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Applications
Imaging-High
Power
Imaging
NMR
Pulsed Applications
Additional
Information
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GRADIENT
AMPLIFIERS - ANIMAL IMAGING
MODELS BFH-266-SP AND BFH-C700-SP
MODEL
BFH-266-SP SPECIFICATIONS
Current
Mode Output
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Ms On/Off
|
DC
|
Unipolar 500/500
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Unipolar 100/100
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Unipolar 20/40
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+/-Burst
|
|
A peak
|
250
|
312
|
350
|
430
|
475
|
|
A rms
|
250
|
312
|
247
|
248
|
237
|
Output
Voltage to Coil
|
@ 470
mH
|
+/- 350 V across output terminal with 430A pulses
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Operational
requirements
|
Power
|
208 to 380 VAC, 3 phase, +/-10%
|
|
Frequency
|
50 and 60 Hz
|
|
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Front and rear air inlet/outlet
|
|
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-20oC to 35oC
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Enclosure
and dimensions
|
|
Cabinet with casters and levelers, front door
|
|
Dimensions
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78.5”H x 22”W x 30.6”D (199.3cm x 55.9cm x 77.7cm)
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Weight
|
1,040 lb (472 kg)
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MODEL
BFH-C-700-SP SPECIFICATIONS
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Load
Inductance
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Output
Voltage
|
|
>
700 mH
|
+/-
700 V across output terminal
|
|
~
200 – 500 mH
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+/-
675 V
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~
100 mH
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+/-
650 V
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|
Current
(on/Off, ms)
|
Duty
Cycle A (peak), A (rms)
|
|
DC
|
212
|
|
500/500
|
220,
156
|
|
100/100
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300,
212
|
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20/40
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365,
211
|
|
15,
140
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500,
156
|
|
Symmetrical
Burst
|
400,
212
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Settling
Response, 400 A peak, 200 mH
|
Current
error < 1.0%
|
<
70 ms
|
|
Current
error < 0.5%
|
<
100 ms
|
|
Current
error < 0.1%
|
<
140 ms
|
|
Repeatability
(A pk), linearity
|
0.01%
|
|
Due
to self-heating @ 200 A DC
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|
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Offset
|
<
10 mA, 15 min
|
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Gain
|
500
ppm/15 min
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|
|
|
|
Due
to Ambient Temperature
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|
|
Offset
|
0.8
mA/oC, 30 ppm/oC
|
|
Gain
|
300
ppm / oC
|
|
0.01
Hz to 5 Hz
|
<
200 mA rms
|
|
5
Hz to 10 kHz
|
<
350-30 * f m A rms
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>
10 kHz
|
<
5 * f m A rms
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Ripple
|
<
5.5 V rms
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Main
Service
|
200/208
or 380/400 VAC, 3 f
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Frequency
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50
- 60 Hz
|
|
Forced
air cooling
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Front
air inlet and rear air outlet
|
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Inlet
air temperature
|
10oC
to 35oC
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Enclosure,
dimensions and weight
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Dimensions
|
19
“ modified BUD rack cabinet
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|
Weight
|
700
lbs (320 kg)
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|
 Model
BFH-266-SP
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