The Instek PSP-405 is a 200 W single-output programmable switching DC power supply engineered for benchtop research, development, and industrial testing. It delivers 0–40 V DC at 0–5 A with exceptional load and line regulation of 0.05% typical, voltage ripple ≤20 mVrms, and programming accuracy of 0.05% rdg + 20 mV for voltage and 0.1% rdg + 5 digits for current. The large LCD display shows real-time output and parameter readings, while three-step fan speed control and key lock prevent accidental configuration drift. Comprehensive protection includes OVP, OCP, OPP, and OTP safeguards for both supply and load circuits.
## Technical Specifications
• **Output:** Single output, 0–40 V DC, 0–5 A, 200 W maximum
• **Voltage Regulation:** Load 0.05%, Line 0.05% (typical)
• **Current Regulation:** Load 0.05%, Line 0.1% (typical)
• **Ripple and Noise:** ≤20 mVrms
• **Programming Accuracy:** Voltage 0.05% rdg + 20 mV; Current 0.1% rdg + 5 digits
• **Resolution:** Voltage 20 mV; Current 2 mA
• **Meter Accuracy (Readback):** Voltage and current as programming accuracy
• **Input Power:** 100–240 V AC, 50/60 Hz
• **Physical:** 225 mm W × 100 mm H × 305 mm D; 4 kg
## Key Features
• Large LCD panel for simultaneous voltage, current, and power display
• Programmable voltage, current, and power control
• Four-layer protection: OVP, OCP, OPP, OTP
• Three-step adjustable fan speed
• Output ON/OFF control with normal, +%, and −% operation keys
• Key lock function to prevent unintended setting changes
• RS-232C interface for remote control
## Typical Applications
• Laboratory benchtop testing and characterization
• Component development and validation
• Educational institution experiments
• Industrial test environments requiring stable, regulated DC power
## Compatibility & Integration
• Standard RS-232C serial interface included
• Optional European jack-type terminal connector available
• 19″ 3U rack mount kit (GRA-428) optional
• Supplied with power cord, instruction manual, and test leads (GTL-104 and GTL-204)
