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App note: Dimming InGaN LEDs

Sunday, February 24th, 2019

App note from OSRAM on InGaN LEDs dimming method without penalty on its wavelength. Link here (PDF) While the InGaN technology produces the brightest light output across Blue, Deep blue, Verde, True green and White, it is important to understand that the wavelength of the light emitted depends on the...

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App note: Securing vibration motor leads and wires

Sunday, February 17th, 2019

App note from Precision Microdrives on how to properly connect wires on to vibration motors for reliability. Link here Vibration motors require electrical power, which must be delivered by wires or PCB tracks to the motor. Precision Microdrives vibrating motors are available in a range of connector forms. From stock,...

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App note: Vibration Motors – Voltage Vs Frequency Vs Amplitude

Sunday, February 17th, 2019

All about vibration motors and how its frequency and amplitude be controlled in this app note from Precision Microdrives. Link here We’re often asked how to adjust the vibration amplitude or frequency of our various vibration motors. In this article, we’ll look at how simple it is, why it can...

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App note: Ceramic resonators

Sunday, February 10th, 2019

All about ceramic resonators app note from Abracon. Link here (PDF) Why Ceramic Resonators? Ceramic resonators stand between quartz crystals and LC/RC oscillators in regard to accuracy. They offer low cost and high reliability timing devices with improved start-up time to quartz crystals.

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App note: MELF resistors – The world’s most reliable and predictable, high-performing film resistors

Sunday, February 10th, 2019

App note from Vishay on why MELF resistors are so successful and has no alternative in today's application. Link here (PDF) For more than 25 years, Vishay’s MELF resistors have successfully met the demanding requirements of the automotive industry. They offer superior SMD resistor performance in terms of accuracy, stability,...

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App note: Understanding the characteristics of Li-ion batteries and Richtek power management solutions

Sunday, February 3rd, 2019

App note from Richtek on how to work with Li-ion batteries properly. Link here Lithium-ion/polymer rechargeable batteries, which have been widely used today, have distinguished properties, but are very delicate and have to be used with extreme care. Improper use of Li-ion batteries will bring about catastrophic consequences. The incidences...

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App note: Power IC solutions for IoT / Portable / Wearable / Battery-Powered applications

Sunday, February 3rd, 2019

A tidy and organized power solution list from Richtek. Link here (PDF)

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App note: Driving LEDs with a PIC Microcontroller

Sunday, January 27th, 2019

An App note from OSRAM on an Intelligent control circuitry example using a PIC Microcontroller. Link here (PDF) Nowadays, applications increasingly make use of LEDs as a replacement for traditional light bulbs. For example, LEDs are frequently used in the design of automobile tail lights, signal lights, traffic signals, and...

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App note: Package-related thermal resistance of LEDs

Sunday, January 27th, 2019

App note from OSRAM on thermal resistance for LEDs and IREDs (IR emitting diodes). Link here (PDF) In order to achieve the expected reliability, lifetime and optimal performance of LEDs, especially for high-power LEDs, appropriate thermal management is of the utmost importance. One of the key parameters for good thermal...

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App note: Increasing accuracy in feedback circuits and voltage dividers with thin film chip resistor arrays

Sunday, January 20th, 2019

App note from Vishay on using chip resistors to achieve long-term stability. Link here (PDF) Thin film chip resistor arrays consist of several resistors of equal or different values combined in one package. During the manufacturing processes and the device's lifecycle, all the particular resistors virtually experience identical conditions, which...

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App note: Custom magnetics – What are they and when do you need them?

Sunday, January 20th, 2019

Consideration factors before going to custom magnetic request from manufacturer, an app note from Vishay. Link here (PDF) There are many manufacturers that claim they build custom magnetics. However, there is often confusion as to what constitutes custom magnetics and whether or not a designer actually needs them or can...

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App note: Simplify home audio systems With the PCM9211 – A versatile audio interface transceiver

Sunday, January 13th, 2019

A digital interface PCM9211 from Texas Instruments app note. Link here (PDF) Large-screen HDTVs are selling in huge volumes over last few years, primarily driven by amazing improvements in picture quality & form factor (thinner screens). The form factor constraints from having skinny screens result in tiny built-in speakers that...

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App note: Noise suppression for wireless headphones

Sunday, January 13th, 2019

Wireless headphone interference investigation from muRata. Link here Recently, the popularity of wireless headsets has been growing as the number of situations where people “play sports while listening to music” increases. Bluetooth is frequently used for communication between smartphones and headsets. However, audio can skip due to communication errors, so...

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App note: The Phytochrome system – Why use far-red?

Sunday, January 6th, 2019

App note from Würth Elektronik on why plants evolved to use far-red wavelengths and why it is essential for them. Link here (PDF) The light requirement of plants is now known to be far more complex than originally thought leading to the development of numerous LED technologies that produce a...

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App note: CeraLink® Capacitors

Sunday, January 6th, 2019

Compact and high capacitance ceramic capacitors from TDK electronics. Link here (PDF) CeraLink is a family of very compact capacitors for stabilizing voltages in the DC link. They are therefore suitable for use as either snubber or DC link capacitors. These products are based on PLZT ceramics and are designed...

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App note: Linear regulator specifications

Sunday, December 30th, 2018

Thorough items on a linear regulator datasheet provides valuable details about its proper usage discussed in this App note from ROHM semiconductor. Link here (PDF) A linear regulator data sheet includes a specifications table that lists output voltage values and precision. Besides, very important information such as maximum ratings, operating...

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App note: Connecting LDOs in parallel

Sunday, December 30th, 2018

App note from ROHM semiconductor on combining LDOs for higher load capacity. Link here (PDF) When you want to increase the output current capacity of an LDO, or when the power dissipation of a single LDO is insufficient, you might think of connecting LDOs in parallel if you need to...

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App note: Basics and low-cost solution proposals to move from legacy USB2.0 connector to USB Type-C™ connector with STM32 devices

Sunday, December 23rd, 2018

App note from STMicroelectronics about interfacing STM32 legacy USB 2.0 to USB Type-C. Link here (PDF) This application note is a guideline to introduce this USB Type-C connector onto platform to replace legacy USB2.0 connectors. It introduces some basis of the two new standards USB Type-C™ and the USB Power...

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App note: Quad-SPI (QSPI) interface on STM32 microcontrollers

Sunday, December 23rd, 2018

Extend memories by using external high speed memories interfaced to Quad-SPI modules on STM32 micros, app note from STMicroelectronics. Link here (PDF) This application note describes the Quad-SPI interface on the STM32 microcontrollers and explains how to use the module to configure, program, and read external Quad-SPI memories. It describes...

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App note: How to avoid chipLEDs sticking to cover tape during automated tape-and-reel assembly

Sunday, December 16th, 2018

Investigative app note from Vishay on preventing too light components from sticking on the cover tape of their reel. Link here (PDF) Customers have informed Vishay that 0603 LEDs (ChipLEDs) supplied in tape and reel format sometimes stick to the PSA cover tape that is peeled off from the carrier...

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