Signal Transformer, a Bel group company, announced selected models of the ST and DST Series of high isolation split bobbin, low power transformers, are now recognized by UL as Inherently Limited Class 2 transformers per (UL 5085-3) and now incorporate a UL 1446 Class F 155.0C Insulation System. The ST and DST Series utilize split […]
Transformers
Power Electronics Top Talks in August 2019 on EDABoard.com
Peer-to-peer, engineer-to-engineer questions and answers from the EDABoard.com engineering community around power electronics. Click the “Read more” link and follow the entire conversation and maybe add your two cents by logging in to EDAboard.com 1 minute vs. 1-second isolation voltage test – Some offline transformers are spec’d for 3750vac for 1second (3mA). Some are spec’d […]
Single-phase buck/boost transformer provides 208-V primary, 240-V secondary
Larson Electronics announced the release of a single-phase buck and boost transformer for indoor and outdoor use. This transformer provides protection against critical equipment failures and isolates the power source from the connected device. This 14.75 kVA-rated unit features a primary voltage of 208V AC and a secondary voltage of 240V AC. The MT-BBT-208V-240V-62.5A single-phase buck […]
Three-phase step-up buck and boost transformer for indoor and outdoor use.
Larson Electronics announced the release of a three-phase step-up buck and boost transformer for indoor and outdoor use. This 4.69-amp unit provides protection against critical equipment failures and isolates the power source from the connected device for added protection. This unit carries a 2.21 kVA rating and a primary voltage of 240V Delta. The MT-BBT-240D-270D-3P-4.69A three-phase […]
Miniature surface-mount gate drive transformers qualified for automotive use
TT Electronics announced the introduction of its HA42A and HA86A Series gate drive transformers for the automotive and industrial markets. These miniature surface mount design (SMD) solutions are ideal for high-efficiency Battery Management System applications where size and reliability are critical. HA42A and HA86A gate drive transformers are used in space-constrained scenarios to deliver controlling […]
PSMA Power Technology Roadmap provides critical insights into technology
The Power Sources Manufacturers Association (PSMA) recently released the 2019 edition of the Power Technology Roadmap. The report, which forecasts the power technology and power delivery trends through 2023, includes a printed report along with a feature-rich USB memory drive containing a record number of seventeen recorded webinars with up-to-date explanations of the information contained […]
SMD gate-drive transformers target battery management tasks
TT Electronics announced the introduction of its HA42A and HA86A Series gate drive transformers for the automotive and industrial markets. These miniature surface mount design (SMD) solutions are ideal for high-efficiency Battery Management System applications where size and reliability are critical. HA42A and HA86A gate drive transformers are used in space-constrained scenarios to deliver controlling pulses […]
Planar transformers optimized for 200-700 kHz apps
Premier Magnetics announces its PM-PTxxx Series of frequency-optimized planar transformers. The new line, offering models with ratings to 250W, are designed for forward converter, full/half bridge and active clamp applications utilizing switching frequencies between 200 KHz and 700 KHz. Proprietary layout techniques for the circuit board windings result in optimization of transformer impedance and interwinding […]
Working with higher voltages, Part 1: Voltage boosters
Whether for efficiency or due to the device physics, many applications require voltages ranging in the tens, hundreds, or even thousands of volts; the circuits which produce these voltages start with basic charge pumps and extend to voltage multipliers with simple schematics but many subtleties. Lower-voltage circuitry is the trend, with ICs and designs operating […]
Double choke optimized for SMT assembly
With its WE-TDC HV, Würth Elektronik eiSos presents a further double choke optimized for SMT assembly. The magnetically shielded 1:1 transformers with an isolation voltage of 2,000 V stands out from similar components through lower losses and a low level of stray inductance. The WE-TDC HV product family encompasses nine different models – five in […]
