Ferromagnetic materials (like iron) are composed of microscopic regions called magnetic domains. The stronger the external magnetic field H, the more the domains align, yielding a higher magnetic flux density B. Eventually, The magnetization remains nearly constant, and is said to have saturated. The domain structure at saturation depends on the temperature.
What is magnetic saturation?
In electronic circuits, transformers and inductors with ferromagnetic cores operate nonlinearly when the current through them is large enough to drive their core materials into saturation. This means that their inductance and other properties vary with changes in drive current. In linear circuits this is usually considered an unwanted departure from ideal behavior.
Magnetic saturation current is called Isat, and the temperature rise current is called I rms. When the transformer and the inductor pass a large current in the actual circuit operation, the magnetic field of the magnetic core will produce magnetic saturation, which will cause the inductance characteristic to decline.
Therefore, the R&D engineer will set the current value of the inductance reduction allowable range.
Isat (Magnetic saturation current curve)
Irms (Rated current curve)
Using a DC Bias current source to apply a 200A bias current to the inductor, the inductance decreased from 2.06983uH to 1.02845uH.
Equivalent Circuit Analysis (Option)
It has seven different models, combine with different types of parameters ( R, L, C) help customers model the impedance versus frequency characteristics and self-resonant frequency (SRF).
Magnetic Material Test Fixture (FX-0000C8)
Using the magnetic material test fixture for measuring of permeability of various toroidal cores or ferrite cores and electromagnetic shielding coating materials, 6632 built-in formula to directly calculate the permeability coefficient value μr.
List Mode
50 groups of list mode setting (Each group contains up to 15 steps).
DC Bias Source Testing System combines the impedance analyzer 6632S with a DC bias source.This system is capable of analyzing the saturation characteristics of inductors, coils, ferrites, and magnetic cores. 6632S supports Equivalent Circuit Analysis with seven different models to assist customers in analyzing the impact of parasitic components on impedance/frequency.The system supports magnetic saturation current and temperature rise current scanning analysis, providing research and development engineers with fast and accurate current curve variations.
Selection
DC Bias Current Test System
6632S+ Series
Model
6632S+6210
6632S+6220
6632S+6223
6632S+6225
6632S+6240A
6632S+6243
6632S+6243H
Frequency Response
100Hz-3MHz
100Hz-3MHz
100Hz-10MHz
100Hz-30MHz
100Hz-3MHz
100Hz-10MHz
100Hz-10MHz
Output Current Max.
10A
120A
120A
20A
320A
320A
640A
Power consumption
320W
320W
320W
320W
640W
640W
640W
units of the DC Bias
1
6
6
1
8
8
16
Output Current (unit)
10A
20A
20A
20A
40A
40A
40A
SPEC
Current Accuracy
0.000A-1.000A 1%+5mA
1.001A-5.000A 2%
5.001A-40.000A 3%
DCR Test
●
Constant power output
●
Current switch
●
(6632+6225 not supported)
Graphic Scanning Analysis
Frequency graphic scanning analysis
Magnetic saturation curve (Isat)
Rated current curve (Irms)
Compitable with The Impedance Analyzer 6632S Series
6632S Support Equivalent Circuit Analysis
Model
6632-1S
6632-3S
6632-5S
6632-10S
6632-20S
6632-30S
6632-50S
Test
Frequency
10Hz-
1MHz
10Hz-
3MHz
10Hz-
5MHz
10Hz-
10MHz
10Hz-
20MHz
10Hz-
30MHz
10Hz-
50MHz
Equivalent Circuit Analysis
6632S
Frequency Setting
Continuity
Frequency Output Accuracy
±0.01%
Frequency Resolution
100mHz, 6-bit Frequency Input
Basic Accuracy
±0.08% (typical ±0.05%)
AC Drive Level
Test Signal Voltage Level
10mV – 2Vrms(100Ω)
10mV – 1Vrms(25Ω)
Voltage Minimum Resolution
1mV
Accuracy
ALC ON：6％ * Voltage ±2mV
ALC OFF：10％ * Voltage ±2mV
Test Signal Current Level
200µA – 20mArms
Current Minimum Resolution
10µA
Accuracy
ALC ON：6％ * Current ± 20µA
ALC OFF：10％ * Current ± 20µA
DC Drive Level
1V (fixed)
Output Impedance
25Ω/100Ω (switchable)
DC Bias Voltage
Built-in ±12V
(100Hz-50MHz)
External Voltage Bias
(±12V/±40V/±2000V)
DC Bias Current
Option DC Bias Current Source
(20A/60A/120A/320A)
External Voltage Bias
(100mA/1A)
Measurement Mode
Meter mode, list mode, sweep mode, and optional equivalent circuit analysis function (S model)
Measurement Parameters
|Z|、|Y|、θ、X、R、G、B、L、D、Q、DCR、C、 ESR、ε and μr
Test Time (Fastest)
< 3mS
6632S Measurement Parameters
Parameters
Range
|Z|
0.000 mΩ to 9999.99 MΩ
R, X
± 0.000 mΩ to 9999.99 MΩ
|Y|
0.00000 μS to 999.999 kS
G, B
± 0.00000 μS to 999.999 kS
θRAD
± 0.00000 to 3.14159
θDEG
± 0.000° to 180.000°
Cs, Cp
± 0.00000 pF to 9999.99 F
Ls, Lp
± 0.00 nH to 9999.99 kH
D
0.00000 to 9999.99
Q
0.00 to 9999.99
Δ
± 0.00% to 9999.99%
Rdc
0.00 mΩ to 99.9999 MΩ
εr’ εr”
0 to 100000
μr’ μr”
0 to 100000
System
Measurement Circuit
Series/Parallel
Correction
Open Circuit/Short Circuit/Load correction
Cable Compensation
0 / 0.5 / 1 /2 (m)
BIN
ABS、ΔABS、Δ%、OFF
Comparator
9
List Mode
50 groups of Multi-steps setting (Each group contains up to 15 steps)
Bulit-in Storge
100 sets LCR setting documents, 50 groups of list mode setting
USB Host Storge
LCR setting documents, list mode setting document, BMP graphics, Sweep screen and test result data
DCT’s Skilled Management Team has more than twenty-five years of experience and expertise in the local business environment, coupled with a highly motivated group of employees, positions us as the preferred supplier among the major customers in the industry.
DCT Competitive Edge is the prompt response to our customer needs, the online and on-site direct technical support, professional consulting for the best cost/performance solution, on-time delivery, long-term maintenance, and support.
