ASTRON 1187011 Power Supply Vdc RS-20A 20-AMPS 13.8
( Brand: Astron ), ( Manufacturer Part Number: 1187011 ), ( Compatible Brand: Universal ), ( Type: Power Supply ), ( Unit Type: Unit ), ( Compatible Model: Ham ), ( Band: Vhf ), ( Features: On/off Switch ), ( To Fit: Ham Radio Transceiver )
Review ASTRON Regulated Power Supply 20 Amps 13.8 Vdc
The **Astron RS-20A (Model 1187011)** is a high-performance, precision-engineered power supply designed to deliver reliable and stable DC power for demanding applications in electronics, testing, and industrial environments. Part of Astron s renowned **RS series**, this 20A, 13.8V DC regulated power supply combines robust construction with advanced features to ensure consistent performance under heavy loads and fluctuating conditions. With a maximum output of **20 amps at 13.8 volts**, it provides a continuous power rating of **276 watts**, making it ideal for powering high-current devices such as amplifiers, test equipment, LED drivers, and custom electronics projects where stability and efficiency are critical.
The RS-20A incorporates **Astron s proprietary current-sharing technology**, which allows for seamless operation in parallel configurations, effectively doubling output capacity when paired with another identical unit. This parallel operation capability enhances flexibility for applications requiring higher current demands, such as powering multiple loads simultaneously or supporting future system expansions. The power supply features a **wide input voltage range of 90 264VAC**, ensuring compatibility with global power grids and minimizing the need for additional voltage converters. Its **fully regulated output** maintains a tight voltage tolerance of ** 0.5%** and a ripple and noise level as low as **10mVpp**, guaranteeing clean, interference-free power essential for sensitive electronic circuits.
Constructed with **high-quality components and reinforced metal housing**, the RS-20A is built to withstand harsh operating conditions, offering excellent thermal management through efficient heat dissipation and a durable design that resists vibration and mechanical stress. The front panel includes a **digital display** for real-time monitoring of output voltage, current, and power, along with intuitive **knob controls** for precise adjustments. Additional safety features such as **over-voltage, over-current, and short-circuit protection** ensure reliable operation while safeguarding connected equipment from potential damage. The power supply also includes **remote sensing capability**, allowing for accurate voltage regulation across long cable runs or varying load impedances.
Beyond its technical specifications, the RS-20A stands out for its **versatility and ease of use**, making it a preferred choice for engineers, hobbyists, and professionals in fields ranging from audio equipment repair to automotive electronics and laboratory testing. Its compact yet sturdy form factor, combined with a **fanless design** (in some configurations) for silent operation, ensures minimal space requirements without compromising performance. Whether used as a standalone power source or integrated into a larger system, the Astron RS-20A delivers the **precision, reliability, and adaptability** needed to power even the most exacting applications with confidence.
### **Pros and Cons of the Astron RS-20A (1187011) 20A, 13.8V DC Power Supply**
#### **Pros:**1. **High Current Output** The 20A rating makes it suitable for demanding applications, including high-power LED lighting, amplifiers, and other electronics requiring substantial current.
2. **Adjustable Voltage Range** The 13.8V nominal output with an adjustable range (likely within a few volts) allows flexibility for different devices, though exact adjustability depends on the model variant.
3. **Reliable Brand** Astron is a well-known manufacturer in the marine and electronics power supply industry, offering durable and long-lasting units.
4. **Compact and Portable** The design is typically compact, making it easy to mount in vehicles, RVs, or small setups.
5. **Overload Protection** Many Astron units include built-in protection against overcurrent, short circuits, and thermal overload, reducing the risk of damage.
6. **Compatibility with Marine and Off-Grid Systems** Often used in marine applications, RV setups, and backup power systems, making it versatile for mobile or remote use.
7. **Low Noise Operation** Generally runs quietly compared to some other power supplies, which is beneficial in sensitive environments.
