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Nicotra DDMP Series User Manual

Nicotra DDMP Series
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13
Rev. 2 – 10
th
November2015
A typical problem related to the fan speed is the resistances selection.
Here in the following a simple procedure for calculating them.
1) Find the
Voltage
(Required)
= V
Req
for achieving the
Speed
(Desired)
using the diagram
Signal/Speed of figure 14.
&
'

()*+
!


"#$
!

,-&,-&
2) Reminding that ./01/2345./
6
7
8
7
9
%:;<=2
And that the analog
Input Impedance =
Z
in
=
20kOhm
&
'
:;7
9
./
6
:;7
9
!7
9
9
7
9
./
6
&
'
!:;
>
?
:;!&
'
./
6
@
9
A;&
*'
9
./
6
:&
'
In figure 15 is shown the behavior of the analog voltage signal increasing the potentiometer value.
Fig.15 – Effect of the potentiometer value on the analog signal

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Nicotra DDMP Series Specifications

General IconGeneral
BrandNicotra
ModelDDMP Series
CategoryFan
LanguageEnglish

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