KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing
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KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing
KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing
KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing
KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing
KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing
KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing
KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing

KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing

$189.00
$189.00
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Input Voltage: AC220V(±10%)
Model: SPPS-K305
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KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing

KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing

$189.00
KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing
KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing
KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing
KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing
KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing
KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing

KUAIQU SPPS-K305 30V 5A Bench Power Supply with Curve Display for Power Electronics Testing

$189.00
Input Voltage: AC220V(±10%)
Model: SPPS-K305
Product Details

Download English Manual (PDF)

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

 

KUAIQU SPPS-K305 30V 5A Bench

 Power Supply with Curve Display for

 Power Electronics Testing

🔥 Pain Points You’re Actually Facing

⚠️ Unstable or inaccurate power conditions can make power electronics test results unreliable and difficult to reproduce

⚠️ Conventional digital displays show instantaneous values but make it difficult to observe voltage and current trends during circuit testing

⚠️ Low-current changes can be difficult to detect, making standby, leakage, startup, and light-load behavior harder to analyze

⚠️ Frequently changing voltage and current parameters between test conditions wastes valuable engineering time

⚠️ Incorrect voltage, excessive current, or accidental short circuits can damage prototypes, power modules, and test boards

⚠️ Long-duration power electronics tests require protection against accidental parameter changes

⚠️ Coarse adjustment makes it difficult to precisely set the operating point of sensitive power circuits

⚠️ Without stored test parameters, engineers have to repeatedly configure the same voltage/current conditions

✅ Corresponding Core Solutions

✅ Stable 0–30V Adjustable DC Output: Provides a controllable DC input source for power electronics development, circuit evaluation, and prototype testing.

✅ 0–5A Adjustable Current Control: Allows engineers to define controlled current limits for different power circuits, modules, and electronic loads.

✅ 1mV Voltage Resolution & High-Precision Measurement: Enables fine voltage adjustment and accurate monitoring when evaluating power circuit behavior.

✅ Dual Voltage & Current Curve Display: Visually tracks voltage and current changes in real time, helping engineers analyze startup, load response, fluctuations, and abnormal operating conditions.

✅ 10μA Low-Current Readback Resolution: Helps detect small current variations during low-load, standby, leakage, and light-load testing.

✅ 5-Digit High-Resolution Display: Provides clear numerical readings for more precise observation of voltage, current, and power conditions.

✅ 4 Groups of Stored Parameters: Saves frequently used voltage/current configurations for faster and more repeatable testing.

✅ OVP / OCP / SCP Protection: Helps protect the power supply and connected prototypes from overvoltage, overcurrent, and short-circuit conditions.

✅ Panel Lock Function: Prevents accidental changes to test parameters during long-duration or unattended testing.

✅ Encoder Precision Adjustment: Provides smooth and precise voltage/current adjustment for setting accurate test conditions.

✅ Output Enable Control: Allows engineers to configure parameters before applying power to the device under test.

✦ Stable Adjustable Power Source for Power Electronics Testing

Power electronics testing requires a stable and controllable input source to evaluate circuit performance under different operating conditions. The KUAIQU SPPS-K305 provides adjustable voltage and current control for power circuit development, module evaluation, prototype validation, and laboratory testing.

The SPPS-K305 provides:

  • 0–30V adjustable output voltage

  • 0–5A adjustable output current

  • 150W maximum output power

  • 1mV voltage setting resolution

  • 1mA current setting resolution

  • 10μA current readback resolution below 20mA

It can be used to evaluate:

✓ Power circuit operating conditions
✓ Voltage regulation behavior
✓ Current consumption
✓ Startup characteristics
✓ Load response
✓ Power stability
✓ Abnormal current conditions
✓ Prototype operating performance

The adjustable output allows engineers to establish controlled and repeatable power conditions when developing and validating power electronics.

✦ Real-Time Voltage & Current Curve Display for Power Circuit Analysis

Power electronics circuits can experience rapid changes in voltage and current during startup, loading, switching, and fault conditions. A numerical reading alone may not provide enough information to understand these changes.

The SPPS-K305 features a real-time dual voltage and current curve display, allowing engineers to visually observe power behavior during testing.

The curve display helps engineers monitor:

  • Startup current changes

  • Voltage stabilization

  • Load-related current variations

  • Voltage fluctuations

  • Current fluctuations

  • Abnormal power behavior

  • Changes between different test stages

This visual feedback can help engineers identify:

  • Unstable circuit operation

  • Abnormal current consumption

  • Unexpected load response

  • Power regulation problems

  • Prototype circuit issues

Making the SPPS-K305 useful for power electronics debugging and performance evaluation.

✦ 10μA Current Readback for Detailed Power Consumption Analysis

Power electronics testing is not limited to high-current operation. Small current changes can also provide important information about circuit behavior, standby states, leakage, and low-load operation.

The SPPS-K305 provides 10μA current readback resolution below 20mA, together with automatic current unit conversion and a high-resolution digital display.

Engineers can observe:

  • Low-load current

  • Standby current

  • Leakage-related current changes

  • Startup current

  • Light-load operating behavior

  • Small current fluctuations

  • Abnormal current consumption

This helps engineers compare circuit behavior under different operating conditions and identify small changes that may otherwise be difficult to detect.

✦ 4 Memory Presets for Repeatable Power Electronics Testing

Power electronics development often requires a DUT to be tested at several predefined voltage and current conditions.

The SPPS-K305 provides 4 groups of stored parameters, allowing commonly used test conditions to be saved and recalled quickly.

