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Package Size: 14.9 x 14.3 x 10.2 inches
The Instek GPS-3303 triple-output programmable linear DC power supply unit provides a constant source of DC voltage and current for powering and testing electronic devices. The power supply unit (PSU) has two adjustable outputs that each provide DC voltage up to 30V and current up to 3 amp. A third output provides a fixed voltage of 5VDC voltage and up to 3 amp current. Controls on the unit's front panel allow for fine and coarse adjustment of the voltage and current output of the two 0 to 30V outputs. LED screens show voltage and current readings for two outputs simultaneously, and the displays are readable in low light. The outputs can operate independently, and the two 0 to 30V outputs can be connected in series to supply more voltage or in parallel to supply more current. A power cord with a three-prong plug is included for connecting the PSU to a grounded outlet, and test leads are included for testing applications. A built-in cooling fan helps prevent overheating, and the fan automatically switches to a slower speed to produce less noise in low- or no-load conditions. Overload protection, reverse polarity protection, and an output on/off switch help prevent damage to the PSU and the device under test. For regulation, accuracy, and ripple and noise characteristics, see the unit's datasheet.
|Number of outputs||3|
|Maximum voltage and current output, outputs 1 and 2||Voltage: 30VDC; Current: 3 amp|
|Voltage and current output, outputs 3||Voltage: 5VDC; Current: 3 amp|
|Recovery time, outputs 1 and 2||Less than or equal to 100 μs (microseconds) following a 50% load change with a minimum load of 0.5 amp|
|Tracking error||Less than or equal to 0.5% of output 1 reading + 10mV (millivolts)|
|Power requirements||100V, 120V, 220V, or 230VAC + or – 10% at 50 to 60 Hz|
|Standards met||European Conformity (CE) marking|
|Dimensions||145 x 255 x 265mm (H x W x D)|
H is the vertical distance from lowest to highest point, W is the horizontal distance from left to right, and D is the horizontal distance from front to back.
Power supply units (also known as PSUs, AC power supplies, DC power supplies, and battery eliminators) provide AC or DC voltage to power or test devices such as tools, appliances, and electronic components. The PSU draws energy from a line source such as a wall socket and converts it to a constant, specified amount of voltage or current that is then outputted to a connected device. In general, a power supply unit will be classified as either a linear PSU (also known as a linear regulation or line-frequency PSU) or a switched PSU (also known as a switching-mode power supply, SMPS, or switcher). Typically, a linear PSU has a simpler design and provides a faster transient response time and less electrical interference and noise than a switched PSU. A switched PSU is often smaller, lighter, and more efficient than a linear PSU and generates less heat. The transient response time of a PSU indicates how quickly the PSU can resume the desired constant output after a sudden change in input. Ripple voltage or current indicates how much unfiltered noise and AC voltage or current is present at the output of a filtered power supply operated at full load. The temperature coefficient is the percent average change in output voltage per degree centigrade of change in ambient temperature. Fuses, current limiters, and other forms of overload protection can be built into the PSU to help protect against voltage spikes or short-circuiting.
GW Instek manufactures test and measurement equipment such as oscilloscopes, spectrum analyzers, signal testers, and video surveillance systems. The company, founded in 1975 and headquartered in Taipei, Taiwan, meets International Organization for Standardization (ISO) standards 9002 and 14001.
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