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| HF3 Series
3.5 kV FLOATING MICROCHANNEL PLATE POWER SUPPLIES AT UP TO 30
kV ISOLATION
Applications
- Microchannel plates for Mass Spectrometers & Electron Microscopes
- Floating grid & bias voltages
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[Click image to enlarge]
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These power supplies, based on the standard HP series are intended
to power imaging detectors. They give 0 to +3.5kV and can be floated
on voltages up to ±2.5kV (HFxx2.5), ±10kV (HFxx010),
±20kV (HFxx020) & ±30kV (HFxx030) and use differential
feedback techniques to allow the 24 volt power, control and
monitor signals to be at ground potential.
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Pin Connection & Safety Instructions
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ELECTRICAL SPECIFICATION |
| UNIT TYPE |
OUTPUT |
ISOLATION |
OUTPUT RIPPLE |
INJECTED RIPPLE (1) |
| HF003PAA2.5
HF003PAL2.5 |
0 TO +3.5kV
at 1 ma |
±2.5 kV (2) |
50 mV peak to peak |
50 mV peak to peak
25 mV peak to peak |
| HF003PAA010
HF003PAL010 |
0 TO +3.5kV
at 1 ma |
±10 kV (3) |
75 mV peak to peak |
75 mV peak to peak
35 mV peak to peak |
| HF003PAA020
HF003PAL020 |
0 TO +3.5 kV
at 1 ma |
±20 kV (3) |
100 mV peak to peak |
150 mV peak to peak
75 mV peak to peak |
| HF003PAA030 |
0 TO +3.5 kV
at 1 ma |
±30 kV (3) |
150 mV peak to peak |
200 mV peak to peak |
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| (1) ripple injected into the power supply
providing the floating voltage, measured assuming load capacitance
of 1000 pF.
(2) resistance to ground 400 Mohm on each output.
(3) resistance to ground 600 Mohm on each output.
AA= Option Code:
AA=Standard Unit, PR=Pot & Ref Ctrl, PL=Pot & Ref Ctrl +
Low Injected Ripple option
AL=Low Injected Ripple Option, but Pot & Ref Ctrl Option Not
Fitted
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ELECTRICAL SPECIFICATION
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Input voltage:
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+24 volt at 0.7 amp
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Output voltage:
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See table above for output voltage and isolation voltage.
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| Control:
(At Ground Level)
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0 to +10V gives 0 to +3.5
kV. Tolerance ±3%, input impedance >100 kohm.
INTERNAL or EXTERNAL potentiometer control Optional - Option
Code P
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Line regulation:
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Less than 0.1%.
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Load regulation:
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Less than 0.1%.
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Voltage monitor:
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0 to +10V ±3% represents 0 to +3.5 kV.
Source resistance 10 kohm.
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Drift:
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Typically 0.1% of full scale voltage per hour, measured at
constant input voltage, output voltage, load, polarity &
ambient temperature after 1 hours warm up.
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Temperature co-efficient:
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Less than 0.02% per °C.
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Operating temperature:
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0 °C to +50 °C.
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MECHANICAL SPECIFICATION
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Size:
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210 x 120 x 60mm
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Input:
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Molex connector. (24V power, control and monitor are all at ground potential).
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Floating output:
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By twin flying screened (shielded) leads type URM43 isolation
up to 10kV, TV30 (HFxx20/30)
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Top | Detailed Photo |
Installation Notes
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