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Types of probes (continued)

Current probes

Current probes sense the current

flowing through a conductor and

convert it to a voltage that can

be viewed and measured on an

oscilloscope. Agilent current

probes use a hybrid technology

that includes a Hall-effect sensor,

which senses the DC current,

and a current transformer, which

senses the AC current. Using split

core construction, the current

probe easily clips on and off of a

conductor, making it unnecessary

to make an electrical connection

to the circuit. Measurement

bandwidths from DC to 100 MHz

are available.

Current probe characteristics

Model Probe type Probe bandwidth Max input current Applications and use Oscilloscope compatibility

1146A AC/DC current, 100 kHz 100 A peak • AC line, motors, High-impedance BNC input

0.1 V/A automotive current

(0-10 A peak) measurement

or 0.01 V/A • Requires 9-Vdc battery

(0-100 A peak)

1147A AC/DC current, 50 MHz 15 A rms continuous Motors, switching power High-impedance

0.1 V/A 30 A peak supplies, magnetic-device AutoProbe input

non-continuous current measurements

N2774A AC/DC current, 50 MHz 15 A rms continuous • Motors, switching power High-impedance BNC input

0.1 V/A 30 A peak supplies, magnetic device

non-continuous current measurements

• Requires N2775A

2-channel power supply

N2780A

AC/DC current, 2 MHz 500 A rms continuous Motors, switching power High-impedance BNC input

0.01 V/A 700 A peak supplies, line currents

non-continuous

N2781A

AC/DC current, 10 MHz 150 A rms continuous Motors, switching power High-impedance BNC input

0.01 V/A 300 A peak supplies, transformers

non-continuous

N2782A

AC/DC current, 50 MHz 30 A rms continuous Switching power supplies, High-impedance BNC input

0.1 V/A 50 A peak amplifiers, magnetic

non-continuous devices

N2783A

AC/DC current, 100 MHz 30 A rms continuous Switching power supplies, High-impedance BNC input

0.1 V/A 50 A peak low current measurements

non-continuous

1 To use the 1146A, N2774A or N2780A Series current probe with Infiniium 80000, 90000 or 5485xA Series scope, order E2697A 1 MΩ high-impedance adapter.

2 Requires N2779A 3-channel power supply.

1 2 3 4 5 6 7 8 9 10 11 12

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