3-Digit DC Test Power Supply NICE-POWER SPS-E305 30V 5A 150W for Electronic Component Testing
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3-Digit DC Test Power Supply NICE-POWER SPS-E305 30V 5A 150W for Electronic Component Testing

$49.99
$49.99
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Model: SPS-E305
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3-Digit DC Test Power Supply NICE-POWER SPS-E305 30V 5A 150W for Electronic Component Testing

3-Digit DC Test Power Supply NICE-POWER SPS-E305 30V 5A 150W for Electronic Component Testing

$49.99

3-Digit DC Test Power Supply NICE-POWER SPS-E305 30V 5A 150W for Electronic Component Testing

$49.99
Model: SPS-E305

Download English Manual (PDF)

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

3-Digit DC Test Power Supply NICE-

POWER SPS-E305 30V 5A 150W for

Electronic Component Testing

NICE-POWER SPS-E305 is a compact 3-Digit DC Test Power Supply developed for bench-level Electronic Component Testing, component evaluation, and small electronic circuit verification. With a 0-30V adjustable DC output, up to 5A adjustable current, and 150W rated power, it allows users to establish different electrical conditions for components and small test circuits. The Encoder Adjustment provides controlled voltage and current adjustment, while the 3-digit display provides a direct numerical reference during testing.

For electronics engineers, technicians, educators, and development users, the SPS-E305 can serve as a practical adjustable DC source when individual components or small circuit sections need to be evaluated separately from a complete system. Its compact mini design also makes it suitable for workbenches where multiple instruments or component test setups are used together.

Key Features

Adjustable 0-30V DC Test Output

The SPS-E305 provides an adjustable output from 0 to 30V, giving users flexibility when establishing DC test conditions for electronic components. Different voltage levels can be selected according to the requirements of the component or circuit being evaluated, making the power supply suitable for a variety of low-voltage Electronic Component Testing tasks.

0-5A Adjustable Current Capability

The output current can be adjusted from 0 to 5A. This allows users to establish different current conditions when evaluating electronic components and small circuits. The adjustable current setting can be useful when comparing component behavior under different operating conditions within the rated limits of the device under test.

150W Rated DC Test Power

With a rated output power of 150W, the SPS-E305 provides practical capacity for individual component testing as well as small electronic assemblies. The available output range allows users to select appropriate voltage and current combinations for test procedures while keeping the connected device within its specified operating conditions.

3-Digit Display for Test Parameter Monitoring

The integrated 3-digit display provides a convenient numerical reference while setting and checking the power supply output. During Electronic Component Testing, users can observe the selected voltage and current settings without relying only on the position of the adjustment control.

Encoder Adjustment for Repeated Testing

The Encoder Adjustment design is particularly useful for test work that requires frequent changes to voltage or current. Instead of relying on a fixed output value, users can adjust the test conditions as they move between different components, samples, or stages of an evaluation procedure.

10mV Voltage Setting Resolution

The voltage setting resolution is 10mV, allowing users to make relatively fine changes to the DC output when testing electronic components. This can be useful when a test requires comparison between nearby voltage levels or when gradually changing the supply condition during component evaluation.

1mA Current Setting Resolution

The 1mA current setting resolution provides fine control of the current setting. For Electronic Component Testing, this allows users to make smaller changes when establishing different current conditions for a device or circuit under evaluation.

Constant Voltage and Constant Current Operation

The SPS-E305 supports constant voltage and constant current operation for controlled DC power delivery. This gives users a practical operating mode for test procedures where the required test condition is based primarily on a controlled voltage or current level.

Low-Ripple Output for Component Evaluation

The SPS-E305 specifies voltage ripple of ≤60 mVp-p / ≤10 mVrms and current ripple of ≤10 mArms. The specified ripple performance provides a controlled DC source for bench-level component and circuit evaluation, particularly when users need a consistent supply condition while comparing test samples.

Compact Mini Form Factor

The compact SPS-E305 is designed for space-conscious electronics workbenches. Its approximately 18.5 × 10 × 7.8 cm size allows it to be placed near component fixtures, test boards, meters, oscilloscopes, and other laboratory equipment without requiring a large dedicated bench area.

Applications

Individual Electronic Component Evaluation

The SPS-E305 can provide adjustable DC power when evaluating individual electronic components under selected voltage and current conditions. Users can establish a test point, observe component behavior, and then change the supply setting for additional measurements.

Component Parameter Comparison

When multiple components of the same type need to be compared, the adjustable DC output allows users to establish consistent test conditions across different samples. This can support basic comparative evaluation during development, incoming inspection, or troubleshooting.

