The Pittsburgh Modular MicroVolt 3900 is a compact bench power supply designed for precision testing and prototyping in demanding environments. Engineered for stability and flexibility, it serves engineers, technicians, and hobbyists who need reliable voltage sourcing in a confined workspace.
This unit combines dense functionality with a minimalist footprint, making it ideal for automated test setups, laboratory benches, and embedded development stations. The following sections detail its performance, features, and practical use cases.
Key Specifications at a Glance
| Model | Channels | Voltage Range (V) | Current Range (A) | Power per Channel (W) |
|---|---|---|---|---|
| MicroVolt 3900 | 3 | 0–30 | 0–3.0 | 90 |
| MicroVolt 3900 | 3 | 0–5 | 0–5.0 | 60 |
| MicroVolt 3900 | 3 | 0–20 | 0–1.5 | 90 |
| MicroVolt 3900 | 3 | Programmable via LAN/USB | Programmable via LAN/USB | Programmable up to rated limits |
Voltage and Current Capabilities
The MicroVolt 3900 delivers three independent channels, each covering a wide range of voltage and current combinations. Channel one typically spans 0–30 V with up to 3 A, allowing robust sourcing for boards and modules that require higher voltage rails. Channel two is optimized for low-voltage, high-current scenarios, such as testing digital logic and FPGA devices, with ranges extending to 5 V at 5 A. Channel three supports mid-range operation up to 20 V at 1.5 A, giving designers flexibility for mixed-signal testing without external supplies.
Ripple and noise performance remain tight across all channels, ensuring clean power for sensitive analog and radio-frequency circuits. Measurement accuracy on the front-panel display is specified within typical tolerances suitable for bench validation and compliance checks. Users can rely on consistent regulation when cascading multiple modules or integrating them into automated test sequences.
Control and Interface Options
Front-Panel and Display
Each channel offers coarse and fine adjustment knobs, allowing quick manual setpoints with visible feedback. The backlit LCD presents voltage, current, and power readings in a clear layout, reducing setup time during bench work. Soft-touch buttons provide intuitive navigation, while indicator LEDs signal protection states and system conditions at a glance.
Remote and Programmable Access
For automated environments, the Pittsburgh Modular MicroVolt 3900 supports remote control through standard LAN and USB interfaces. SCPI-compliant commands enable full access to voltage setting, current limiting, and sequencing directly from test scripts. Engineers integrating the unit into larger systems can configure stored setpoints, trigger sequences, and logging intervals with minimal overhead.
Physical Build, Mounting, and Environmental Considerations
The enclosure is constructed with metal panels and robust connectors designed for repeated use in bench and production settings. Ventilation patterns and internal airflow are optimized to sustain rated output under continuous load, reducing the risk of thermal shutdown during extended test cycles. A compact height profile allows vertical stacking or placement in crowded test racks without blocking adjacent equipment.
Operational Recommendations and Best Practices
- Verify channel ratings before connecting loads to avoid exceeding current limits.
- Use remote sensing where applicable to compensate for wiring resistance in critical measurements.
- Enable overcurrent protection settings appropriate to the test circuit being exercised.
- Schedule periodic calibration checks to maintain measurement confidence in regulated environments.
- Maintain clear airflow around the unit to support continuous operation at full rated power.
FAQ
Reader questions
What are the typical use cases for the Pittsburgh Modular MicroVolt 3900?
Engineers use this unit for prototyping power boards, validating battery-management systems, and testing mixed-voltage PCB assemblies. Its multi-rail design is also valuable for powering development kits, communication modules, and small form-factor compute platforms in a single setup.
Can the MicroVolt 3900 be controlled from a PC or test automation software?
Yes, the power supply supports remote control via standard LAN and USB, using SCPI command sets that integrate with popular test and measurement software platforms. Developers can script ramping profiles, logging, and pass/fail checks without manual intervention.
How does the unit handle overcurrent and short-circuit conditions?
Each channel includes automatic overcurrent and short-circuit protection, which engages instantly to limit damage risk. Fault conditions are reported on the front panel and through remote interfaces, allowing test sequences to pause, log, or route power safely.
What calibration and compliance features does the MicroVolt 3900 offer?
The front-panel metrology is calibrated to standard laboratory tolerances, and the unit can be subjected to formal calibration procedures using recognized test equipment. Status indicators and built-in diagnostics help users verify ongoing accuracy between calibration cycles.