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The KUAIQU KQ7901 Electrical Engineering Education Power Supply is designed for university laboratories, engineering teaching benches, and practical electronics courses. With an adjustable 0–80V output and 0–20A current range, this programmable DC power supply gives students and instructors flexible control over experimental power conditions.
The 4.3-inch TFT display presents voltage, current, and power information, while the built-in curve display helps users observe changing electrical parameters during experiments. With 100 memory groups, List sequence programming, and USB, RS232, and RS485 interfaces, the KQ7901 supports structured laboratory exercises, repeatable demonstrations, and computer-assisted electrical engineering education.
Adjustable DC Output for Engineering Education: Provides 0–80V and 0–20A output adjustment for a variety of compatible electrical engineering experiments.
4.3-Inch TFT Color Display: Displays key output parameters clearly for laboratory observation and instruction.
Electrical Parameter Curve Display: Visualizes two selected parameters from voltage, current, and power to support practical circuit analysis.
100 Memory Groups: Store and recall experimental settings for different courses and laboratory exercises.
List Sequence Programming: Configure multi-step output sequences for structured demonstrations and repeatable experiments.
Computer Communication: USB, RS232, and RS485 interfaces support compatible laboratory computer systems.
Remote Sense Compensation: Helps compensate for voltage drops in output leads when correctly connected.
Integrated Output Protection: OCP, OVP, reverse-polarity protection, and panel locking help protect equipment and settings.
University electrical engineering teaching laboratories
Undergraduate electrical circuit experiments
Engineering education workstations
Practical DC circuit instruction
Electronics laboratory training benches
Computer-assisted electrical engineering experiments
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Parameter
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Specification
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Model
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KQ7901-80-20
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Output Voltage Range
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0 ~ 80V Continuously Adjustable
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Output Current Range
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0 ~ 20A Continuously Adjustable
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Rated Power
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400W
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Ripple & Noise
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5 mV rms, 30 mV p-p
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Voltage Resolution (Setting & Readback)
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1 mV (0.001V)
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Current Resolution (Setting & Readback)
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1 mA (0.001A)
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Power Readback Resolution
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1 mW (＜ 100W); 10 mW (≥ 100W)
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Display Screen
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4.3-inch 5-Digit HD Color Screen
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Memory Groups
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100 Sets of Parameter Storage
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Programming Mode
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Panel Setting + USB File Import
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Working Mode
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Normal Mode / Forced CV Mode
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Communication Interface
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USB, RS232, Optional RS485
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Communication Protocol
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Modbus RTU
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Adjustable Baud Rate
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1200, 2400, 4800, 9600, 14400, 19200, 38400, 56000, 57600, 115200, 128000, 230400
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Fast Charge Ports
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USB-A + USB-C Dual Ports
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Protection Functions
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OVP, OCP, OTP, Short Circuit Protection, Reverse Polarity Protection, Panel Lock
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Cooling System
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Intelligent Temperature-Controlled Fan
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Input Voltage
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110V / 220V AC Switchable
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Continuous Operation
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24-hour Long-Term Stable Working Support
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Display Language
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Chinese / English Switchable
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30-Day return and refund guarantee (Refer to our Refund Policy), 2-year warranty (only available for orders purchased directly from kuaiquinstrument.com), lifetime technique support by KUAIQU.
Please feel free to reach us with any concerns:
Email: kuaiquinstrument@163.com
We strive to reply to you within 24 hours.
Shenzhen Kuaiqu Electronic Co., Ltd. was founded in 2014 and is located in Shenzhen City, Guangdong Province. It is a scientific and technological enterprise integrating,production and sales. Specializing in the production of DC stabilized power supply, variable frequency power supply, switching power supply, program-controlled power supply and other 100 kinds of measuring teaching instruments and industrial special equipment.
We are committed to delivering premium products and exceptional customer service, striving to be your most reliable and intelligent assistant.
At KUAIQU, we are committed to providing our customers with the best value for their purchases. To ensure you always get the best price, we offer a 30-day price guarantee on all products purchased directly from kuaiquinstrument.com. This policy aims to give you confidence and peace of mind when shopping with us.
Our 30-day price guarantee means that if you purchase a product from kuaiquinstrument.com and the price of that product drops within 30 days of your purchase date, you are eligible for a refund of the price difference of the products. (Prices are based on USD. No refunds will be given for price changes in other currencies due to exchange rate fluctuations.)
If you notice that the price of a product you purchased from kuaiquinstrument.com has dropped within 30 days, follow these steps to apply for a refund of the price difference:
At KUAIQU, we strive to provide our customers with high-quality products and exceptional customer service. Our 30-day price guarantee is just one of the ways we ensure you get the best value for your investment. Shop confidently with KUAIQU, knowing that you are always getting the best deal available.
Thank you for choosing KUAIQU. If you have any questions or need further assistance, please do not hesitate to contact our customer support team at kuaiquinstrument@163.com.
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