Programmable DC Power Supply
The PSW 80-40.5 from GW‑INSTEK is a single-output, multi-range programmable switching DC power supply specified for 0–80 V and 0–40.5 A with a maximum output power of 1080 W. The product delivers adjustable voltage and current in constant voltage (CV) and constant current (CC) modes and offers CV/CC prioritization as well as adjustable slew rate, as indicated by the manufacturer's specifications.Function and Control
The PSW 80-40.5 features digital operation via the front panel and programmable access via standard LAN and USB interfaces, as well as an analog control/monitoring connection. Optional accessories include a GPIB‑USB adapter and an RS232‑USB cable. The front panel includes a 4-digit display for voltage and current, along with buttons and dials for local control.
Protection and Operating Characteristics
The PSW series power supply includes documented protection functions: over-voltage protection (OVP), over-current protection (OCP), over-temperature (OTP), and AC-fail (low AC input) shutdown. The unit supports series and parallel connection (up to 2 units in series, up to 3 units in parallel) as indicated in the manufacturer's technical specifications.
Operating Conditions and Mechanical
The unit is designed for operation at nominal mains 100–240 Vac (operating range 85–265 Vac) and 47–63 Hz. Cooling is provided by forced air via an internal fan. For the 1080 W model, the manufacturer specifies weight and dimensions: approx. 7.5 kg and 214×124×350 mm.
Technical Reference
Specifications
- Product: GW‑INSTEK PSW 80-40.5
- Type: Single-output, multi-range programmable switching DC power supply
- Output: 0–80 V, 0–40.5 A
- Maximum output power: 1080 W
- CV/CC prioritization and adjustable slew rate
- Standard interface: LAN, USB; analog control/monitoring connector
- Optional interface: GPIB‑USB adapter, RS232‑USB cable
- Series/parallel capability: up to 2 units in series, up to 3 in parallel
- Protections: OVP (adjustable), OCP (adjustable), OTP, AC-fail shutdown
- Input: nominal 100–240 Vac (operating range 85–265 Vac), 47–63 Hz
- Weight (1080 W model): approx. 7.5 kg
- Dimensions (1080 W model): 214 × 124 × 350 mm
- Cooling: Forced air (internal fan)
- Display: 4-digit
- CV mode: line regulation 43 mV, load regulation 45 mV, ripple p-p 100 mV, ripple r.m.s. 14 mV
- CC mode: line/load regulation 45.5 mA, ripple r.m.s. 81 mA
- OVP setting range for 80 V model: 8–88 V (accuracy ±2% of rated output voltage)
- OCP setting range for 80 V model: 4.05–44.55 A (accuracy ±2% of rated output current)
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