The Astron PPS4A is a 13.8 VDC linear power supply delivering 3.5 A continuous output. This solid-state, electronically regulated unit maintains stable voltage and low ripple across input variations, making it suitable for RF test equipment, communications systems, and lab instrumentation requiring clean DC power. Built with heavy-duty construction and USA manufacturing, the PPS4A incorporates fold-back current limiting and crowbar over-voltage protection to shield both the supply and connected equipment from fault conditions.
## Technical Specifications
**Electrical:**
• Output voltage: 13.8 VDC (nominal)
• Output current: 3.5 A continuous
• Input voltage: 105–125 VAC
• Ripple: <5 mV peak-to-peak (full load, low line input)
• Load regulation: 0.08% (0 to full load)
• Efficiency: ~77%
• Operating temperature: −10°C to 55°C
**Physical:**
• Cooling: Heat sink
• Construction: Heavy-duty materials, USA-manufactured
• Power cord: Three-conductor
## Key Features
• Fold-back current limiting protects against excessive current and output shorts
• Crowbar over-voltage protection safeguards connected equipment
• Low ripple performance even at minimum input voltage
• Tight load regulation for stable operation across variable loads
## Typical Applications
RF and microwave test systems, communications equipment, laboratory power distribution, and field deployments requiring reliable, regulated 13.8 VDC sources with built-in protection.
## Compatibility & Integration
Designed for standard U.S. mains voltage (105–125 VAC). International 220 V operation available by special order.
