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MS Series

Low Cost
Output Voltages up to 3kV
3 Watts Power Rating
Positive or Negative Polarity
Arc and Continuous Short Circuit Protected
Low Stored Energy
High Reliability
Internal 5V Reference
OEM Customization Available

Certifications & Compliance

3W DC-DC High Voltage Power Supplies

Spellman’s MS Modules have been designed for printed circuit board mounting with high reliability, small size and light weight. The MS 3W modules provide well regulated, low ripple, high stability output voltages ranging from 300V to 3kV in a versatile, compact and cost-effective design. The modules incorporate remote control and arc & short-circuit protection. Radiated pickup is eliminated by sealing each module in an aluminum enclosure.

Options

Isolated Input to Output
Maximum Isolation Voltage:
40V for units ≤1kV
100V for units >1kV
Note: this option is only available for certain models, please consult Spellman for availability.

Specifications
Models
How to Order
Downloads

Specifications

Input Voltage:
+12Vdc ±1V.
Input Current:
< 0.65A at full output.
Output Voltage:
Continuously adjustable over each entire range Models available in either positive or negative polarity. See table for voltage ranges.
Voltage Regulation:
Line: 0.005% for input change of 1V. (<0.01% for MS0.3 units)
Load: 0.05% for 100μA to full load change at maximum voltage. (<0.1% for MS0.3 units)
Ripple: See Models table
Temperature Coefficient: 50ppm/°C typical.
Stability: < 0.05%/8 hrs at constant operating conditions after one hour warm-up.
Dimensions:
Units ≤1kV:
.87”H x 2.1”W x 3.1”D (23mm x 53mm x 78mm).
Units >1kV:
1.1”H x 2.36”W x 4.2”D (28mm x 60mm x 106mm).
Weight:
Units ≤ 1kV:
0.2lb (80g).
Units >1kV:
0.4lb (160g).
Regulatory Approvals:
Compliant to EEC Low Voltage Directive. UK Conformity Assessed. RoHS Compliant.

Models

MS SELECTION TABLE

Output Voltage (V)	Output Current (mA)	Ripple V (p‑p)	Model
300	10	0.05	MS0.3*12/C
500	6	0.05	MS0.5*12/C
750	4	0.075	MS0.75*12/C
1000	3	0.10	MS1*12/C
1500	2	0.15	MS1.5*12/C
2000	1.5	0.20	MS2*12/C
2500	1.2	0.25	MS2.5*12/C
3000	1	0.30	MS3*12/C

How to Order

How to Order:
MSXX12/C/I Where: XX is the Output voltage (see selection table) is the polarity: P for positive / N for negative /I is the floating output option, if required Note: For specific model and option availability across the range, please consult Spellman Sales Examples: MS2P12/C, MS0.3P12/C/I

Downloads

Mass Spectrometry Brochure

Typical Applications

Photomultiplier Tubes
Precision Lenses
Image Intensifiers
Nuclear Instruments
Spectroscopy

Service Solution Brochure

Spellman Repair Centers, Extended Warranty Programs, Preventative Maintenance Programs, Calibration Services and more.

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2026 High Voltage Reference Manual

We compiled all of our useful FAQ’s, application notes, articles, technical papers and three glossaries into a single handy reference guide.

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