www.piher.net
Piher potentiometers recommended
connection circuit for a position sensor or
control application.
(voltage divider circuit electronic design).
PIHERs potentiometers can
feature special stepped outputs
or constant voltage zones for
the 10mm and 15mm product
families.
These constant voltage zones
can be combined with PIHERs
mechanical detents to provide
exact alignment between the
electrical output (flat areas)
and the mechanical detent
position. The result is a higher
level of precision in controlling
lighting, temperature, motor or
other electronic control
systems.
In addition to established
catalogue detent
configurations, we will design
and manufacture any other
configuration on our tried-and-
tested carbon/cermet &
THM/SMD potentiometer
technology and processes.
With its precise control
capabilities, our 10mm and
15mm potentiometers series
are well suited for many
consumer applications such as
lighting (dimmers), power hand
tools, relays, timers and HVAC
systems.
7
Constant value zones can be combined with strategically located stops matching the flat areas of the output.
If you require this feature, please, send us your requirements to sales@piher.net
RECOMMENDED CONNECTIONS
RAD
RL
RL 100 x R
VCC
C
Noise filter.
Ground.
E
A
S
STEPPED OUTPUTS
E
A== = = = = ===
88.9% Un
77.7% Un
66.6% Un
55.5% Un
44.4% Un
33.3% Un
22.2% Un
11.1% Un
0% Un / 0º
100% Un
50%
2 3 4 5 6 7 8 9
110
100%
0º 234º
SA E
S
By combining the constant value zones with the detents, engineers
can align the same voltage values with each of the detent stops
when rotating the control both forward and backward.
This provides clear mechanical positions that are not only repeatable,
but perfectly aligned electrical outputs at each of the (detent) angles.
Pihers detents also prevent output values from changing due to
vibration or accidental rotor movements, furthering reliable control
consistency.
°
6
2
EA
Wiper position
2
3
4
56
7
8
9
110
when the potentiometers wiper position is located at detent
nº9, the output votage will be 88.9% Un ± % tolerance.
Improved repeatability
Stepped outputs version example (10 steps version):
Unique, non-overlapping values at each stop (detent position)
It prevents changes in the output value due to light vibration or accidental
rotor micro-movements
Fully customisable according to customer´s needs
Cost effective replacement for absolute encoders
Main advantages
Absolute encoders can easily be
replaced connecting the potentiometer to
the microprocessors
analogue input.
Design tip. Cost-effectiveness