Impulse Winding Tester DWX Series
Ultra-low-inductance coil, high-speed test specification!
1μH coil is tested in 10msec !
For evaluation test: It can be used for the detailed evaluation test of coil parts.
For high-speed test: device Impression time 4msec, It is operated by test interval of 10msec.
*Pulse impression 1 pulse , without Judgment , during speed without screen display
*Part of it is related to function and performance, and is among patent
The model is specialized in the insulation test of chip power inductor coil.
4 terminal testing circuits can be performed sufficiently with applied high voltage to ultra-low inductance coil. Maximum of 1000v (shown on screen) impression is possible to a minimum of 1μH coil.
Detailed response waveform is displayed as twice as many wave-form sampling resolution by testing machine.
High-speed test can be done with shortest test time of 30msec with 1 pulse application, and mass-production in line is possible. Each function of a test mode" and the "breakdown test mode" which performs detailed evaluation is carried in one set.
Impression of one pulse, high-speed test can be done without a judgment in shortest test time of 10msec, and mass-production line is possible.
It also suits to a choke , motor coil, and coil with few numbers of turns besides a chip power inductor.
Comparison of standard DWX-05A performance
|Application||precision test||Ultra-low inductance||Ordinary coil parts At large|
|Maximum||1μH during 300V||1μH during 1000V||10μH during 1000V|
|Minimum test time
（During 1 pulse impression）
|HI Speed Mode
Without judgment 10msec
With judgment 18msec
Without screen display
With screen display 108msec
|Area (Area% ) ,Waveform difference area (Dif Area),
Peak voltage (Peak Stb%)
Electric discharge level (Laplacian),
Waveform extinction ratio (Laplacian%)
Break-down-voltage evaluation test (BDV)
Resist pressure evaluation test by manual operation
Waveform difference area (Dif Area)
Amount of electric ischarge (Flutter)
Electric discharge level (Laplacian)
|Test circuit||Test circuit||2 terminals|
|Test cable range||Recommended 1.5m （maximum 3m）||Recommended 1.6m
|PD test||Failure||PD Symetry|
|Number of master waveform memory 196 models, External control by extended RS-232C and I/O and CF memory card, Result Log preservation, Screen hard copy preservation|
|Impression trigger (Trig), High-speed interface timing
corresponds for inspection hair driers
|The start of test (Start), Under an examination
(Busy) etc. ,External control
|Accessories||1.5m of 4 terminal examination cables||1.6m of examination cables|
|Power supply||AC100/115/220/240 ±5% Changeable|