KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing
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KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing
KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing
KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing
KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing
KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing
KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing
KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing

KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing

$99.99
$99.99
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Input Voltage: AC110V(±10%)
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KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing

KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing

$99.99
KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing
KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing
KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing
KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing
KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing
KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing

KUAIQU SPS-C1203S 120V 3A 360W Precision DC Test Supply with OVP for DC-DC Converter Testing

$99.99
Input Voltage: AC110V(±10%)
Product Details

Download English Manual (PDF)

Click the link above to get the full user guide for this product.

KUAIQU SPS-C1203S 120V 3A 360W

Precision DC Test Supply with OVP for 

DC-DC Converter Testing

The KUAIQU SPS-C1203S is a 120V 3A 360W Precision DC Test Supply designed for DC-DC Converter Testing and compatible power conversion circuit applications. With a 0–120V adjustable output range, it provides flexible DC input conditions for evaluating compatible DC-DC converters, power modules, and related electronic circuits within the rated output range.

Equipped with Precision Encoder adjustment, HD 4-Digit Display, Independent Output Button, and multiple protection functions, the SPS-C1203S allows users to configure voltage and current parameters accurately while monitoring real-time electrical values during converter testing and circuit evaluation.

Key Features

0–120V Adjustable Output for DC-DC Converter Testing

The SPS-C1203S provides a 0–120V adjustable DC output range, allowing users to establish different DC input conditions for compatible DC-DC converter testing. The wide adjustment range helps engineers evaluate converter operation under different supply voltage conditions within the rated specification.

3A Current and 360W Power Capability

With up to 3A output current and 360W maximum power, the SPS-C1203S provides adjustable DC power for compatible DC-DC converters and power conversion circuits. Users can set voltage and current parameters according to the requirements of the connected device under test.

Precision Encoder for Accurate Voltage and Current Adjustment

The SPS-C1203S features V-COARSE, V-FINE, A-COARSE, and A-FINE adjustment controls. Coarse adjustment helps users quickly reach the required test range, while fine adjustment supports more precise voltage and current setting changes during converter testing.

HD 4-Digit Display for Real-Time Parameter Monitoring

The HD 4-Digit Display provides real-time readings of output voltage, current, and power. During DC-DC Converter Testing, users can monitor electrical parameters while adjusting different input conditions for the connected converter.

Independent Output Button for Controlled Test Setup

The Independent Output Button allows users to configure voltage and current settings before enabling DC output. This helps prepare the required test conditions before power is supplied to the connected DC-DC converter or power circuit.

Wide Voltage Adjustment for Converter Input Evaluation

DC-DC converters may require different input voltage conditions depending on their design and application. The adjustable 0–120V output allows users to create different DC supply conditions within the rated operating range for compatible converter evaluation.

OVP and OCP Protection for Testing Safety

The SPS-C1203S includes Over-Voltage Protection (OVP) and Over-Current Protection (OCP), providing additional protection when abnormal voltage or current conditions occur during testing.

Multiple Protection Functions

The SPS-C1203S includes Over-Voltage Protection, Over-Load Protection, Over-Current Protection, Short Circuit Protection, Over-Temperature Protection, and Grounding Protection. These protection functions help protect the power supply and connected equipment during abnormal operating conditions.

Cooling Fan for Stable Bench Operation

The built-in Cooling Fan helps dissipate heat generated during operation, supporting continuous bench testing within the rated operating conditions.

Applications

DC-DC Converter Testing

The SPS-C1203S provides a Precision DC Test Supply for evaluating compatible DC-DC converters within its rated 0–120V, 0–3A, and 360W output range.

Converter Input Voltage Testing

Users can adjust the output voltage to establish different DC input conditions and evaluate how compatible DC-DC converters respond under different supply levels.

Power Conversion Circuit Testing

The adjustable voltage and current controls allow engineers to provide controlled DC power for compatible power conversion circuits during development and testing.

Electronic Power Module Testing

The SPS-C1203S can provide adjustable DC input conditions for testing compatible power modules and related electronic components within the rated output range.

Laboratory and Engineering Development

With its wide voltage adjustment range, Precision Encoder control, HD 4-Digit Display, and multiple protection functions, the SPS-C1203S is suitable for laboratory and engineering DC-DC Converter Testing applications.

