Instek GTL-104 Current 4A-10A Test Lead

Instek GTL-104 Current 4A-10A Test Lead

This Instek GTL-104 Current 4A-10A Test Lead is Brand New and has full manufacturer's warranty.

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Stock # 56109-10
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Instek GPS Multi-Output Series Power Supplies

  • Quad Independent DC Output
  • Four LED Display with 3 Digits, Selectable for Two Sets Output Voltage and Current Display Simultaneously
  • Auto Series, Parallel and Tracking Operation
  • Constant Voltage and Constant Current Operation
  • Low Ripple and Noise
  • Overload and Reverse Polarity Protection
  • Selectable for Continuous/Dynamic Load
  • Output Enable/Disable Control
  • Rotation Speed of the Fan is Controlled by Heatsink Temperature
  • Jack Type Terminal for Europe (Option)


The Instek GPS regulated DC power supply series is designed to be used in applications such as powering operational amplifier, push-pull stages, logic circuit and definition systems where plus and minus voltages are required to track with an insignificant error. To represent an operation convenience, GPS-4302, GPS-4303 and GPS-4251 have four independent power supplies (while GPS-2303 has two and GPS-3303 has three) housed in a single package.

GPS-4302, GPS-4303 and GPS-4251 consist of four identical, independent, adjustable DC power supplies (while two for GPS-2303 and three for GPS-3303). A front panel switch selects one of three operation modes of independent, series and parallel. In the independent mode, the output voltage and current of each supply are controlled separately, and each supply is isolated up to 300V from output to chassis or output to output. In the tracking mode, both outputs are automatically connected in series or parallel, and the controls of the left supply adjust the magnitudes of both the positive and negative output voltages. Because the outputs are connected in a tracking configuration, any internal disturbance in the master supply (such as drift or ripple) will cause an equal percentage change in the outputs of both the supplies.

Each power supply (except CH3 for GPS-3303 and CH4 for GPS-4302, GPS-4303, and GPS-4251) is a completely transistorized, well-regulated, constant voltage/constant current supply that will provide full rated output voltage at the maximum output current or can be continuously adjusted throughout the output range. The front panel current controls can be used to establish the output current limit (overload or short circuit) when the supply is used as a constant voltage source (independent or tracking modes) and the voltage controls can be used to establish the voltage limit (ceiling) when the supply is used as a constant current source (independent mode only). The supply will automatically cross over from constant voltage to constant current operation (current limited operation in the tracking mode). Each power supply (CH1~CH4) has its own front panel meter that can measure output voltage or current. One power supply may be used as a CH1 supply controlling, one CH2 supplies furnishing various voltage or current for a system. When operate with the front panel mode switch in the tracking position, the instrument is automatically internally connected in auto-tracking configuration.

For audio production line, the continuous or dynamic load can be internally selected. When the connector (J111 & J309) is connected to "ON" position the unit is suitable for audio power Amplifier application (Normal setting to "OFF" position).

Product Family: GPS-4303, GPS4303, GPS 4303, GPS-4251, GPS4251, GPS 4251, GPS-3303, GPS3303, GPS 3303, GPS-2303, GPS2303, GPS 2303, GTL-104, GTL104, GTL 104, GTL-105, GTL105, GTL 105, GTL-203, GTL203, GTL 203

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

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Line Regulation≤ 0.01% + 3mV
Load Regulation≤ 0.01% + 3mV (rating current ≤ 3A)
≤ 0.02% + 5mV (rating current > 3A)
Ripple & Noise≤ 1mVrms 5Hz - 1MHz
Recovery Time≤ 100µS (50% Load change, Minimum load 0.5A)
Line Regulation≤ 0.2% + 3mA
Load Regulation≤ 0.2% + 3mA
Ripple & Noise≤ 3mArms
Tracking Error≤ 0.5% + 10mV of the Master
Series Regulation≤ 300mV
Load Regulation≤ 0.01% + 3mV
Ripple & Noise≤ 2mVrms 5Hz - 1MHz
GSP-4303 2.2V ~ 5.2V OUTPUT (CH3), GPS-3303 5V FIX OUTPUT (CH3), & GSP-4215 3V ~ 6V OUTPUT (CH3)
Line Regulation≤ 5mV
Load Regulation≤ 15mV
Ripple & Noise≤ 2mVrms, 5Hz - 1MHz
Voltage Accuracy± 5% rdg
Current OutputGPS-4303: 1A
GPS-3303: 3A
GPS-4215: 2.5A
GPS-4303/4215 8V - 15V OUTPUT (CH4)
Line Regulation≤ 5mV
Load Regulation≤ 10mV
Ripple & Noise≤ 2mVrms, 5Hz - 1MHz
Current Output1A
Digital3 digits 0.5" LED display
GPS-4303/3303/4251 Out ON Accuracy ±(0.5% rdg + 2 digits)
GPS-4303/3303/4251 Out OFF Accuracy ±(0.5% rdg + 8 digits)
GPS-2303 Accuracy ± (0.5% rdg + 2 digits)
Chassis and Terminal≤ DC 500V / 20MΩ
Chassis and AC Cord≤ DC 500V / 30MΩ
Power SourceAC 100V/120V/220V±10%, 230V±10%-6%, 50/60Hz
AccessoriesInstruction manual x 1
Power cord x 1
AccessoriesGPS-4303: Test lead GTL-104 x 2, GTL-105 x 2 or GTL-203 x 2, GTL-204 x 2
GPS-4251: Test lead GTL-105 x 4 or GTL-203 x 2, GTL-204 x 2
GPS-3303: Test lead GTL-104 x 3 or GTL-203 x 3
GPS-2303: Test lead GTL-104 x 2 or GTL-203 x 2
Dimensions & Weight255(W) x 145(H) x 265(D) mm, Approx. 7 kg

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Instek GPS Multi-Output Series Power Supplies

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