--- product_id: 72165572 title: "Instek GPS-3030DD 90W Single-Output Linear DC Power Supply with 0.39\" Dual Digital LED screen, 30V DC, 3 Amp" brand: "instek america corp" price: "1684.75 DT" currency: TND in_stock: true reviews_count: 3 category: "Industrial" url: https://www.desertcart.tn/products/72165572-instek-gps-3030dd-90w-single-output-linear-dc-power-supply store_origin: TN region: Tunisia --- # Instek GPS-3030DD 90W Single-Output Linear DC Power Supply with 0.39" Dual Digital LED screen, 30V DC, 3 Amp **Brand:** instek america corp **Price:** 1684.75 DT **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Instek GPS-3030DD 90W Single-Output Linear DC Power Supply with 0.39" Dual Digital LED screen, 30V DC, 3 Amp by instek america corp - **How much does it cost?** 1684.75 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/72165572-instek-gps-3030dd-90w-single-output-linear-dc-power-supply) ## Best For - instek america corp enthusiasts ## Why This Product - Trusted instek america corp brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Size:with 0.39" LED Display, 5 Output Amps, 30 Output Volts, 90 Output Watts The Instek GPS-3030DD single-output 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 one output that provides DC voltage up to 30V and current up to 3 amp. Potentiometer knobs on the unit's front panel allow for fine and coarse adjustment of the voltage and current output. Dual digital LED screens show voltage and current readings simultaneously and are readable in low light. The PSU features continuous or dynamic internal load selection for applications such as pulsed current. Terminals on the rear of the unit provide connection to an external device, such as a computer, for remote control. A power cord with a three-prong plug is included for connecting the PSU to a grounded outlet, and a test lead is included for testing applications. A built-in cooling fan helps prevent overheating, and overload protection and reverse polarity protection help prevent damage to the PSU and the device under test. SpecificationsNumber of outputs1Maximum voltage and current outputVoltage: 30VDC; Current: 3 ampLoad regulation, + or – (percent of output + offset)Less than or equal to 0.01% of voltage reading + 3mV (millivolts) when rating current is less than or equal to 3 amp; Less than or equal to 0.2% of current reading + 3mA (milliamp)Line regulation, + or – (percent of output + offset)Less than or equal to 0.01% of voltage reading + 3mV; Less than or equal to 0.2% of current reading + 3mAMeter accuracy+ or – (0.5% of reading + 2 digits)Temperature coefficientLess than or equal to 300 ppm per degree CRecovery timeLess than or equal to 100 μs (microseconds) following a 50% load change with a minimum load of 0.5 ampRipple and noise (5Hz to 1MHz)Less than or equal to 0.5mV RMS (root mean square) when rating current is less than or equal to 3 amp; Less than or equal to 1mV RMS when rating current is greater than 3 ampRipple currentLess than or equal to 3mA RMSPower requirements100V, 120V, 220V, 240VAC, + or – 10%, at 50 to 60HzStandards metEuropean Conformity (CE) markingWeight5kgDimensions145 x 128 x 285mm (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.What's in the Box?Instek GPS-3030DD power supply unit(1) GTL-105 test leadPower cordInstructions ## Features - Linear power supply unit provides a constant source of DC voltage and current for powering and testing electronic devices in research and development, production, and laboratory applications - One output provides an adjustable voltage of up to 30VDC or current up to 3 amp - Potentiometers on front panel provide fine and coarse adjustment of voltage and current output - Dual digital LED screens show voltage and current readings simultaneously and are readable in low light - Continuous or dynamic internal load selection for applications such as pulsed current ## Images ![Instek GPS-3030DD 90W Single-Output Linear DC Power Supply with 0.39" Dual Digital LED screen, 30V DC, 3 Amp - Image 1](https://images-na.ssl-images-amazon.com/images/I/51lDd-QTWKL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Completely Silent. Has No Fans *by S***K on April 17, 2015* Terrific power supply. Completely silent.I hate the fact that Amazon combines reviews for different products. My power supply has no fan, which I love. There is a large heatsink on the back where the power components are mounted. Nice controls, nice display. ### ⭐⭐⭐⭐⭐ great *by M***O on September 14, 2018* as expected ### ⭐⭐⭐⭐⭐ Five Stars *by W***L on April 23, 2016* Great --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/72165572-instek-gps-3030dd-90w-single-output-linear-dc-power-supply](https://www.desertcart.tn/products/72165572-instek-gps-3030dd-90w-single-output-linear-dc-power-supply) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-08*