Tech Briefs Magazine - June 2021 - MD-11

power, easy to interface,
and low-cost.
Typical optical encoders
for motor and rotation
Make your machine move
ma
applications are the similar
HEDS-9000 and HEDS9100
two-channel modules
from Avago Technol -
ogies (Broadcom). These
high-performance, lowcost
modules consist of an
LED source with lens and
a detector integrated circuit
enclosed in a small, Cshaped
plastic package,
along with drive and interface
electronics (Figure
5). They have a highly collimated
light source and special photodetector physical arrangement,
so they are very tolerant of mounting misalignment. (The
disk, called the code wheel, is purchased separately, with resolution
of 500 CPR and 1,000 CPR for the HEDS-9000 and between
96 CPR and 512 CPR for the HEDS-9100. The modules provide
two channels of TTL-compatible A and B digital outputs and
require a single 5-V supply.)
Figure 6. The CUI AMT10 capacitive en coder
might look like an optical encoder from the
outside but the underlying operating principle
is very different. (Image: CUI, Inc.)
MICRO LINEAR ACTUATORS
ACTU
·10mm-300mm stroke
· 6v-12v power supply
CUI AMT10 Series is an alternative to the optical encoder,
based on capacitive principles instead of optical ones (Figure 6).
These encoders offer a range of rugged, high-accuracy, modular
units available in incremental and absolute versions, with up to
12-bit (4,096-count) resolution selectable by the user from
among 16 values via a four-position, dual in-line package (DIP)
switch. The complementary metal oxide semiconductor
(CMOS)-compatible A/B quadrature outputs of these units are
reported via a standard serial peripheral interface (SPI).
Unlike optical encoders, the CUI AMT devices use a repeating,
etched pattern of conductors on the moving and non-movMagnet
N
·
25kg+ available force
·15g-100g net weight
ACTUONIX.COM
Free Info at http://info.hotims.com/79414-704
S
Magnetic field
Constant
Hall voltage
current flow
DC supply
Figure 7. The principle of the Hall-effect device involves current, voltage, and magnetic
fields orthogonal to each other. (Image: National Programme on Technology
Enhanced Learning (NPTEL), a project funded by the Government of India)
Motion Design, June 2021
Cov
ToC
Free Info at http://info.hotims.com/79414-705
11

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Tech Briefs Magazine - June 2021

Table of Contents for the Digital Edition of Tech Briefs Magazine - June 2021

Tech Briefs Magazine - June 2021 - Intro
Tech Briefs Magazine - June 2021 - Sponsor
Tech Briefs Magazine - June 2021 - Band1
Tech Briefs Magazine - June 2021 - Band2
Tech Briefs Magazine - June 2021 - Cov1
Tech Briefs Magazine - June 2021 - Cov2
Tech Briefs Magazine - June 2021 - 1
Tech Briefs Magazine - June 2021 - 2
Tech Briefs Magazine - June 2021 - 3
Tech Briefs Magazine - June 2021 - 4
Tech Briefs Magazine - June 2021 - 5
Tech Briefs Magazine - June 2021 - 6
Tech Briefs Magazine - June 2021 - 7
Tech Briefs Magazine - June 2021 - 8
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Tech Briefs Magazine - June 2021 - 11
Tech Briefs Magazine - June 2021 - 12
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Tech Briefs Magazine - June 2021 - 30
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Tech Briefs Magazine - June 2021 - 49
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Tech Briefs Magazine - June 2021 - 63
Tech Briefs Magazine - June 2021 - 64
Tech Briefs Magazine - June 2021 - Cov3
Tech Briefs Magazine - June 2021 - Cov4
Tech Briefs Magazine - June 2021 - MD-Cov1
Tech Briefs Magazine - June 2021 - MD-Cov2
Tech Briefs Magazine - June 2021 - MD-1
Tech Briefs Magazine - June 2021 - MD-2
Tech Briefs Magazine - June 2021 - MD-3
Tech Briefs Magazine - June 2021 - MD-4
Tech Briefs Magazine - June 2021 - MD-5
Tech Briefs Magazine - June 2021 - MD-6
Tech Briefs Magazine - June 2021 - MD-7
Tech Briefs Magazine - June 2021 - MD-8
Tech Briefs Magazine - June 2021 - MD-9
Tech Briefs Magazine - June 2021 - MD-10
Tech Briefs Magazine - June 2021 - MD-11
Tech Briefs Magazine - June 2021 - MD-12
Tech Briefs Magazine - June 2021 - MD-13
Tech Briefs Magazine - June 2021 - MD-14
Tech Briefs Magazine - June 2021 - MD-15
Tech Briefs Magazine - June 2021 - MD-16
Tech Briefs Magazine - June 2021 - MD-17
Tech Briefs Magazine - June 2021 - MD-18
Tech Briefs Magazine - June 2021 - MD-19
Tech Briefs Magazine - June 2021 - MD-20
Tech Briefs Magazine - June 2021 - MD-21
Tech Briefs Magazine - June 2021 - MD-22
Tech Briefs Magazine - June 2021 - MD-23
Tech Briefs Magazine - June 2021 - MD-24
Tech Briefs Magazine - June 2021 - MD-Cov3
Tech Briefs Magazine - June 2021 - MD-Cov4
Tech Briefs Magazine - June 2021 - ST-Cov1
Tech Briefs Magazine - June 2021 - ST-Cov2
Tech Briefs Magazine - June 2021 - ST-1
Tech Briefs Magazine - June 2021 - ST-2
Tech Briefs Magazine - June 2021 - ST-3
Tech Briefs Magazine - June 2021 - ST-4
Tech Briefs Magazine - June 2021 - ST-5
Tech Briefs Magazine - June 2021 - ST-6
Tech Briefs Magazine - June 2021 - ST-7
Tech Briefs Magazine - June 2021 - ST-8
Tech Briefs Magazine - June 2021 - ST-9
Tech Briefs Magazine - June 2021 - ST-10
Tech Briefs Magazine - June 2021 - ST-11
Tech Briefs Magazine - June 2021 - ST-12
Tech Briefs Magazine - June 2021 - ST-13
Tech Briefs Magazine - June 2021 - ST-14
Tech Briefs Magazine - June 2021 - ST-15
Tech Briefs Magazine - June 2021 - ST-16
Tech Briefs Magazine - June 2021 - ST-17
Tech Briefs Magazine - June 2021 - ST-18
Tech Briefs Magazine - June 2021 - ST-19
Tech Briefs Magazine - June 2021 - ST-20
Tech Briefs Magazine - June 2021 - ST-21
Tech Briefs Magazine - June 2021 - ST-22
Tech Briefs Magazine - June 2021 - ST-23
Tech Briefs Magazine - June 2021 - ST-24
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Tech Briefs Magazine - June 2021 - ST-33
Tech Briefs Magazine - June 2021 - ST-34
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Tech Briefs Magazine - June 2021 - ST-37
Tech Briefs Magazine - June 2021 - ST-Cov4
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