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BOP High Voltage The Kepco Model BOP 500DM and BOP 1000DM are high voltage power sources, up to 500V or 1000V, respectively. These combine the capabilities of fast programmable power supplies with a Class A output stage, which can respond bidirectionally from zero. The BOP-HV can be operated in either a "voltage stabilizing" or "current stabilizing" operating mode (selectable by a front panel switch). These power supplies offer ultra low noise and ultra low ripple at the output and are MIL-STD-461 compliant.

The DM suffix specifies digital meters. The M suffix specifiying analog meters, is available only for BOP 500M while supplies last. DM and M models are identical except for the meters.

For lower voltage, higher current applications, Kepco's Series BOP is available in 100W, 200W and 400W sizes.

The term bipolar means that the voltage and current outputs can be made to vary smoothly and linearly through their entire plus and minus rated ranges, passing through zero with no polarity switching.

They can source or sink up to 100% of their current rating at any voltage setting, depending on the duty cycle. Please refer to the plot of voltage vs. current, Figure 1. The separate bipolar voltage and current control channels are backed by four independently adjustable (and programmable) limits. Four front panel LEDs tell you whether the unit is operating in the voltage or current mode, or against the voltage limit or current limit. A mode switch on the front panel selects the operating channel.

BOP-HV are CE Marked per the Low Voltage Directive (LVD), EN61010-1 and the EMC Directives. See applicable Declaration of Conformity and the Conditions of Conformance.


(Current limiting either front panel adjusted or remotely programmed using the current limiting channel).

  • High speed, bipolar d-c voltage source (remote or locally controlled output).
  • Scaling or summing amplifier with or without d-c bias.


(Voltage limiting either front panel adjusted or remotely programmed using the voltage limiting channel).

  • High speed, bipolar d-c current source (remote or locally controlled output).
  • Amplification of a-c currents with or without d-c bias.


NEWKepco's SN 488 Digital Programmer, available as an accessory, allows remote programming of BOP 500DM or 1000DM via a GPIB (IEEE 488) interface. The digital programmer converts either a hexadecimal (12-bit binary) or decimal (3-digit BCD) input to an analog voltage which controls the BOP-HV. The SN 488 is available with either single or dual channel operation, for controlling the BOP-HV voltage channel, current channel, or both, via the GPIB.


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