Bruce Rose, Principal Applications Engineer, CUI Inc A buzzer can provide a cost-effective yet intuitive aspect to the user interface of a wide variety of products, such as a home appliance, security panel, door-entry system or computer peripheral. Usually, the choice is between either a magnetic or piezoelectric type. It should be an easy decision, […]
Power operating limits: How to choose the right power supply
Not all power supplies react to over and under-voltages and currents in the same way. It pays to know the tradeoffs of different approaches to protection. Ron Stull | CUI Inc. Power supplies can experience operating conditions outside normal specified limits, such as input under- or over-voltage, or variations in load and ambient temperature. These […]
Low-power, encapsulated ac-dc power supplies include 3-W and 5-W models
CUI’s Power Group today announced the addition of 3 W and 5 W models to its line of low power, encapsulated ac-dc power supplies. Available in board mount, chassis mount, wire lead, and DIN rail configurations, the single output PSK‑S3 and PSK‑S5B series are housed in compact packages measuring as small as 1.46 x 0.97 […]
Why is it vital to include power factor in ac-dc efficiency measurements?
Ron Stull of CUI explains what power factor is, how it affects efficiency calculations and how it is measured With today’s concentration on energy savings, design engineers need to know with increasing accuracy what their ac-dc power converter efficiency is. Measuring the ratio of output power to input power is simple for dc-dc converters, but […]
Understanding MTBF and the principles of reliability engineering
The Mean Time Between failures (MTBF) quoted in a product datasheet is often incorrectly assumed to provide a direct indication of expected lifetime. In fact, reliability is a statistical concept – it is the probability that an individual unit of any given product, operating under specified conditions, will work correctly for a specified length of […]
External power supply line meets new IEC 62368-1 standard
CUI’s Power Group today announced that it has upgraded the majority of its external ac-dc power supplies to the new IEC 62368-1 standard for ICT and AV equipment. Set to supersede the outgoing IEC 60950-1 and IEC 60065 standards on December 20, 2020, IEC 62368-1 will introduce fundamentally different guidelines based on hazard-based safety engineering principles. […]
Chassis mount ac-dc power supplies housed in low-profile metal case
CUI’s Power Group today announced a new line of compact, chassis mount ac-dc power supplies housed in an enclosed metal case. The VGS‑B series offers power ratings from 35 to 350 W with low 30 mm profiles and compact packages as small as 99 x 82 x 30 mm (3.89 x 3.22 x 1.18 in). […]
How to specify the proper Peltier module for your design
The latest generation of Peltier cooling modules can be a powerful addition to a designer’s thermal management toolbox. Robust and reliable, they can cool an IC or various other components – such as an LED or laser diode – to a target temperature and ensure stability even if the load changes rapidly. The modules are […]
How USB Type-C connectors hold the key to maximizing data speeds and power delivery
Bruce Rose, CUI The new USB Type-C connector should become a common sight in new laptops and mobile devices over the next couple of years. Smaller and easier to use – allowing plugs to be inserted in either direction – the new mechanical interface has all of the features needed to support the advanced USB electrical […]
1-W ac/dc supplies come in ultra-compact SIP packages
CUI’s Power Group today announced the addition of two models to its PBO family of ultra-compact ac-dc power supplies. Outputting 1 W of continuous power, the open frame PBO‑1 and PBO‑1‑B series are housed in vertical and right-angle SIP packages, respectively. The vertical PBO‑1 series measures as small as 35 x 11 x 18 mm […]
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