
( Brand: Elenco Precision ), ( Manufacturer Part Number: XP-720 ), ( Compatible Brand: Heathkit ), ( Type: Dc And Ac Power Supply ), ( Year Manufactured: 2026 ), ( Features: On/off Switch )
The **Elenco Precision XP-720 Power Supply** is a robust and versatile solid-state bench-top power supply designed for precision testing, prototyping, and electronics repair. Engineered with reliability and user-friendliness in mind, this dual-output unit delivers a stable and adjustable voltage and current supply, making it an indispensable tool for hobbyists, engineers, and technicians alike. With a maximum output of **720 watts**, the XP-720 provides two independent channels, each capable of delivering up to **30V at 24A** or **15V at 48A**, ensuring flexibility for a wide range of applications, from powering small circuits to driving high-current loads. The front panel features a **large, easy-to-read LCD display** that clearly shows real-time voltage, current, and power readings for both channels, allowing for precise monitoring and adjustments with minimal effort. The intuitive control interface includes **separate potentiometers for fine-tuning voltage and current** on each channel, along with **overload protection** to safeguard both the power supply and connected components from damage due to excessive current draw. Constructed with high-quality components, the XP-720 is built to withstand rigorous use, featuring a sturdy metal chassis that dissipates heat efficiently while maintaining a compact and space-saving footprint. Its **solid-state design** eliminates the need for bulky transformers, resulting in a lightweight yet durable unit that operates quietly and reliably. Whether you're testing sensitive semiconductor devices, powering motor drivers, or experimenting with custom circuits, the Elenco Precision XP-720 offers the stability, precision, and versatility required to tackle demanding projects with confidence. Its combination of **adjustable output ranges, robust protection features, and user-friendly controls** makes it a standout choice for both educational and professional environments.
**Pros and Cons of buying a Elenco Precision XP-720 Power Supply (Solid Bench Outputs, AC)**
### **Pros**
1. **Dual Outputs with Independent Control**
The XP-720 provides two separate AC outputs (115V and 230V) with independent voltage and frequency adjustments. This makes it highly versatile for testing and repairing devices that require different voltage/frequency settings, such as appliances, electronics, or motors.
2. **Wide Voltage and Frequency Range**
Each output can be adjusted from **0 132V (115V output)** and **0 264V (230V output)** with a frequency range of **45 400Hz**. This broad range allows for extensive testing of equipment designed for various global power standards, including legacy or non-standard devices.
3. **Solid-State Construction with Bench Design**
The solid-state design ensures reliability and durability, reducing the risk of failure compared to electromechanical or transformer-based units. The bench-style construction provides stability and easy access to controls, making it suitable for lab or workshop use.
4. **Overload and Short-Circuit Protection**
The power supply includes built-in protection features to prevent damage from overloads or short circuits, which is crucial for safety when testing unknown or faulty devices.
5. **Adjustable Outputs with Precise Control**
The variable voltage and frequency outputs allow for fine-tuning, which is useful for troubleshooting, performance testing, or simulating different power conditions (e.g., voltage sag, frequency drift).
6. **Compact and Portable (Relative to Similar Units)**
While not ultra-portable, it is more manageable than larger industrial-grade power supplies, making it easier to store and transport between locations.
7. **Useful for Electronics Repair and Testing**
Ideal for technicians, hobbyists, and engineers who need to test appliances, motors, transformers, or other AC-powered devices without risking damage to the original power source.
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### **Cons**
1. **Limited Maximum Power Output**
The XP-720 has a **maximum output of 720VA (720W at 100% power factor)**, which may be insufficient for high-power devices like industrial motors, large compressors, or high-wattage appliances. Users with heavy-duty equipment may need a higher-capacity unit.
2. **No True RMS Measurement**
The voltage and current readings are likely based on average (not true RMS) measurements, which can lead to inaccuracies when testing non-linear loads (e.g., variable-speed drives, electronic ballasts). For precise measurements, an external multimeter may be required.
3. **No Built-In Metering for Both Outputs Simultaneously**
While each output has its own meter, there is no single display showing total power consumption or combined load across both outputs. This can make monitoring total usage less convenient.
4. **Potential for Heat Dissipation in Prolonged Use**
Like most variable AC power supplies, continuous operation at high loads may generate heat. While the XP-720 is designed for bench use, extended use without adequate ventilation could lead to overheating.
5. **No USB or Digital Interface for Remote Control**
Unlike modern digital power supplies, the XP-720 lacks USB or communication ports for programming, logging, or remote control. Users must manually adjust settings, which can be less efficient for automated testing.
6. **Age and Availability Concerns**
Elenco s older models (including the XP-720) may be harder to find in stock compared to newer brands. Additionally, parts or replacements could be difficult to source if the unit fails after many years of use.
7. **No Built-In Surge or EMI Filtering**
The unit does not explicitly mention surge protection or electromagnetic interference (EMI) filtering, which could be a concern when testing sensitive electronics that are prone to voltage spikes.
8. **Physical Size and Weight**
While not excessively large, the XP-720 is a bench-top unit and requires a dedicated space. Its weight (approximately 10 12 lbs) makes it less portable than smaller, lower-power supplies.
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### **Conclusion**
The **Elenco Precision XP-720** is a solid, mid-range variable AC power supply well-suited for electronics repair, appliance testing, and general bench work where dual independent outputs are needed. Its adjustable voltage and frequency ranges make it versatile for global power standards and troubleshooting, while its protection features enhance safety.
However, its **limited power capacity (720VA)**, lack of true RMS metering, and absence of modern digital controls may be drawbacks for users requiring high precision, automation, or heavy-duty applications. If your primary needs align with testing low-to-medium power devices (e.g., small motors, appliances, transformers), the XP-720 is a reliable and cost-effective choice. For more demanding or high-precision work, a newer digital power supply with higher wattage and advanced metering may be preferable.
### **Recommendation**
- **Buy the XP-720 if:**- You need a **dual-output variable AC supply** for general electronics repair or appliance testing.
- Your workload involves **low-to-medium power devices** (under 720W) requiring adjustable voltage/frequency.
- You prioritize **affordability and simplicity** over advanced digital features.
- You already have a stable bench setup and adequate ventilation.
- **Consider alternatives if:**- You require **higher power output** (e.g., 1000VA or more) for industrial or high-wattage loads.
- You need **true RMS metering, digital controls, or remote programming**.
- You work with **sensitive electronics** that require EMI filtering or surge protection.
- You prefer **newer brands** with better availability of parts and support (e.g., Extech, Fluke, or digital variable AC supplies like the **Rigol DP832** for DC or **Tektronix** for AC).
For most hobbyists and technicians, the XP-720 remains a **practical and budget-friendly option**, but weigh its limitations against your specific needs before purchasing.
DC / AC Bench Solid State Power Supply, Documentation included. Outputs DC - 5 VDC 3 Digital. Outputs DC - Adjustable 1 VDC to 15 1 Amp.