Pulse Width Modulated DC Fans
JMC offers a host of high frequency Pulse Width Modulated (PWM) fans that perform at low noise levels by eliminating the power switching noise of the fan. The motor commutation noise is eliminated with high frequency PWM as the coils of the fan are being switched with a frequency above 20 kHz, which is outside the human audible range.
The speed of the fan is controlled by an external PWM
signal. The JMC PWM ramps up linearly from a 20% duty cycle up to the
fan's maximum rated speed. Because the fan can run at lower speeds it
is more energy efficient and will therefore have a longer life.
Several of the listed PWM Fan are also available in 24 and 48 Volts
Data table reflects HIGH speed PWM Fan
All performance figures are at nominal voltage
|
PART
Number |
FAN SIZE
|
VOLTAGE
(Vdc) |
POWER
(W) |
CURRENT
(A) |
SPEED
(RPM) |
NOISE
(dBA) |
PRESSURE
(in. H20) |
AIR FLOW
(CFM) |
|---|---|---|---|---|---|---|---|---|
|
38x28
|
10.0-13.2
|
3.60
|
0.30
|
10000
|
38.0
|
0.33
|
10.0
|
|
|
40x25
|
10.8-13.2
|
2.40
|
0.20
|
10000
|
40.6
|
0.48
|
11.0
|
|
|
40x28
|
10.8-13.2
|
6.00
|
0.50
|
14000
|
48.0
|
0.95
|
15.4
|
|
|
40x28 FV
|
10.8-12.6
|
11.28
|
0.94
|
20000
|
61.0
|
2.10
|
30.0
|
|
|
40x40x56 CR
|
10.8-12.6 |
37.2 |
3.10 |
20000 |
68.0 |
2.70 |
40.0 |
|
|
40x50x38 CR
|
4.5-13.2 |
9.00 |
0.75 |
10200 |
56.0 |
0.66 |
22.4 |
|
|
50x15
|
10.8-13.2 |
1.92 |
0.16 |
5500 |
29.6 |
0.15 |
13.5 |
|
|
60x15
|
10.8-13.2 |
3.60 |
0.30 |
5000 |
37.9 |
0.27 |
25.0 |
|
|
60x25
|
10.8-13.2 |
5.40 |
0.45 |
7000 |
40.5 |
0.50 |
33.0 |
|
|
60x38 FV
|
10.8-13.2 |
10.40 |
0.87 |
8000 |
60.0 |
0.80 |
48.5 |
|
|
70x15
|
10.8-13.2 |
6.60 |
0.55 |
5200 |
45.0 |
0.22 |
36.6 |
|
|
70x25
|
10.8-13.2 |
4.80 |
0.40 |
5000 |
42.8 |
0.35 |
42.7 |
|
|
80x15
|
10.8-13.2 |
2.28 |
0.19 |
3200 |
35.0 |
0.13 |
33.6 |
|
|
80x25
|
10.8-13.2 |
6.6 |
0.55 |
5000 |
47.1 |
0.35 |
54.1 |
|
|
80x38 FV
|
10.8-13.2 |
27.60 |
2.30 |
8000 |
64.5 |
1.14 |
115.0 |
|
|
92x25
|
10.8-13.2 |
7.68 |
0.64 |
4000 |
42.5 |
0.27 |
82.0 |
|
|
92x32
|
10.8-13.2 |
10.20 |
0.85 |
4000 |
45.0 |
0.34 |
83.1 |
|
|
92x38 |
10.8-13.2 |
27.6 |
2.3 |
5700 |
53.2 |
0.80 |
120.0 |
|
|
120x25
|
10.8-13.2 |
9.00 |
0.75 |
3200 |
50.0 |
0.31 |
126.0 |
|
|
120x38
|
10.8-13.2 |
16.80 |
1.40 |
4100 |
53.0 |
0.50 |
148.0 |
|
|
120x38 FV
|
10.8-13.2 |
30.0 |
2.5 |
4500 |
60.3 |
0.82 |
200.0 |
|
|
97x94x33 Blower
|
10.8-13.2 |
19.20 |
1.60 |
4800 |
55.0 |
35.0 |
35.0 |