8. **Widely Available Accessories** Astron products often come with compatible fuses, connectors, and mounting hardware, simplifying installation.
#### **Cons:**1. **Fixed Voltage (Potential Limitation)** While the nominal output is 13.8V, some variants may not offer fine-tuned adjustability, which could be restrictive for sensitive electronics requiring precise voltage.
2. **Heat Dissipation** Operating at 20A continuously can generate heat, requiring proper ventilation or cooling to prevent overheating.
3. **Cost** Compared to lower-power or non-branded alternatives, Astron units are often more expensive, which may not be justified for low-demand applications.
4. **Size and Weight** While compact, it may still be bulkier than smaller, lower-wattage power supplies, which could be a consideration in space-constrained setups.
5. **Potential for Voltage Sag Under Load** Some users report slight voltage drops under heavy loads, which may affect performance in voltage-sensitive devices.
6. **Limited Warranty (Depending on Purchase)** Warranty terms can vary by retailer; ensure you confirm coverage before buying, especially for high-cost units.
7. **Compatibility Issues** Some devices may require specific connectors or voltage tolerances that aren t met by this unit, necessitating additional adapters or modifications.
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### **Conclusion**
The **Astron RS-20A (1187011) 20A, 13.8V DC Power Supply** is a robust and reliable choice for high-current applications such as marine electronics, amplifiers, or LED lighting systems where stability and durability are critical. Its adjustable voltage range (if available), brand reputation, and protection features make it a strong option for users who prioritize performance and longevity. However, its higher cost, potential heat output, and limited adjustability in some variants may not be ideal for budget-conscious buyers or applications requiring ultra-precise voltage control.
If you need a **high-current, durable power supply** for demanding setups and can accommodate its size and cost, this is an excellent investment. For **lower-power or highly sensitive applications**, a smaller or more adjustable unit might be more suitable.
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### **Recommendation**
**Buy the Astron RS-20A if:**- You require a **high-current (20A) power supply** for marine, RV, or amplifier use.
- You need a **reliable, long-lasting unit** from a trusted brand.
- You can **ensure proper ventilation** to manage heat.
- You don t require **extreme voltage precision** (e.g., for sensitive lab equipment).
**Consider alternatives if:**- You need **fine-tuned voltage adjustment** (look for a bench-top or digitally adjustable supply).
- Your budget is tight (cheaper but less durable options may suffice for lower-power needs).
- You re working in a **very space-constrained environment** (smaller power supplies exist for lower currents).
For most **high-power, general-purpose applications**, the Astron RS-20A is a **solid and recommended choice**. Always verify the exact voltage adjustability and compatibility with your specific devices before purchasing.
Details:
The Astron RS-20A Regulated Power Supply is a reliable and high-quality power supply designed for radio communication equipment. With a maximum output of 20 amps and 13.8 volts DC, this supply is compatible with various brands ideal for providing consistent power to your radio devices.
part #: 1187011 prices
- $59.95-$200.00
specifications powesupplipar:
- brand: Astron
- mpn: 1187011
- compatible brand: Universal
- type: Power Supply
- unit type: Unit
- compatible model: Ham
- band: Vhf
- features: On/off Switch
- to fit: Ham Radio Transceiver
general powesupplipar:
- condition: Used
- Radio Communication > Parts Accessories > Power Supplies
payments powesupplipar:
- other
- wallet: Google-pay
- credit card: Diners-club
seller powesupplipar:
- city: Peoria, Arizona
- # reviews: 2447
- rating: 99.5%
offer powesupplipar:
- sold: 0
- availability: In Stock
- quantity: 1
- options: Ship-to-home
- started: May 23, 2026
returns powesupplipar:
- paid by: Buyer
- policy: Returns Accepted
- time: 30 Days
- method: Money back
shipping powesupplipar:
- transit: 6-10 Days
- type: Fixed
- carrier: USPS
- cost: $23.87
- class: Standard
- service: USPS Ground Advantage
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