Sell Test Equipment

PFR-100L-GL Instek DC Power Supply


The PFR-100L-GL is a 100 W DC power supply from Instek. Supplies DC Voltage and Current to test, design, and troubleshoot electric and electronic circuits. Applications include Burn In, QA, ATE, Research, Design, and Education to name a few.

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Additional Features:

  • Fanless Multi-Range DC Power Supply with GPIB and LAN
  • Rated Output Voltage: 50V 
  • Rated Output Current: 10A
  • Rated Output Power: 100W
  • Constant Power Output for Fivefold Multi-Range (V&I) Operation
  • Natural Convection Cooling Design (Fanless Structure)
  • Preset Memory Function
  • Output ON/OFF Delay Function
  • CV, CC Priority Mode
  • Adjustable Slew Rate for Voltage and Current
  • Bleeder Circuit Control
  • Protection: OVP, OCP, AC FAIL and OTP
  • Support Front Panel and Rear Panel Output
  • Built-in USB and RS-232/485 Interface; Optional LAN+GPIB
  • Web Server Monitoring and Control
  • External Analog Control and Monitor Function
  • Remote Sensing Function
  • Warranty: 2 Years on Instrument (Excludes probes)


  • LED Module Test and Reliability Test
  • Charging Test for Battery Cell
  • DC/DC Converter Applications
  • DC Motor Test Applications
  • Solar Module Quality Test

Standard Accessories:

  • CD (User Manual, Programming manual) x 1, Power cord x 1
  • GTL-134 test lead x 1
  • Accessory packages: GTL-104A test lead & PFR-001 accessory kit (for PFR-100L only)

Optional Accessories:

  • GTL-258 GPIB Cable, 2000mm
  • GTL-246 USB Type A to Type B cable
  • PSU-232 RS-232 Cable with DB9 Connector Kit
  • PSU-485 RS-485 Cable with DB9 Connector Kit
  • GRA-431 Rack Mount Kit


Regulation (CV)

  • Load Regulation (From No-load to Full-load, constant input voltage. Measured at the sensing point in Remote Sense): 10mV
  • Line Regulation (At 85 ~ 132Vac or 170 ~ 265Vac, constant load): 3mV

Regulation (CC)

  • Load Regulation (For load voltage change, equal to the unit voltage rating, constant input voltage): 10mA
  • Line Regulation (At 85 ~ 132Vac or 170 ~ 265Vac, constant load): 8mA

Ripple and Noise (Measured with JEITA RC-9131B (1:1) probe)

  • Vp-p (Measurement frequency bandwidth is 10Hz to 20MHz): 50mV
  • Vr.m.s.(Measurement frequency bandwidth is 5Hz to 1MHz): 4mV
  • A r.m.s.: 10mA

Programming Accuracy

  • Voltage 0.1% of setting +: 40mV
  • Current 0.2% of setting +: 20mA

Measurement Accuracy

  • Voltage 0.1% of reading +: 40mV
  • Current 0.2% of reading +: 20mA

Response Time

  • Rise Time (From 10%~90% of rated output voltage, with rated resistive load), Rated load: 50ms
  • Fall Time (From 90%~10% of rated output voltage, with rated resistive load), Rated load: 100ms
  • No Load: 500ms
  • Transient Response Time (Time for output voltage to recover within 0.1% + 10mV of its rated output for a load change from 50 to 100% of its rated output current): 1.5ms

Programming Resolution

  • Voltage: 2mV
  • Current: 1mA

Measurement Resolution

  • Voltage: 2mV
  • Current: 1mA

Protection Function

  • Over Voltage Protection (OVP) Setting range: 5~55V
  • Over Current Protection (OCP) Setting range: 1~11A
  • Under Voltage Limit (UVL) Setting range: 0~52.5V
  • Over Temperature Protection (OTP) Operation: Turn the output off
  • Low AC Input Protection (AC-Fail) Operation: Turn the output off
  • Power Limit (Power Limit) Operation: Turn the output off

Front Panel Display Accuracy, 4 Digits

  • Voltage 0.1% of reading +: 40mV
  • Current 0.2% of reading +: 20mA


  • Operating Temperature: 0°C to 40°C
  • Storage Temperature: -20°C to 70°C
  • Operating Humidity: 20% to 80% RH; No condensation
  • Storage Humidity: 20% to 85% RH; No condensation

Readback Temp. Coefficient (After A 30 Minute Warm-up)

  • Voltage: 100ppm/°C
  • Current: 200ppm/°C


  • Analog Control: Yes
  • Interface: USB, RS-232/RS-485; Factory option: LAN/GPIB
  • AC Input: 85~265VAC, 47~63Hz, single phase
  • Dimensions: 70 (W) x 124 (H) x 300 (D)mm

The PFR-100LGL, a small and high-performance programmable D.C. power supply, adopts natural convection design to dissipate heat. The fanless structure allows users to focus on their experiments and tests in a quiet environment. A fanless power supply will not suck in dust and foreign objects, therefore, PFR-100 series has a longer life cycle compared with that of power supplies with fan.

The PFR-100 series is a power supply with a five-fold rated power that allows users to self-define voltage and current under rated power conditions so as to satisfy them with wider voltage and current operational ranges. PFR-100 series, with rated 100W, provides two models: PFR-100L- maximum output voltage of 50V (at 2A) or maximum output current of 10A (at 10V); PFR100M- maximum output voltage of 250V (at 0.4A) or maximum output current of 2A (at 50V).

The PFR-100 series provides front and rear panel output terminals. The front panel output terminal helps users shorten test lead replacement time while conducting adjustment on front panel's function keys. The rear panel output terminal facilitates an easy wiring operation for rackmount assembly. 3U height, 70mm width and 2.5KG in weight have greatly elevated PFR-100 series portability. Furthermore, the multi-drop mode allows users to control up to 31 PFR-100 series without using switch/Hub that help users save the equipment cost.

The LAN interface for PFR-100 is Ethernet port. PFR-100 also has a built-in web server and intuitive user interface. Users, via general browsers including Internet Explorer, Mozilla Firefox or Android cellular phones, can monitor PFR-100's test and measurement anywhere. Users not only can remotely monitor PFR-100 via internet, but also remotely observe and adjust their operating PFR-100s in the lab from your home. The outputs of PFR-100 series can be monitored including OVP, OCP, UVL; and the system information can be checked such as unit's serial number, firmware edition and internet setting. Users can remotely adjust PFR-100 settings, including output voltage/current, the slew rate for voltage/current, Bleeder circuit control, OCP, delayed time for output voltage and Buzzer settings.

The PFR-100 series provides special functionalities to meet test requirements for different load's characteristics. The CC priority mode can be applied for DUTs with diode characteristics to prevent DUT from being damaged by inrush current. A slow rise time for voltage can also protect DUT from inrush current, especially for tests on capacitive load. When power is off or load is disconnected, the activation of Bleeder circuit control will allow the bleeder resistor to consume filter capacitor's electricity. Without the bleed resistor, power supply's filter capacitor may still have electricity that is a potential hazard. For automatic testing equipment systems, the bleeder resistor allows PFR-100 series to rapidly discharge to prepare itself for the next operation.

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