(editor’s note: Intrigued by the problem? Have a question or another solution? Then click the “Read more” link and follow the conversation on EDAboard.com or log in to EDAboard and participate in the power electronics forum threads.) Switch design by using solid devices – I want to know how to design a solid static switch to replace […]
AC-DC
Open-frame supplies hit 30 W/in3 densities
The VOF‑180 and VOF‑225A series, outputting 180 W and 225 W of continuous power respectively, feature high efficiencies up to 94% and high power densities up to 30 W/in3. Housed in compact, low profile packages measuring as small as 2x4x0.75 in. (50x101x19 mm), these ac-dc power supplies provide space and energy saving benefits for IT […]
Low-profile open-frame supplies provide up to 550 W
The VOF‑275, VOF‑350, and VOF‑550 series from CUI’s Power Group are housed in compact, low profile packages measuring as small as 3 x 5 x 0.75 in (76 x 127 x 19 mm) with high power densities up to 24.4 W/in³. Coupled with high efficiencies up to 94% and no-load power draw as low as 0.5 […]
Open-frame 15-W supply carries industrial, medical safety ratings
The TPP15 family of miniaturized, open-frame power supplies offer an extended operating temperature range of -40C to +85C and both industrial and medical safety approvals. These 15 watt AC/DC power supplies from TRACO POWER feature reinforced insulation with I/O isolation of 4,000 VAC, are 2 X MOPP compliant with leakage current below 75μA and are […]
Power adapters meet DoE Level VI/COC Tier 2 standards
Artesyn Embedded Technologies announced three new series of external power adapters to enable original equipment manufacturers (OEMS) to meet the Department of Energy Level VI and European Code of Conduct (CoC) v5 Tier 2 Directive efficiency standards. These standards aim to reduce waste energy from external power supplies both from no-load and normal operation and […]
Ultra-high density Li–ion battery building block targets energy storage systems
A second-generation (Gen II) lithium-ion battery cell puts out 65 Ah and 223 Wh/kg over a long cycle life and delivers 47% more energy density compared to first-generation (Gen I) technology. Developed by XALT Energy, the 65-Ah UHE cell has a strong cycle and calendar life when compared to similar cells. It is a good […]
Top power electronics threads on EDAboard.com – September
(editor’s note: Intrigued by these power electronics problems? Have a question or another solution? Then click the “Read more” link and follow the conversation on EDAboard.com or log in to EDAboard and participate in the power electronics forum threads.) AC DC full bridge power supply – I’m designing a variable output full bridge power supply […]
Waterproof LED drivers include PFC
The PWM-120-12DA / PWM-120-24DA is a constant-voltage-output design meeting Digital Addressable Lighting Interface (DALI) control system standards IEC62386-101,102,207. Suitable applications include LED commercial, office lighting, and indoor LED decorative lighting. The constant-voltage PWM style output is at 1.47 kHz. The constant-voltage PWM mode maintains color temperature and brightness homogeneity when driving different styles of LED […]
Basics of power cords in North America
All ac power cords sold in North America must meet a NEMA standard and UL standards that spell out factors such as the minimum wire gage and the connector style. Most cords sold for industrial use, and even many of the cords targeting home appliances, have a third contact in addition to the power and […]
2-W and 4-W board-mount supplies operate from 90 to 305-Vac inputs
The KAS series ac-dc power supplies is rated at 2 and 4 W. Accepting 90 to 305-Vac, 47-440-Hz inputs, these board-mounted converters will operate from 115, 230 and 277-V nominal inputs. Target applications include security systems, building automation, professional household appliances, portable equipment and products requiring a separate standby voltage. The series has a double-insulated […]