1611 BK Precision DC Power Supply


Additional Features:

  • Output Voltage: 0 to 50 VDC, coarse and fine adjustment
  • Output Current: 0 to 2A, 0 to 0.5A
  • Laboratory Quality: Excellent regulation, low ripple
  • Power Requirements: 100/120/220/240 VAC±10%, 50/60 Hz
  • Power Consumption: Approximately 190 Watts or les at full load
  • Protection: Reverse polarity protection; current limiting
  • Temperature Range
  • Operation: 0° to 40° C < 80° RH
  • Storage: -15 DEG to +70° C < 70° RH
  • Dimensions: 172 x 119 x 305 mm; 6-3/4 x 4-11/16 x 12"

Constant Voltage Operation

  • Voltage Regulation: Line (108-132): ≤ 0.01% + 3mV; Load (no load to full load): ≤ 0.01% + 5 mV
  • Recovery Time: ≤ 100µs typical
  • Ripple Voltage: RMS ≤1 mV
  • Temperature Coefficient 0° to +40° C: ≤300 PPM/° C

Constant Current Operation

  • Adjustable Current Limits: 0% to 100% (0A to 2A)
  • Current Regulation
  • Line (108-132V): ≤0.2% + 3 mA
  • Load: ≤0.2% + 3 mA
  • Current Ripple: ≤3 mA typical



  • Range: 0 to 52V
  • Accuracy: ±-2.5%


  • Hi Range: 0 to 2.2A
  • Lo Range: 0 to 0.55A
  • Accuracy: ± 2.5%

Constant Voltage or Constant Current

Provides regulated dc voltage output or regulated dc current output. Crossover is smooth and automatic.

Two Current Ranges

HI-LO switch selects full output (0-2 A), or one quarter output (0-0.5 A). LO range improves current settability and meter resolution at lower current values. Switch simultaneously selects range of adjustment and corresponding meter scale.

Built-In Metering

Two large, easy-to-read meters continuously monitor output voltage and current.

LED Indicators

Act as pilot light and identify mode of operation.


Limits internal dissipation for higher reliability.

Isolated Output

Either polarity may be floated or grounded.

Overload Protection

Fully adjustable current limiting (from 0% to 100% of maximum output current) protects circuit under test and the power supply.

Reverse Polarity Protection

Prevents damage to power supply from external voltage of reverse polarity.


Modern functional styling. Configuration conserves bench space and aids portability. Logical, convenient layout of controls.

The BK Preclsion Model 1611 DC Power Supply is a high quality general purpose dc power source. The power supply provides 0-50 volts dc output, adjustable with both coarse and fine controls for precise settability. The current output of the Model 1611 is 0-2 amps. Two current ranges, HI and LO, provide excellent current settability and meter resolution. Two large panel-mounted meters continuously monitor the output voltage and current.

The power supply exhibits excellent regulation and low ripple characteristics. The circuit design incorporates a preregulator, which greatly reduces internal power dissipation at low output voltages. The styling is both attractive and functional. The mechanical configuration conserves bench space and allows for easy portability.

The instrument may be used in constant voltage or constant current applications. The crossover from constant voltage to constant current modes is smooth and automatic. LED's indicate the "CV" (constant voltage) or "CC" (constant current) mode of operation. In constant voltage applications, a current limit may be preset. When load variations cause the current to reach the preset limit, the unit then regulates output current rather than output voltage. Current limits are adjustable from 0% to 100% of maximum. In constant current applications, the maximum voltage may be preset.
When load variations cause current to drop below the regulated value, the unit reverts to regulated voltage operation at the preset value. Reverse polarity protection prevents accidental damage to the power supply from improper connection to an external voltage, and current limiting protects the equipment being powered, as well as the power supply.

The output is isolated from chassis and earth ground, which permits full flexibility of connections. When needed, the <+) or (-) polarity may be strapped to ground, or either polarity may be floated to an external voltage. Two supplies may be connected in series as a 0-to-100 volt power source, or two supplies may be connected in parallel, with suitable balancing resistors, for up to twice the output current. The power supply is well suited for a wide variety of electrical and electronics applications, including service shops, engineering labs, production testing, school laboratories, and home use by hobbyists.

More Information
ManufacturerBK Precision
Current2 A
Voltage50 V
Power100 W
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