New Product: Ac/dc power supply

Dec. 13, 2007
The Astec NTS503 500-W ac-dc power supply offers power density of 11.9 W/in.3 A convection-cooled model outputs 200 W, while the fan-cooled version delivers 500 W up to 50°C with 30-cfm forced air.

The supplies generate a 12-V output to power boards fitted with multiple nonisolated point-of-load dc-dc converters. The convectioncooled model delivers 16.6 A, and the forced-air version delivers 41.7 A. An auxiliary “always-on” regulated 5 Vdc @ 2-A output for standby operation and a 12-V output for powering fans are included. A universal input accepts 85 to 265-Vac at any frequency from 47 to 440 Hz. The active power-factor correction minimizes input harmonic current distortion.

Built-in control and monitoring features include “ac power fail” and “dc OK” output signals; a remote on/off input; overvoltage, shortcircuit, and overtemperature conditions protection. The power supply has an internal O-ring diode on its main 12-V output for fault-tolerant and N+1 redundancy applications. The main 12-V output is adjustable to 5% either side of nominal with an internal trim potentiometer or through the digital interface. Regulation is maintained to within ±2% for all line and load conditions. Differential remote sense facilities compensate for a 0.5-V drop between the output terminals and the load. The auxiliary 5-Vdc output is regulated to within ±5% and delivers 2.0 A.

Emerson Network Power, 1050 Dearborn Dr., Columbus, OH 43085, (614) 888-0246, emersonnetworkpower.com

Sponsored Recommendations

June 27, 2025
Ensure workplace safety and compliance with our comprehensive Lockout/Tagout (LOTO) Safety Training course. Learn critical procedures to prevent serious injuries.
June 27, 2025
Join our expert webinar to discover essential safety control measures and best practices for engineering a truly safe and compliant industrial environment.
June 25, 2025
An innovative aircraft with electric drives combines the best of both worlds. The cross between drone and helicopter could mean significantly faster and more efficient air emergency...
June 25, 2025
Effective when other materials fail, ceramics are particularly suitable for applications requiring wear and chemical resistance, sliding characteristics or biocompatibility. Discover...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!