  |
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: |
0.4 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. |
|
