Agilent Technologies N6705 Spezifikationen PDF herunterladen (Seite 9)

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switching between 2-wire mode

(local sensing) and 4-wire mode

(remote sensing) is done via an

internal relay inside the N6705 DC

power analyzer, eliminating the

need for shorting bars or jumpers

commonly found on other bench

power sources.

DC power modules offer low

noise outputs

Careful attention has been paid to

this design to ensure low normal

mode noise (ripple and peak-peak)

as well as low common mode

noise. While all DC power modules

are switching power supplies, the

N6750 high-performance autorang-

ing DC power modules and the

N6760 precision DC power modules

are switching power supply designs

that outperform most linear power

supplies on the market.

DC power modules provide fast

voltage changes

When it comes to speed, the N6750

high-performance autoranging DC

power modules and the N6760 pre-

cision DC power modules achieve

performance unlike a typical DC

power supply. Thanks to an active

down-programming circuit to rapidly

pull down the output when lowering

the module’s output voltage, the

N6750/60 can rapidly program both

up and down in voltage. Changing

voltage from 0 V to 50 V, or 50 V to

0 V, can be accomplished in less

than 1.5 milliseconds. And for

smaller voltage changes, for

example from 0 V to 5 V or 5 V to

0 V, the programming speed is less

than 200 microseconds. These out-

put speeds allow the N6750/60 to

give maximum system throughput

when your test calls for frequent

changes in power supply voltage

settings.

Autoranging for flexibility

The N6750 high-performance

autoranging DC power modules and

the N6760 precision DC power mod-

ules give you even more flexibility

by providing autoranging outputs.

This autoranging capability provides

maximum output power at any out-

put voltage up to 50 V. This allows

one power supply to do the job of

several power supplies because its

operating range covers low voltage,

high current as well as high voltage,

low current operating points. For

example, the N6751A high-perfor-

mance, autoranging DC module,

rated at 50 V, 5 A, and

50 W can provide full power at

10 V @ 5 A (=50 W),

20 V @ 2.5 A (= 50 W),

33.3 V @ 1.5 A (= 50 W),

50 V @ 1 A (= 50 W)

or anywhere in between. There

fore,

this 50 W autoranging power

supply,

due to its extended voltage and

current range, can produce voltage

and current combinations in the

range of a 250 W non-autoranging

power supply. See page 27 for a

diagram describing the details of the

autoranging output characteristics

of the N6750 and N6760 families of

DC power modules.

Use the N6760 DC power modules

for precision low-level performance

The N6760 precision DC power

modules provide dual ranges on both

programming and measurement. In

the low range, these power supplies

provide precision in the milliampere

and microampere regions. They are

Figure 11. The Agilent N6705 DC power analyzer is a perfect size

for the bench.

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