Quality Check and Terms of Service:

Package Includes

Each KUAIQU SPS-C1203S Precision DC Test Supply package includes:

DC Power Supply ×1
Output Cable ×1
Input Cable ×1
User Manual ×1
Warranty Card ×1

CE & FCC Certification

The SPS-C1203S is designed to meet applicable CE and FCC requirements for its intended use.

Inspection Before Shipment

Each power supply undergoes inspection before shipment to help ensure proper operation and product quality.

Customer Support within 24 Hours

For questions about product operation, specifications, or usage, KUAIQU customer support provides assistance within 24 hours.

Technical Specifications

Item Sub-item Specification
Rated Value (0℃~40℃) Voltage 0–120V
Current 0–3A
Power 360W
USB/Type-C Output - PDO: 5V/3A, 9V/2A, 12V/1.5A; PPS: 3.3V–5.9V/3A, 3.3V–11V/1.6A
Load Regulation Voltage ≤0.3% + 10mV
Current ≤0.1% + 2.5mA
Line Regulation Voltage ≤0.01% + 2.5mV
Current ≤0.1% + 2.5mA
Setting Resolution Voltage <100V: 10mV; ≥100V: 0.1V
Current 1mA
Readback Resolution Voltage <100V: 10mV; ≥100V: 0.1V
Current 1mA
Setting Accuracy Voltage ≤0.01% + 15mV
Current ≤0.01% + 10mA
Readback Accuracy Voltage ≤0.01% + 15mV
Current ≤0.01% + 10mA
Ripple (20Hz~20MHz) Voltage ≤300mVp-p / ≤30mVrms
Current ≤30mArms
Rise Time (No Load) Time ≤200ms
Rise Time (Full Load) Time ≤300ms
Fall Time (No Load) Time ≤30s
Fall Time (Full Load) Time ≤300ms
Dynamic Response Time ≤200ms
Efficiency - ≥85%
Input Voltage - AC 220V (AC110V optional)

Why Choose KUAIQU SPS-C1203S?

The KUAIQU SPS-C1203S combines a 0–120V adjustable output range, up to 3A current, and 360W maximum power to provide flexible DC power conditions for DC-DC Converter Testing and power conversion circuit evaluation.

Its Precision Encoder controls, including V-COARSE, V-FINE, A-COARSE, and A-FINE adjustment, allow users to configure voltage and current parameters accurately. The HD 4-Digit Display provides real-time monitoring of output voltage, current, and power, helping users observe electrical changes throughout the testing process.

With Independent Output Control, OVP, OCP, Over-Load Protection, Short Circuit Protection, Over-Temperature Protection, Grounding Protection, Cooling Fan, and USB/Type-C output functions, the SPS-C1203S provides a practical Precision DC Test Supply solution for compatible DC-DC converters, power conversion circuits, and laboratory engineering applications.

Warranty

Warranty

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.

Price Guarantee

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.

What is the 30-Day Price Guarantee?

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.)

How Does the Price Guarantee Apply?

  • Eligibility: The price guarantee applies only to purchases made on kuaiquinstrument.com. Products purchased from other retailers or third-party sellers are not eligible.
  • Timeframe: The price drop must occur within 30 days of your original purchase date.
  • Product Match: The price guarantee applies to the same product (identical model, specifications, and condition).

How to Apply for a Price Difference Refund

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:

  • Documentation: Prepare your order number and proof of the price drop (such as a screenshot and link to the product page showing the reduced price).
  • Contact Us: Reach out to our customer support team at kuaiquinstrument@163.com. Include your order number, proof of the price drop, and a brief explanation of your request.
  • Verification: Our team will verify the price drop and your purchase details.
  • Refund Process: Once verified, we will process the refund for the price difference to your original method of payment. It typically takes 1-3 business days for you to receive the refund.

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.

FAQs

Still confused about our DC regulated power supplies after checking the FAQs? Please contact our customer service, we are ready to solve all your problems.

Use overlay text to give your customers insight into your brand. Select image and text that relates to your style and story.

Our customer service can walk you through all settings. You can also watch full operation tutorials on our YouTube channel, including OVP, OCP, memory storage function and other operation guides. Our official blog also has lots of technical articles for reference.

Partial KUAIQU power supplies support program control with USB, RS232, RS485 interfaces, based on Modbus protocol. Remote control can be realized via our self-developed PC software. If you need this function and confirm interface configuration of a model, email us: kuaiquinstrument@163.com..

