Lake Shore Electromagnet Power Supply UPS ...
Lake Shore - Electromagnet Power Supply UPS | 643
The Model 643 electromagnet power supply is a linear, bipolar current source providing true 4-quadrant output, eliminating the need for external switching or operator intervention to reverse current polarity.
Features of this product
- Low noise
- D Compact design
- D CE mark certification
- D ±70 A/±35 V, 2450 W
- D Built-in fault protection
- D Analog programming and
- IEEE-488 and USB interfaces
- D Bipolar, linear, true 4-quadrant output
- D 0.1 mA of programmed current resolution
- D Can be modulated to frequencies up to 0.17 Hz at ±70 A
Specifications of this product
- Type: Bipolar, 4-quadrant, DC current source
- Current generation: Fully linear regulation with digital setting and analog control
- Current range: ±70 A
- Compliance voltage (DC): ±35 V nominal
- Power: 2450 W nominal
- Nominal load: 0.5 O, 0.5 H
- Maximum load resistance: 0.6 O for ±70 A DC operation at +10% to -5% line voltage
- Minimum load resistance: 0.4 O for ±70 A DC operation at +5% to -10% line voltage
- Load inductance range: 0 H to 1 H
- Current ripple: 5 mA RMS (0.007%) at 70 A into nominal load
- Current ripple frequency: Dominated by the line frequency and its harmonics
- Temperature coefficient: ±15 ppm of full scale/°C
- Line regulation: ±60 ppm of full scale/10% line change
- Stability (1 h): 1 mA/h (after warm-up)
- Stability (24 h): 5 mA/24 h (typical, dominated by temperautre coefficient and line regulation)
- Isolation: Differential output is optically isolated from chassis to prevent ground loops
- Slew rate: 50 A/s into nominal load, 100 A/s maximum into a resistive load
- Compliance voltage (AC): ±43 V at +10% to -5% line
- Settling time: <1 s for 10% step to within 1 mA of output into nominal load
- Modulation response: =0.17 Hz at ±70 A sine wave into nominal load, <0.02% THD; =1 Hz at ±10 A sine wave into nominal load, <0.05% THD; =10 Hz at ±1 A sine wave into nominal load, <0.10% THD
- Attenuation: -0.5 dB at 10 Hz
- Protection: Short circuit, line loss, low line voltage, high line voltage, output over voltage, output over current, and over temperature
- Connector: Two lugs with 6.4 mm (0.25 in) holes for M6 or 0.25 in bolts
To contact Coherent Scientific about Lake Shore Electromagnet Power Supply UPS | 643 use Get a quote.
Features of this product
- Low noise
- D Compact design
- D CE mark certification
- D ±70 A/±35 V, 2450 W
- D Built-in fault protection
- D Analog programming and
- IEEE-488 and USB interfaces
- D Bipolar, linear, true 4-quadrant output
- D 0.1 mA of programmed current resolution
- D Can be modulated to frequencies up to 0.17 Hz at ±70 A
Specifications of this product
- Type: Bipolar, 4-quadrant, DC current source
- Current generation: Fully linear regulation with digital setting and analog control
- Current range: ±70 A
- Compliance voltage (DC): ±35 V nominal
- Power: 2450 W nominal
- Nominal load: 0.5 O, 0.5 H
- Maximum load resistance: 0.6 O for ±70 A DC operation at +10% to -5% line voltage
- Minimum load resistance: 0.4 O for ±70 A DC operation at +5% to -10% line voltage
- Load inductance range: 0 H to 1 H
- Current ripple: 5 mA RMS (0.007%) at 70 A into nominal load
- Current ripple frequency: Dominated by the line frequency and its harmonics
- Temperature coefficient: ±15 ppm of full scale/°C
- Line regulation: ±60 ppm of full scale/10% line change
- Stability (1 h): 1 mA/h (after warm-up)
- Stability (24 h): 5 mA/24 h (typical, dominated by temperautre coefficient and line regulation)
- Isolation: Differential output is optically isolated from chassis to prevent ground loops
- Slew rate: 50 A/s into nominal load, 100 A/s maximum into a resistive load
- Compliance voltage (AC): ±43 V at +10% to -5% line
- Settling time: <1 s for 10% step to within 1 mA of output into nominal load
- Modulation response: =0.17 Hz at ±70 A sine wave into nominal load, <0.02% THD; =1 Hz at ±10 A sine wave into nominal load, <0.05% THD; =10 Hz at ±1 A sine wave into nominal load, <0.10% THD
- Attenuation: -0.5 dB at 10 Hz
- Protection: Short circuit, line loss, low line voltage, high line voltage, output over voltage, output over current, and over temperature
- Connector: Two lugs with 6.4 mm (0.25 in) holes for M6 or 0.25 in bolts
To contact Coherent Scientific about Lake Shore Electromagnet Power Supply UPS | 643 use Get a quote.
