UNI-T UDP3303A Power Supply
The UNI-T UDP3303A is a compact 3-channel DC bench power supply designed for lab, repair and development work. It combines two fully adjustable channels for general-purpose bench use with a third low-voltage selectable channel for logic/ICS testing. The front panel arranges coarse/fine control knobs, numeric displays and indicators for fast setup and readout, making repetitive bench tasks quick and predictable.
Internally the UDP3303A delivers stable, low-noise outputs with fine resolution for precision adjustment and built-in protections (OVP/OCP/short-circuit/OTP) to protect both DUT and supply. Its total output capability supports moderate power requirements while remaining small enough for crowded workbenches. The product family manual and retail datasheets document measurement accuracy, resolution and protection behavior.
Features:
- Three independent output channels (two adjustable, one selectable low-voltage).
- Two adjustable channels: up to 30 V / 3 A per channel.
- Third channel: selectable low-voltage output (1.8V / 2.5V / 3.3V / 5V) for logic supply needs.
- Total output power ~195 W (aggregate limit across channels).
- Fine voltage/current resolution (voltage ≈10 mV, current ≈1 mA).
- Built-in protections: OVP, OCP, short-circuit protection and thermal protection.
- Memory groups for recall of common settings (M1–M5 on supported firmwares).
Specifications:
| Specification: | Value / Notes: |
|---|---|
| Model: | UNI-T UDP3303A. |
| Channels: | 3 (CH1, CH2 adjustable; CH3 fixed/selectable). |
| CH1 / CH2 Output Range: | 0–30 V, 0–3 A (each). |
| CH3 Output Range: | Selectable fixed/low voltages (e.g., 1.8 V / 2.5 V / 3.3 V / 5 V) with up to 3 A (see manual). |
| Total output power: | ~195 W (aggregate). |
| Voltage resolution: | 10 mV (typical front-panel resolution). |
| Current resolution: | 1 mA (typical). |
| Voltage accuracy: | Manufacturer lists setting/reading accuracy (refer to datasheet/manual for exact figures). |
| Current accuracy: | Manufacturer lists setting/reading accuracy (refer to datasheet/manual for exact figures). |
| Display: | Multi-segment / numeric front panel display (digital). |
| Protections: | OVP, OCP, short-circuit protection, thermal protection. |
| AC input: | AC mains 100–240 V ±10%, 50/60 Hz (check label on unit). |
| Interfaces (optional / model dependent): | Some UDP3000 versions offer USB/RS-232 or remote control (check specific P/N). |
Applications:
- Precision Circuit Prototyping and Testing.
- Laboratory Bench Power Supply for R&D.
- Battery Charging and Formation.
- Testing and Burn-in of Electronic Components.
- Powering and Testing LED Circuits.
- Educational Experiments in Electronics.
- Servo and Motor Driver Testing.
- Low-Voltage Device Repair and Troubleshooting.
Package Contents:
- 1x Power cord.
- 1x USB cable (when the unit variant includes PC connectivity).
- 1x Alligator-clip test lead (or pair of test leads).
- 1x Quick Start Guide / User manual (paper or on USB).
- 1x Unit (the power supply).
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