Triple Output DC Power Supply Selection
Don't let a cheap power supply ruin your expensive Device Under Test (DUT). Whether you are looking for a basic 3 output dc power supply or an advanced multiple output dc power supply, learn the 4 critical specifications engineers must evaluate before purchasing a lab bench power supply.
1. Ripple & Noise (Linear vs. Switching)
For R&D labs, a Linear power supply is almost always required. Switching supplies introduce high-frequency noise that can corrupt RF, audio, and sensor measurements. Look for Ripple & Noise specs of < 1mVrms / 3mVp-p.
2. Galvanic Isolation
Ensure all three channels are fully galvanically isolated. Cheap supplies often share a common ground internally, which causes ground loops and prevents you from wiring channels in series or parallel.
3. Hardware OVP & OCP
Software protection is too slow. You need hardware-level Over-Voltage Protection (OVP) and Over-Current Protection (OCP) that reacts in microseconds to cut power before your prototype board is fried.
4. SCPI Programmability
If you plan to build an Automated Test Equipment (ATE) rack, ensure the supply supports standard SCPI commands via USB, LAN (LXI), or GPIB for easy integration with Python or LabVIEW.
The "Sweet Spot" Specification
For 90% of mixed-signal design and general electronics labs, the industry-standard "sweet spot" configuration is:
- CH1: 0-30V / 0-3A (Analog / High Power)
- CH2: 0-30V / 0-3A (Analog / High Power)
- CH3: 0-5V / 0-3A (Dedicated Digital Logic)
This configuration allows you to generate up to 60V (in series), 6A (in parallel), or a perfect +/- 15V bipolar supply with a 3.3V/5V logic rail simultaneously.
Find the Perfect Power Supply for Your Lab
Browse our selection of premium, linear-grade programmable triple output DC power supplies.
Check Online Stock & Pricing