The Lake Shore Model 643 is a linear, bipolar DC current source for electromagnets, with digital setting and analog control. Its true four-quadrant output lets the supply reverse polarity directly, removing the need for external switching or operator intervention. Electromagnet setups needing fault protection have safeguards against short circuits, line loss, voltage, current and temperature faults.
- ±70 A current range; ±35 V nominal DC compliance voltage
- 2,450 W nominal power
- 0.1 mA programmed-current resolution
- 50 A/s slew rate into nominal load
- Modulates up to 0.17 Hz at ±70 A
Source: listing by Coherent Scientific on IndustrySearch · Updated 27 Oct 2026
AI Overview is generated by artificial intelligence and may contain mistakes.
Written by AI from the listing by Coherent Scientific on IndustrySearch. It is meant to use only what that listing says, but it can still get details wrong, so check them with the supplier before you buy.
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- VIC
- QLD
- SA
- WA
- NT
- ACT
- TAS
- New Zealand
- Papua New Guinea
- Afghanistan
- Albania
- Algeria
- Andorra
- Angola
- Antigua and Barbuda
- Argentina
- Armenia
- Austria
- Azerbaijan
- Bahamas
- Bahrain
- Bangladesh
- Barbados
- Belarus
- Belgium
- Belize
- Benin
- Bhutan
- Bolivia
- Bosnia and Herzegovina
- Botswana
- Brazil
- Brunei
- Bulgaria
- Burkina Faso
- Burma
- Burundi
- Cabo Verde
- Cambodia
- Cameroon
- Canada
- Central African Republic
- Chad
- Chile
- China
- Colombia
- Comoros
- Congo (Brazzaville)
- Congo (Kinshasa)
- Costa Rica
- Côte d'Ivoire
- Croatia
- Cuba
- Cyprus
- Czechia
- Denmark
- Djibouti
- Dominica
- Dominican Republic
- Ecuador
- Egypt
- El Salvador
- Equatorial Guinea
- Eritrea
- Estonia
- Ethiopia
- Fiji
- Finland
- France
- Gabon
- Gambia
- Georgia
- Germany
- Ghana
- Greece
- Grenada
- Guatemala
- Guinea
- Guinea-Bissau
- Guyana
- Haiti
- Holy See
- Honduras
- Hungary
- Iceland
- India
- Indonesia
- Iran
- Iraq
- Ireland
- Israel
- Italy
- Jamaica
- Japan
- Jordan
- Kazakhstan
- Kenya
- Kiribati
- Korea, North
- Korea, South
- Kosovo
- Kuwait
- Kyrgyzstan
- Laos
- Latvia
- Lebanon
- Lesotho
- Liberia
- Libya
- Liechtenstein
- Lithuania
- Luxembourg
- Macedonia
- Madagascar
- Malawi
- Malaysia
- Maldives
- Mali
- Malta
- Marshall Islands
- Mauritania
- Mauritius
- Mexico
- Federated States of Micronesia
- Moldova
- Monaco
- Mongolia
- Montenegro
- Morocco
- Mozambique
- Namibia
- Nauru
- Nepal
- Netherlands
- New Zealand
- Nicaragua
- Niger
- Nigeria
- Norway
- Oman
- Pakistan
- Palau
- Panama
- Papua New Guinea
- Paraguay
- Peru
- Philippines
- Poland
- Portugal
- Qatar
- Romania
- Russia
- Rwanda
- Saint Kitts and Nevis
- Saint Lucia
- Saint Vincent and the Grenadines
- Samoa
- San Marino
- Sao Tome and Principe
- Saudi Arabia
- Senegal
- Serbia
- Seychelles
- Sierra Leone
- Singapore
- Slovakia
- Slovenia
- Solomon Islands
- Somalia
- South Africa
- South Sudan
- Spain
- Sri Lanka
- Sudan
- Suriname
- Swaziland
- Sweden
- Switzerland
- Syria
- Taiwan
- Tajikistan
- Tanzania
- Thailand
- Timor-Leste
- Togo
- Tonga
- Trinidad and Tobago
- Tunisia
- Turkey
- Turkmenistan
- Tuvalu
- Uganda
- Ukraine
- United Arab Emirates
- United Kingdom
- United States
- Uruguay
- Uzbekistan
- Vanuatu
- Venezuela
- Vietnam
- Yemen
- Zambia
- Zimbabwe
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