Textronix PS503A Dual Power Supply

🔌 Product Overview

The Tektronix PS503A is a dual-tracking, triple-output DC plug-in power supply module, designed specifically for TM500/TM5000 mainframe systems.

• Dual variable outputs: 0 to +20 V and 0 to –20 V at 1 A each (when installed in high-power compartment), or 400 mA each in standard compartments

• Fixed output: +5 V at 1 A for digital logic

• Total power rating: ~45 W .

🔧 Key Features

• Independent voltage and current controls for positive and negative supplies, with tracking mode for symmetrical output .

• Continuously variable current limit from ~50 mA up to rated current, providing current‑limited and constant‑voltage modes .

• Floating supplies for flexible grounding configurations; enhances experiment setup versatility .

• Built‑in over‑voltage protection and optional remote programming through resistance control

The PS503A is ideal for engineers needing precise, adjustable bipolar voltage rails alongside a stable digital supply in modular test systems. Built-in protections, tracking, and flexibility make it a staple in legacy Tektronix setups.