EVKT-KNOB

– ROTARY KNOB KIT FOR THE MAGALPHA

EVKT-KNOB

www.MonolithicPower.com

10

12/10/2018

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The EVMA nominal magnet sensor distance is 1.5mm, providing a magnetic field of 75mT. With the

spacers, the field strength is reduced to 50mT or 25mT (see Table 7).

Table 7: Setting of the Air Gap

Spacer Thickness (mm)

Air Gap (mm)

Magnetic Field (mT)

None

1.5

75

0.7

2.2

50

2

3.5

25

Figure 15: Air Gap Setting

MAGNET SUPPLIERS

The table below shows a non-exhaustive list of possible magnet suppliers. The magnetization direction

must be chosen wisely given the fact that most magnets sold are often axially magnetized, which is not

a magnetization direction usually required in magnetic angle sensing applications. Angle sensing

applications usually use diametrically magnetized magnets.

Table 8: Magnet Suppliers

Company

Website

Address

Maurer Magnetics AG

www.maurermagnetic.ch

Industriestrasse 8

8627 Grüningen

Switzerland

Arnold Technologies AG

www.arnoldmagnetics.com

Hübelacherstrasse 15

5242 Birr-Lupfig

Switzerland

Bomatec AG

www.bomatec.com

Hofstrasse 1

8181 Höri

Switzerland

Dexter Magnetic Technologies

www.dextermag.com

1050 Morse Avenue

Elk Grove Village, IL 60007-5110

USA

JPMF

www.jpmf.com.cn

8 LongWan Road

Jiangmen City

GuangDong Province

China

Binicmagnet

www.binicmagnet.com

Unit 612 Yuanzhong Building

No. 1905 Hongmei Road

Shanghai

P. R. China 200233

China Rare Earth Magnet

www.permanentmagnet.com

Room 705, Tower A Century Holiday Plaza

9030 Shennan Rd

Nanshan District

Shenzhen

China

Goudsmit Magnetic Systems

www.goudsmit-magnetics.nl

Petunialaan 19

5582 HA Waalre

Netherland

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