Introduction:
Permalloys, i.e. iron-nickel alloys, have a wide range of nickel content, between 35 and 90 per cent. The most important characteristic of Permalloys is their high weak field permeability. Their saturated magnetic induction is generally between 0.6 and 1.0 T. Through the appropriate process, the magnetic properties can be effectively controlled, such as more than 100,000 initial permeability, more than one million maximum permeability, coercivity as low as two thousandths of an Oersted, rectangular coefficient close to 1 or close to zero, with face-centered cubic crystal structure of the pomol alloy has a very good plasticity, and can be processed into ultra-thin strips of 1 micrometer and a variety of use forms. Commonly used pomolic alloys are 1J50, 1J79, 1J85, etc. The saturation magnetic induction of 1J50 is 1.5 times higher than that of 1J85.
1J50 saturation magnetic induction strength than silicon steel is slightly lower, but the permeability is dozens of times higher than silicon steel, iron loss is also lower than silicon steel 2 ~ 3 times. Made of higher frequency (400 ~ 8000Hz) transformer, no-load current is small, suitable for making 100 watts of small higher frequency transformers.
1J79 has good overall performance, suitable for high frequency and low voltage transformers, leakage protection switch cores, common mode inductor cores and current transformer cores.
The initial permeability of 1J85 can reach over 100,000, which is suitable for low frequency or high frequency input/output transformers for weak signals, common mode inductors and high precision current transformers.
Permalloy are used to harvest energy the electromagnetic ring with 1J85 grade strips:
- Very high permeability and low iron loss under weak magnetic field.
- Very good corrosion resistance
- Can be used in outdoor and humid environment
- Suitable for small current inductors
Permalloy core can be customised
| Size ( d * D * B )(mm) |
Cross-sectional area(mm²)
|
Weight(g)
|
Inductance（uH）(1K 1V 25℃) |
Magnetic circuit length（mm） |
| 45*76*40 |
620 |
973.46 |
70.6 |
189.97 |
| 52*790*40 |
540 |
917.93 |
56.7 |
205.67 |
| 55*95*20 |
400 |
778.56 |
34.7 |
235.5 |
| 42*72*25 |
375 |
554.73 |
49.5 |
178.98 |
| 48*78*25 |
375 |
613.12 |
37.3 |
197.82 |
| 54*84*25 |
375 |
671.51 |
33.1 |
216.66 |
| 55*80*28 |
350 |
613.12 |
38.7 |
211.95 |
| 54*79*28 |
350 |
604.04 |
38.7 |
208.81 |
| 65*90*25 |
312.5 |
628.53 |
29.2 |
243.35 |
| 65*90*20 |
250 |
502.82 |
31.9 |
234.35 |
| 55*75*25 |
250 |
421.72 |
24.7 |
204.1 |
| 55*75*20 |
200 |
337.38 |
25.8 |
204.1 |
| 65*90*15 |
187.5 |
377.12 |
21.4 |
243.35 |
| 55*75*15 |
150 |
253.03 |
21.5 |
204.1 |
| 48*68*15 |
150 |
225.78 |
22.4 |
182.12 |
| 38*59*12 |
126 |
158.59 |
22.3 |
152.29 |
| 70*85*15 |
112.5 |
226.27 |
6.9 |
243.35 |
| 29*50*10 |
105 |
107.64 |
15.7 |
124.03 |
| 127.5*115.5*10.5 |
62.4 |
196.76 |
3.2 |
381.51 |
| 59*69*8 |
40 |
66.44 |
5.7 |
200.96 |
| 52*40*6 |
36 |
42.89 |
5.1 |
144.44 |
| 38*47*4 |
18 |
19.85 |
3.5 |
133.45 |
Application:
The permalloy core are suitable for the application in weak magnetic field, can be used for manufacturing high sensitivity and small power transformer, low power magnetic amplifier, relay, head of magnetic recording device, zero sequence current transformer, power converter, precision current transformer, magnetic amplifier, power transformer, choke, pulse transformer, change polarity pulse transformer, DC voltage converter, magnetic modulator, constant inductance element, unipolar pulse transformer, magnetic shielding, and so on.
Hemei electronics Permalloy power supply ring, power supply current transformer, after years of research and development and production application test, stable performance, excellent performance, in the domestic is located in the industry's leading level. If you need this product, please tell us your needs!
