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BK Precision Model 1550 Switching DC Bench Power Supply with USB Charger Output 1-36V, 0-3A
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Personal Greeting

The model 1550 is a compact 108 watt bench power supply delivering 1-36V and 0-3A from its main isolated output. A unique feature of the 1550 bench power supply is the USB charging port located on the front panel allowing the user to charge a cell phone or MP3 player. Clean power and quiet operation make this power supply ideal for laboratories, work shops, and schools where bench space is limited.

Ordering Information: Base model 1550 operates with 110 V input only. For 220 V operation, request model 1550-220V at time of order.

  • USB Charging port on front panel
  • Rear panel security loop
  • Compact design frees up bench space
  • Output On/Off control
  • Large bright easy to read LCD display
  • Constant voltage and constant current operation
  • Overvoltage protection
  • 230 VAC version with banana style outputs (model 1550-220V)
Specifications 1550
MAIN OUTPUT
Output Voltage Adjustable Range 1.0 – 36 VDC
Output Current Adjustable Range 0 – 3 A
Voltage Regulation
Load (10 % to 100 %) ±50 mV
Line (min to max) ±20 mV
Ripple ±5 mV rms
Noise (Peak to Peak) ±50 mV
Current Regulation
Load (10 % to 100 %) ±20 mA
Line (min to max) ±20 mA
USB OUTPUT
Output Voltage 5 V (±10 %)
Output Current 400 mA (±10 %)
Load Voltage Regulation 80 mV (±10 %)
Ripple & Noise (no load rms) 8 mV (±10 %)
OTHER
AC Input  100 – 120 Vac (50~60 Hz)*
Efficiency at Max Power 83 % (±10 %)
Voltmeter and Ammeter Display 3 Digit
Voltmeter Accuracy ±1 % of rdg. ± 5 digits
Switching Operation Frequency 80 kHz to 120 kHz
Ammeter Accuracy ±1 % of rdg. ± 5 digits
Full Load Input Current at 120 Vac 1.8 A (±10 %)
LCD Indication CC, CV, Amp, Volt, Output ON-OFF
GENERAL
Protection Short Circuit, Overload, Over Temperature, Over Voltage
Dimensions (W x H x D) 2.8” x 6.0” x 9.8” (70 x 150 x 250 mm)
Weight 4.4 Lbs. (2 kgs)
One-Year Warranty
Supplied Accessories User manual and power cord

*For 230V input, order model number 1550-220V