Astron Power Supplies RS-20A-BB
Best reliable power solution for radio enthusiasts needing battery backup.
The Astron RS-20A-BB is a reliable linear DC power supply designed for consistent performance. It offers a continuous output of 16A at 13.8 Vdc and a peak output of 20A at 13.8 Vdc. This model includes battery backup and a trickle charger, ensuring uninterrupted power. It features solid-state electronic regulation, fold-back current limiting for protection against excessive current and shorted outputs, and crowbar over-voltage protection. The power supply is built with heavy-duty, high-quality materials and a heat sink for cooling. It operates on a 105 to 125 VAC input voltage and provides tight regulation with low ripple.
$268.95
Owner Satisfaction
4.6
/ 5
Category Rank
136
/ 776
#136 in Power Control Units
Price vs Category Average
-71%
Below average
Power Supply Type
Linear, Regulated
/ Linear, Regulated
Who it's for
- Radio operators needing constant uptime during power outages
- Hobbyists requiring noise-free power for sensitive communication gear
- Professionals seeking durable equipment built for long-term reliability
Who should skip it
- Users who frequently transport their equipment to different locations
- Owners with limited desk space for proper heat ventilation
- Technicians who prefer real-time visual monitoring of power output
Performance breakdown
Output Stability
Linear regulation provides exceptionally clean power with minimal ripple interference.
Reliability
Heavy-duty construction ensures long-term operation in demanding professional environments.
Safety Integration
Fold-back current and crowbar protection offer robust safeguards for sensitive gear.
Backup Capability
Integrated trickle charger ensures seamless power continuity during unexpected outages.
Thermal Management
Passive heat sink design maintains cool operation without noisy internal fans.
Build Durability
Rugged chassis design reflects a classic, industrial-grade build quality.
Key Specs
Power Supply Type
Linear, Regulated
Continuous Output
16A at 13.8 Vdc
Peak Output
20A at 13.8 Vdc
Input Voltage
105 to 125 VAC
Dimensions
9.000 in. W x 5.000 in. H x 10.500 in. D
Weight
18.00 lbs
Ripple
Less than 5mv peak to peak (full load and low line)
Features
- Reliable linear DC power supply for consistent performance
- Includes battery backup and trickle charger for uninterrupted power
- Solid-state electronic regulation ensures stable output
- Fold-back current limiting protects against excessive current and shorted outputs
- Crowbar over-voltage protection safeguards connected equipment
- Heavy-duty, high-quality construction for durability
- Efficient heat sink cooling system
What customers say
Customers consistently praise the Astron RS-20A-BB for its exceptional reliability and robust build quality. Many users appreciate the seamless battery backup feature which ensures uninterrupted power during outages. The design is straightforward and functional, prioritizing long term performance over flashy aesthetics. It is widely regarded as a dependable workhorse for radio equipment. Owners value the peace of mind that comes with such a sturdy and well engineered unit. This power supply remains a top choice for those seeking a stable and quiet power source that lasts for years.
Know before you buy
Linear power supplies are known for their clean, stable output with very low ripple. This makes them ideal for sensitive communications equipment where electrical noise could interfere with signal clarity.
The unit includes a built-in trickle charger that keeps a connected external battery ready. If your primary AC power fails, the supply automatically switches to the battery to maintain uninterrupted power to your equipment.
The RS-20A-BB includes fold-back current limiting to protect against short circuits and excessive current draw. It also features crowbar over-voltage protection, which acts as a fail-safe to prevent dangerous voltage spikes from reaching your connected devices.
No, this model uses a heavy-duty heat sink for passive cooling. This design is highly reliable and eliminates the noise and potential failure points associated with mechanical cooling fans.
The unit is rated for a continuous output of 16A, with a peak capacity of 20A. It is best suited for devices that do not exceed the 16A continuous rating to ensure long-term stability and prevent the protection circuits from triggering.
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$269