MAX4556C 데이터 시트보기 (PDF) - Maxim Integrated

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MAX4556C

Force-Sense Switches

Maxim Integrated 

Force-Sense Switches

BASIC 3-WIRE GUARD CIRCUIT

DRIVEN GUARD

(COAX CABLE SHIELD)

GUARD AMPLIFIER

VOLTAGE OR

CURRENT SOURCE

LEAKAGE

CURRENT

BALANCED 5-WIRE GUARD CIRCUIT

DRIVEN GUARD

(COAX CABLE SHIELD)

SENSE

VOLTAGE OR

CURRENT

GUARD AMPLIFIER

VOLTAGE OR

CURRENT SOURCE

LEAKAGE

CURRENT

LEAKAGE

CURRENT

SENSE

VOLTAGE

OR CURRENT

3-WIRE GUARD CIRCUIT USING TRIAX

GUARD AMPLIFIER

SIGNAL

GUARD

GROUND

TRIAX CABLE

LEAKAGE

CURRENT

GUARD AMPLIFIER

SENSE

VOLTAGE OR

CURRENT

VOLTAGE OR

CURRENT SOURCE

TRIAX CABLE/CONNECTOR

CENTER WIRE

INNER SHEILD

OUTER SHEILD

DRIVEN GUARD

(COAX CABLE SHIELD)

Figure 2. 3-Wire and 5-Wire Guarded Measurements

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