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External Input Filters


Input filters are available for DC input power supply Series B or S to attentuate the AC ripple by a factor of 10. When the appropriate filter is used with an Martek Power Abbott power module, electromagnetic interference characteristics of the power module are also substantially reduced. Conducted interference, conducted susceptibility, as well as spike susceptibility levels are also reduced. Insertion loss from the Martek Power Abbott filter has been held to a minimum consistent with good attentuation. These hermetically sealed filters have been designed to meet the rugged environments of MIL-STD-810C and MIL-E-5400P frequently encountered in aerospace and industrial systems.

 

Specifications

Input Voltage Range:

24 to 30 volts DC, continuous.

Attentuation Ratio¹:

10:1 minimum.

Insertion Loss²:

0.4clear_dot.gif (807 bytes) volts DC maximum at full rated current.

Temperature:

+100°C maximum at mounting base; -54°C minimum at mounting base.

Environment:

Encapsulated to meet the environmental requirements of MIL-STD-810C and MIL-E-5400P, Class 2.

Rated Current:

See specific models listed below.


Standard Models

* For use at input of Abbott models beginning with

Rated Current
(Amps)

Size
(see Dwg.)

Weight**
(Lbs.)

Weight **
(Kgs.)

Model Number

B05

0.6

1B

0.7

0.3

YB05D

B1

1.0

1B

0.7

0.3

YB1D

B2

1.7

1B

0.7

0.3

YB2D

B3

2.4

1B

0.7

0.3

YB3D

S3

3.1

1

1.8

0.8

YS3D

B5

3.8

1

1.8

0.8

YB5D

S6

5.5

1

1.8

0.8

YS6D

B10

8.4

2

2.4

1.1

YB10D

B17

17.0

8

3.6

1.6

YB17D

             

*

Having any output voltage.

**

Weights are ±5%.

1.

Attentuation ratio as used here is a ratio or fraction whose numerator is the AC voltage measured, RMS, across the input terminals of the power module and whose denominator is the AC voltage measured.  RMS, across a one-half OHM resistor connected in series with the plus terminal of the DC voltage source, such as a battery.  (The one-half OHM resistor synthetically represents the source impedance)

2.

Insertion loss, as used here, is defined as the DC voltage across the input terminals of the filter minus the DC voltage across the output terminals of the filter.  This may be as high as 0.9 volts for models B10 and B17.


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