground screens in the signal cables between the control unit and the HV supply. How can these ground currents be minimized?
2) Sketch an amplifier circuit for measuring currents up to 1 μA from DC to 1 kHz. Input impedance shall be lower than 100 Ω. Output voltage at 1 μA shall be 1 V.
Thank you/Red
I have 2 questions that I need to solve and hand in. Could you pls help me with the following?
1) When using high voltage supplies, safety requirements dictate that a safety ground has to be connected between the HV supply ground terminal and a building ground. However, this creates a ground loop, with ground currents flowing through ground screens in the signal cables between the control unit and the HV supply. How can these ground currents be minimized?
2) Sketch an amplifier circuit for measuring currents up to 1 μA from DC to 1 kHz. Input impedance shall be lower than 100 Ω. Output voltage at 1 μA shall be 1 V.
Thank you/Red