Example configurations:

M1: Low-voltage operating test
M2: Rated operating condition
M3: High-current load test
M4: Standby or low-load test

Quick parameter recall helps reduce repetitive manual adjustments and makes it easier to maintain consistent test conditions when comparing circuit performance.

✦ OVP, OCP & SCP Protection for Prototype Testing

Power electronics prototypes may contain sensitive semiconductor devices, switching circuits, power modules, and evaluation boards. Incorrect test parameters or wiring faults can cause excessive electrical stress.

The SPPS-K305 provides multiple protection functions:

OVP — Over Voltage Protection

Helps prevent excessive output voltage from being applied to connected power electronics and sensitive prototype circuits.

OCP — Over Current Protection

Helps limit abnormal current conditions caused by overloads, unexpected circuit behavior, or test errors.

SCP — Short Circuit Protection

Helps protect the power supply and connected equipment in the event of an accidental short circuit.

Panel Lock Function

Helps prevent unintended voltage or current adjustments during extended testing.

Together, these functions provide an additional layer of protection when testing power electronics prototypes and evaluation boards.

✦ Precision Voltage & Current Control for Power Electronics R&D

Power electronics engineers often need to compare circuit performance at slightly different input conditions. Precise parameter adjustment is therefore important during development and validation.

The SPPS-K305 provides:

  • 1mV voltage setting resolution

  • 1mA current setting resolution

  • 10μA current readback resolution below 20mA

  • 0.05% + 10mV voltage setting accuracy

  • 0.1% + 10mA current setting accuracy

  • 5-digit high-resolution display

Combined with encoder adjustment, the power supply allows engineers to make controlled changes to voltage and current while observing the resulting circuit response.

This is useful when investigating:

  • Voltage regulation

  • Current response

  • Load behavior

  • Power consumption

  • Circuit stability

  • Operating limits

✦ Professional Operation Features for Power Electronics Testing

Designed for R&D laboratories, electronics workshops, engineering development, and production testing environments, the SPPS-K305 includes:

Encoder Precision Adjustment

Provides smooth and accurate voltage and current adjustment for repeatable power electronics testing.

Output Enable Switch

Allows engineers to configure the required voltage and current before applying power to the device under test.

Adjustable Key Tone

Provides adjustable operation feedback and can be muted when quiet laboratory operation is preferred.

USB + Type-C Charging Ports

Provides convenient 5V/2A output for compatible electronic devices and accessories used during engineering work.

Intelligent Cooling System

Helps maintain stable operation during extended testing and higher-power applications.

Panel Lock

Helps prevent accidental parameter changes during long-duration testing and repeated measurements.

✦ Applications Power Electronics Testing

  • Power circuit testing

  • Power module evaluation

  • Power converter testing

  • Voltage regulation testing

  • Current consumption analysis

  • Switching circuit evaluation

  • Power circuit debugging

  • Prototype power testing

Power Device Development

  • Semiconductor power device testing

  • Power component evaluation

  • Electronic module testing

  • Power stage validation

  • Circuit operating point verification

Prototype & R&D Testing

  • Prototype board testing

  • Electronic circuit validation

  • Power system development

  • Engineering laboratory testing

  • Circuit performance analysis

Production & Quality Testing

  • Electronic device inspection

  • Power circuit functional testing

  • Product validation

  • Repeated test condition verification

  • Quality control testing

Quality Check and Terms of Service

  • Package includes: DC Power Supply ×1, Output Power Cord ×1, Input Power Cord ×1, User Manual ×1, Warranty Card ×1.

  • CE & FCC Certified: The product has passed CE and FCC certification.

  • Quality Inspection: All DC power supplies and accessories are inspected before shipment to ensure good quality.

  • Customer Support: Contact us with any questions, and we'll respond within 24 hours.

Technical Specifications

Parameter SPPS-K305 Specs
Model SPPS-K305
Rated Output (0℃~40℃) 0–30V, 0–5A, 150W
USB/Type-C Output 5V/2A
Load Regulation Voltage: ≤0.01%+10mV / Current: ≤0.1%+5mA
Line Regulation Voltage: ≤0.01%+2.5mV / Current: ≤0.1%+2.5mA
Setting Resolution Voltage: 1mV / Current: 1mA
Readback Resolution Current: <20mA: 10μA
Setting Accuracy Voltage: 0.05%+10mV / Current: 0.1%+10mA
Readback Accuracy Voltage: 0.05%+10mV / Current: <20mA: 0.1%+60μA
Ripple (20Hz~20MHz) Voltage: ≤100mVp-p / 15mVrms / Current: ≤15mArms
Rise Time (No Load) ≤200mS
Fall Time (No Load) ≤3S
Input Voltage AC 220V (AC110V optional)
Net Weight 1.17KG / 2.58lb

Why Choose KUAIQU SPPS-K305?

For power electronics testing, engineers need a stable, accurately adjustable, and clearly measurable power source that can support different test conditions.

The KUAIQU SPPS-K305 combines:

✓ 0–30V / 0–5A adjustable output
✓ 150W maximum output power
✓ Real-time dual voltage & current curve display
✓ 1mV voltage setting resolution
✓ 10μA low-current readback resolution
✓ 5-digit high-resolution display
✓ 4 programmable memory presets
✓ OVP / OCP / SCP protection
✓ Panel lock function
✓ Precision encoder adjustment
✓ Output enable control
✓ USB + Type-C 5V/2A output

Providing a practical testing solution for power electronics development, power circuit evaluation, prototype validation, power module testing, circuit debugging, and engineering R&D.

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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