September 2020 Tech Focus

TechFocus

POWER SUPPLIES

Power sources, from benchtop units to floor-standing cabinets, are critical tools in the test of products from communications ICs to automotive drivetrain and battery systems. Here are some recent offerings of that ilk.

Programmable linear AC power sources

Pacific Power Sourceintroduced a range of precision programmable linear AC power sources for a wide range of AC power test applications. The LMX Series consists of over 20 different models ranging in power from 500VA to 30,000VA. Compared to legacy switching AC power sources, the LMX Series uses linear technology to offer high performance with respect to output noise, voltage distortion, output impedance, and peak current capability. The LMX Series also offers a 15Hz to 5,000Hz output frequency range, which is higher than most switchmode AC power sources. Pacific Power Source

Programmable Bi-Directional Power Supply

Elektro-Automatik, a supplier of automated test equipment for power electronics products and systems, announced the EA-PSB 10000 30KW Programmable Bi-directional Power Supply. The 4U rack-mounted PSB 10000, engineered with advanced SiC power conversion devices switching at 150 kHz, boasts the industry’s best power density—requiring as little as half the rack space for the same power output as competing programmable supplies. The PSB 10000 combines an auto-ranging programmable power source and programmable load providing a single-chassis solution for simulating source and load for a wide range of applications, including battery chargers and batteries, electric vehicle power trains, solar inverters, and other power conversion devices and systems. The energy utilized in the test is then returned to the ac source via the programmable load’s regenerative output. The result is up to 95% reduction in the energy consumed in the test. The PSB 10000 features a wide range 3-phase input voltage 342-528V, 45-66 Hz, with output voltage ratings of 60V – 2,000V and current ratings from 40A-1000A. Pricing from $32,035. Elektro Automatik

240 W DIN rail power supplies for harsh environments

TRACO POWER has released its TIB 240-EX family of 240 Watt DIN rail power supplies that are designed for harsh environments & hazardous locations with certifications for ATEX II3G and UL HazLoc Class I/Div 2 standards. These products feature: 24/48Vdc outputs (-2% ~ +17% VADJ Range); high efficiency operation of 95%; 150% peak power for four seconds; and packaged in a ruggedized metal enclosure that is EN61373 qualified to the rigorous railway shock and vibration standards. Protection circuits include back power immunity, short-circuit/overload protection, and a DC OK dry signal contact. TRACO Power

Solid-State GaN Power Amplifier

Exodus’ AMP2041-1 solid-state GaN-based power amplifier operates from 1 to 2.5 GHz, with an output power of over 2.2 KW and a gain of over 63 dB. It has Type N Female RF Input/Sample ports, with a 1 5/8” RF output, with rack-mountable drawers housed in a cabinet for ease of use. The AMP2041-1 is suitable for applications requiring high power and broadband coverage for EW/ECM, as well as general EMC testing in labs, chambers, or applications requiring high field levels. Exodus Advanced Communications