The banana plug adopts cross-slot design. Pry the metal slot slightly open with a screwdriver to make the plug clamp terminals tighter and safer..

All KUAIQU DC power supplies support basic battery charging. For dedicated long-term charging, our patented battery-charging model with independent BATTERY key and full charging protection is highly recommended.

A certain amount of ripple is normal for all switching DC power supplies. Ripple is a small residual AC component superimposed on the DC output and is an inherent characteristic of switching power supply technology. The typical ripple voltage of our power supplies ranges from approximately 100 mV to 300 mV, which is suitable for most general-purpose testing, maintenance, and electronic applications.

A: Minor fluctuations in the last displayed digit are normal and are typically caused by temperature drift within the electronic components. As ambient and internal temperatures change, small variations in the readings may occur. This falls within normal industry tolerances and does not affect the power supply's suitability for everyday electronics work, home repairs, DIY projects, or general testing. For applications requiring extremely high precision and ultra-stable output, a linear DC regulated power supply may be more appropriate.

This is normal and does not indicate a malfunction. The internal capacitors continue to hold a small amount of stored energy after the power is switched off. As the capacitors discharge, the display will gradually turn off, typically within 5–8 seconds.

In CV mode, the power supply maintains a fixed output voltage while the current varies according to the load. In CC mode, the power supply limits the output current to a preset value, automatically reducing voltage if necessary. CC mode is especially useful for battery charging, LED testing, and protecting electronic components.

This is normal behavior. The power supply contains internal filter capacitors that store electrical energy. When the output voltage is reduced, these capacitors require a few seconds to discharge, causing the displayed voltage to decrease more gradually than when increasing the voltage. Q: Why does t

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FAQs

If you have any other questions or technical doubts about our DC power supplies, please feel free to contact us anytime. Our professional support team will reply to you as soon as possible.

Output ripple refers to small residual AC fluctuations present in the DC output. Lower ripple levels provide cleaner power, which is important when testing sensitive electronics, RF circuits, audio equipment, and precision instruments.

Yes, all DC regulated power supplies manufactured by KUAIQU support battery charging. However, if you mainly intend to charge batteries, I would highly recommend our patented DC power supply specially designed for battery charging. It comes with an exclusive dedicated BATTERY function key, and built-in specialized charging protection functions to safeguard your batteries during the whole charging process..

This is normal behavior. The power supply contains internal filter capacitors that store electrical energy. When the output voltage is reduced, these capacitors require a few seconds to discharge, causing the displayed voltage to decrease more gradually than when increasing the voltage..

This is normal and does not indicate a malfunction. The internal capacitors continue to hold a small amount of stored energy after the power is switched off. As the capacitors discharge, the display will gradually turn off, typically within 5–8 seconds..

This is a common operation issue for adjustable DC power supplies. Please follow the steps below to solve the voltage adjustment failure: Turn the current adjustment knob clockwise moderately to set the unit to constant voltage (C.V) mode; After confirming the power supply enters CV mode, turn the voltage adjustment knob clockwise, then you can freely adjust the output voltage value..

It is recommended to pre-adjust the voltage to around 5V before operation. This step prevents spark generation when connecting short-circuited loads, which effectively avoids safety accidents and other hidden electrical hazards..

A: Our banana plug adopts cross-slot design. If the plug becomes loose, use a screwdriver to slightly pry open the metal slot, which can make the plug clamp tighter and connect more safely..

Some models of our KUAIQU DC regulated power supplies support programmable control. They are equipped with USB, RS232 or RS485 communication interfaces and adopt the Modbus protocol. You can realize remote control easily by using our self-developed PC software. If you need programmable control but are unsure whether a specific model comes with your required communication interface, please feel free to contact us via email: kuaiquinstrument@163.com.

If you have any confusion about using OVP, OCP and other built-in functions, our professional customer support staff will provide targeted guidance for you. We also upload complete step-by-step tutorial videos on our official YouTube channel. Apart from OVP and OCP over-protection setup, the videos demonstrate memory storage function and all common operation skills. You can visit our channel via https://www.youtube.com/ In addition, our official blog contains a large number of popular science and technical articles about DC power supplies, you can search and browse related content to solve your problems.

In CV mode, the power supply maintains a fixed output voltage while the current varies according to the load. In CC mode, the power supply limits the output current to a preset value, automatically reducing voltage if necessary. CC mode is especially useful for battery charging, LED testing, and protecting electronic components.

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