Astron VLS35M 35 Amp Power Supply

The Astron VLS-35M is a robust, linear-regulated DC power supply designed for communications and industrial applications, known for its reliability and stable power output. It is made in the USA and features separate backlit analog meters for voltage and amperage.
Key Specifications
Attribute Detail
Input Voltage 105-125 VAC
Output Voltage 28 VDC (adjustable from 5.0-32.0 VDC via a front-panel control)
Continuous Output Current 27 A at 28 VDC
Peak (ICS) Output Current 35 A
Regulation Type Solid-state electronically regulated, linear topology
Ripple Voltage Less than 5 mV peak to peak (full load and low line)
Protection Fold-back current limiting and crowbar over-voltage protection
Cooling Heavy-duty heat sink
Dimensions (HxWxD) 6 x 13.75 x 12.13 inches (approx. 15.24 x 34.92 x 30.81 cm)
Weight Approx. 49 lbs (22.2 kg)
Features and User Insights
Variable Control: The VLS-35M provides flexible output, with both voltage and current limits adjustable from the front panel, making it suitable as a superb test equipment bench supply.
Durability and Reliability: Manufactured with robust components, users and experts praise the power supply for its durability, long life, and consistent performance over many years.
Quiet Operation: As a linear power supply, it is known for being extremely quiet in operation, a notable advantage over some switching power supplies.
Protection Circuitry: It includes fold-back current limiting to protect the power supply from excessive current and continuous shorted outputs, as well as crowbar over-voltage protection.
Maintenance Note: Reviewers mention that the internal variable voltage potentiometer might require occasional cleaning with a contact cleaner to prevent unstable voltage fluctuations over time.