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HomeBench InstrumentsInstrumentation ModulesSmall Instrumentation ModulesSRS SIM928 Isolated Voltage Source

SRS SIM928 Isolated Voltage Source

SRS SIM928 Isolated Voltage Source
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SRS SIM928 Isolated Voltage Source
SRS SIM928 Isolated Voltage Source




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  • ±20 V isolated voltage source
  • Ultra-low noise output
  • Two switchable, recharging batteries for continuous operation
  • Battery lifetime: 1000 charge cycles
  • Output floats to ±40 V
  • Short-circuit protected
The SIM928 Isolated Voltage Source is ideal for applications where ultra-clean DC voltage is required. Voltage can be set between ±20 VDC with millivolt resolution, and the source can drive up to ±10 mA. The output circuit is optically isolated from all earth-referenced charging circuitry, providing maximum flexibility and noise immunity. The system can float to ±40 V, and the output is short-circuit protected.


At the heart of the SIM928 are two independent nickel-metal-hydride rechargeable batteries, each providing up to 12 hours of operation under full load conditions. When a battery is nearly depleted, the SIM928 automatically switches in a second battery. The switchover between batteries is virtually glitch-free, giving you uninterrupted power around the clock. The depleted battery is automatically charged to capacity in about 5 hours. The batteries are guaranteed for 1000 charging cycles, and SRS offers replacement battery sets.


In applications that occur over long time intervals, starting with a fully charged battery may be desirable. A battery charge override feature allows you to manually switch in the fully charged battery (assuming it is in "ready" state) at any time.


Banana binding posts are provided for the + terminal, - terminal and chassis ground.

Download datasheet »
Instrumentcenter Sweden AB, Box 233, 611 25 Nyköping - Sweden. | Tel: +46 155 26 70 30, Fax: +46 155 26 78 30
Delivery address: Folkungavägen 4, 611 34 Nyköping, Sweden
E-post:  International phone +46 155 26 70 30  Fax +46 155 26 78 30