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App note: Adjustable gain with a current sensing

Sunday, November 12th, 2017

Application note from STMicroelectronics for fine tuning gain on current sensing amplifier. Link here (PDF) This application note explains how to use current sensing amplifiers with series resistors on the sense inputs. This approach is especially useful for applications where the gain must be adjusted.

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App note: Intelligent power switches for 48 V battery applications

Sunday, November 12th, 2017

Application note on controling Intelligent Power Switches (IPS) from STMicroelectronics. Link here (PDF) For the last 15-20 years, the automotive electronics market has been moving from electromechanical relays to solid state components for driving all kind of loads. It is obvious why: solid state components are smaller in size, lighter,...

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App note: Position sensing technologies in automotive applications

Sunday, November 5th, 2017

An Autopad(TM) sensor from TT Electronics provides a new non contact position sensing. Link here (PDF) Automotive design engineers are continuously seeking components that offer performance and flexibility beyond those of conventional position sensing technologies. Further still are the requirements that these devices be versatile and adaptable to a wide...

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App note: Thermal management basics and its importance for LED luminaire performance and cost

Sunday, November 5th, 2017

Article about thermal management on LED luminaire from TT Electronics. Link here (PDF) LED luminaires are being marketed today as an alternative lighting technology that reduces power consumption and maintenance costs for commercial and residential installations. Thermal management has a significant impact upon the lifetime, performance and cost of an...

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App note: Buried capacitive sensors for tamper protection

Sunday, October 29th, 2017

A short app note from Silicon Labs on burying pads to prevent snopping on keypads. Link here (PDF) An individual’s financial matters are increasingly electronic in nature and decreasingly interpersonal. As financial institutions replace human interaction with electronic interfaces such as ATMs, the need to make electronic circuits tamper-proof becomes...

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App note: Driving E ink segmented displays

Sunday, October 29th, 2017

Application note on driving E Ink displays from Renesas. Link here (PDF) E Ink segmented displays are direct drive displays consisting of E Ink Vizplex Imaging Film sandwiched between two electrode layers, the top plane and the backplane, and then encased in an environmental barrier solution to protect the film...

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App note: Grid-connected solar microinverter reference design

Sunday, October 22nd, 2017

A good read from Microchip on the theory behind inverter design connected to grip power. Link here (PDF) There are two main requirements for solar inverter systems: harvest available energy from the PV panel and inject a sinusoidal current into the grid in phase with the grid voltage. In order...

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App note: On-grid solar microinverter on Freescale MC56F82xx/MC56F82xxx DSCs

Sunday, October 22nd, 2017

Application note from Freescale Semiconductor about microinverter solution develop together with Future Electronics. Link here (PDF) In recent years, demand for renewable energy has increased significantly. The development of devices utilizing clean energy such as solar, wind, geothermal, and fuel cells attracts more and more attention. Solar energy harvesting is...

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App note: Implementation of a single-phase electronic watt-hour meter using the MSP430AFE2xx

Sunday, October 15th, 2017

Another energy meter from Texas Instruments using MSP430AFE2xx. Link here (PDF) This application report describes the implementation of a single-phase electronic electricity meter using the Texas Instruments MSP430AFE2xx metering processors. It includes the necessary information with regard to metrology software and hardware procedures for this single chip implementation.

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App note: Atmel AVR465: Single-phase power/energy meter with tamper detection

Sunday, October 15th, 2017

A good read from Atmel on their 8-bit microcontroller single-phase energy meter design. Link here (PDF) This application note describes a single-phase power/energy meter with tamper logic. The design measures active power, voltage, and current in a single-phase distribution environment. It differs from ordinary single-phase meters in that it uses...

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App note: Capacitance change with applied DC voltage

Sunday, October 8th, 2017

Tantalum comparison to other types of capacitors shows stable capacitance in this app note from Vishay, Link here (PDF) Tantalum capacitors in general - and Vishay’s 298D/TR8/TM8 MicroTan tantalum capacitors in particular - demonstrate very stable performance over the DC voltage (bias) applied in an application. At the same time,...

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App note: Extend current transformer range

Sunday, October 8th, 2017

Design note from Texas Instruments on technique in resetting and negative voltage generation from current transformers. Link here (PDF) Transformers are used extensively for current sensing because they can monitor currents with very low power loss and they have wide bandwidth for good waveform fidelity. Current transformers perform well in...

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App note: USB Type-C, CC Pin Design Considerations

Sunday, October 1st, 2017

Application note from ON Semiconductor on USB Type-C connector supporting non-USB standard charging protocol, Link here (PDF) When designing hardware systems with Type−C connectors, a designer also has to consider all legacy, standard, and non-standard specifications that exist in the USB connector eco system. With the introduction of the Type−C...

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App note: PCB routing methodology for SuperSpeed USB 3.1 switch family from ON Semiconductor

Sunday, October 1st, 2017

Routing USB 3.1 traces app note from ON Semiconductor. Link here (PDF) The introduction of USB Type−C has provided a significant launch opportunity for USB3.1 data rates across an array of platforms from portable to desktop and beyond. This proliferation of Type−C will certainly create challenges due to the high...

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App note: How to measure the power consumption of a peripheral

Sunday, September 24th, 2017

Application note from NXP Semiconductors on MCU peripheral power consumption measurement. Link here (PDF) This Application Note outlines the steps to measure the power consumption of a peripheral and figure out some key points in the measurement. The document takes low-power timer (LPTMR) and LPUART as examples to introduce the...

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App note: TEA1938T GreenChip SMPS control IC

Sunday, September 24th, 2017

TEA1938T SMPS control IC application note from NXP Semiconductors. Link here (PDF) The TEA1938T is a high-featured low-cost DCM and QR mode flyback converter controller. It provides high efficiency at all power levels and very low no-load power consumption at nominal output voltage in burst mode operation. To minimize ripple,...

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App note: Using trench technology MOSFETs in hot swap applications

Sunday, September 17th, 2017

Safely use trench MOSFETs on hot swap application by determining its operation within its SOA in a limited time, app note from International Rectifier. Link here (PDF) Hot Swap circuits are used to allow for “Hot Plugging” of circuit boards into back planes. The applications that require such functionality are...

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App note: Class D audio amplifier performance relationship to MOSFET parameters

Sunday, September 17th, 2017

Application note from International Rectifier on MOSFET paremeters to consider when designing a Class D audio amplifier. Link here (PDF) Class D audio amplifier is a switching amplifier that consists in a pulse width modulator (with switching frequency in order of several hundred kHz), a power bridge circuit and a...

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App note: 12Vac LED Driving without smoothing capacitors

Sunday, September 10th, 2017

Application note from Diodes Incorporated on driving 12Vac LED without smoothing capacitors with their Zetex ZXLD1360 LED driver IC and SBR2A40P1 super barrier rectifier. Link here (PDF) LED based architectural lighting is now coming of age, but there are still some problems to be considered when designing luminaires to be...

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App note: CAN Bus – Common high speed physical layer problems

Sunday, September 10th, 2017

App note from Vector on three commonly encountered high speed CAN physical layer problems - bus termination, signal levels, and ground. Link here (PDF) Determining the exact cause of a CAN problem is not at all simple. Is the problem in hardware or software? Is the problem on the circuit...

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