Diode and LED Component Testing

Suitable diode and LED components can be evaluated using controlled DC voltage and current conditions within their specified operating range. The adjustable output allows users to establish different test conditions when observing component response.

Transistor Testing

For appropriate low-voltage transistor testing setups, the SPS-E305 can provide an adjustable DC source for the surrounding test circuit. Voltage and current settings can be changed as the user evaluates the component under different operating conditions.

Passive Component Circuit Testing

The SPS-E305 can supply DC power to suitable test circuits containing resistors, capacitors, and other passive components. This makes it useful when the objective is to evaluate component behavior as part of a small circuit rather than as an isolated device.

Component Selection and Screening

The adjustable output can be used during basic component screening procedures where different samples need to be evaluated under defined DC conditions. Users can maintain a similar test setup while changing components for comparison.

Prototype Component Verification

During the development of electronic prototypes, individual components or circuit sections often need to be checked before the complete system is assembled. The SPS-E305 provides an adjustable DC source for these early-stage verification tasks.

Electronic Repair and Troubleshooting

For electronics repair work, the SPS-E305 can provide an adjustable DC source for checking individual components and small circuit sections. Its compact size makes it practical for service benches where space and accessibility are important.

Repeated Component Testing

Electronic development and production-related evaluation may require the same test procedure to be repeated across multiple components. The Encoder Adjustment and adjustable voltage and current settings make it possible to establish and modify test conditions efficiently during repeated bench procedures.

Component Behavior Under Different Supply Conditions

The 0-30V adjustable output allows users to change the applied supply voltage when evaluating how a suitable component or circuit responds to different DC conditions. This can help with basic characterization and operating-condition comparison within the component's specifications.

Small Circuit Section Verification

The SPS-E305 can power a small section of an electronic circuit while users independently examine a component or group of components. This approach can be useful when troubleshooting a specific portion of a prototype rather than powering the entire system.

Electronics Education and Laboratory Training

The combination of a 3-digit display, Encoder Adjustment, adjustable voltage and current, and compact form factor makes the SPS-E305 suitable for educational exercises involving basic electronic components, DC circuits, and component response measurements.

Quality Check and Terms of Service

  • Package includes: 1 × DC Power Supply

  • 1 × Power Cord

  • 1 × Output Test Lead

  • 1 × User Manual

  • Has passed CE & FCC Certification.

  • 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 Specification
Model SPS-E305
Product Type 3-Digit DC Test Power Supply
Output Voltage 0-30V
Output Current 0-5A
Rated Power 150W
Adjustment Method Encoder Adjustment
Display 3-Digit Display
Input Voltage AC100-240V
Voltage Setting Resolution 10mV
Current Setting Resolution 1mA
Voltage Readback Resolution 10mV
Current Readback Resolution 1mA
Voltage Setting Accuracy ≤0.05% + 10mV
Current Setting Accuracy ≤0.01% + 10mA
Voltage Readback Accuracy ≤0.05% + 10mV
Current Readback Accuracy ≤0.01% + 10mA
Voltage Load Regulation ≤0.3% + 10mV
Current Load Regulation ≤0.1% + 2.5mA
Voltage Line Regulation ≤0.01% + 2.5mV
Current Line Regulation ≤0.1% + 2.5mA
Voltage Ripple ≤60 mVp-p / ≤10 mVrms
Current Ripple ≤10 mArms
Rise Time, No Load ≤200ms
Rise Time, Full Load ≤300ms
Fall Time, Full Load ≤300ms
Fall Time, No Load ≤15S
Dynamic Response ≤200ms
Efficiency ≥85%
Rated Operating Temperature 0-40°C
Size About 18.5 × 10 × 7.8 cm
Net Weight About 0.7KG
Package Size 23 × 19 × 11 cm
Package Weight 1.1KG

Why Choose NICE-POWER SPS-E305?

NICE-POWER SPS-E305 is designed around the practical requirements of Electronic Component Testing, where different components may require different DC test conditions. Its 0-30V adjustable voltage range and 0-5A adjustable current capability allow users to change test parameters rather than working with a fixed DC source.

The 3-Digit DC Test Power Supply format provides a direct numerical reference during bench work, while the Encoder Adjustment makes repeated voltage and current changes more convenient. The 10mV voltage setting resolution and 1mA current setting resolution further support controlled adjustment when comparing components or checking a circuit at different operating points.

With its 150W rated power and compact mini form factor, the SPS-E305 can fit into component evaluation benches, electronics repair stations, educational laboratories, and prototype development environments. It is a practical choice for users who need an Adjustable DC Power Supply for component evaluation without requiring a larger bench power system.

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.

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.
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  • 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.