HB LEDs present several advantages over traditional lighting technologies: they do not contain hazardous materials such as the mercury in CCFLs, they consume less power, and they have much longer lifespans.

This application note demonstrates a data logger application that can run on the Explorer 16 Demo Board with the USB PICtail Plus Daughter Board.

Microcontroller applications can easily support USB embedded host functionality.

This application note provides an overview of the I2C bus (focusing on its physical layer), discusses the challenges in isolating I2C interfaces, and describes iCoupler solutions for isolating I2C interfaces.

To avoid the necessity of adding numerous external components, which would increase the application cost and possibly make reliable contact-resistance measurement more difficult, the MAX13362 (datasheet) was carefully designed to be robust.

The demonstration board included in this shipment converts 90VAC to 135VAC input, and drives seven, or eight series connected LED’s at 350 mA average current. The LM3445 switching frequency is set at a nominal 225 kHz. This is a four layer board using the bottom and top layer for component placement.

Many of today’s modern alarm systems employ a moving coil loudspeaker as the siren element. To interface between the alarm system’s processing unit and the speaker, the usual circuits consist of a signal generation IC and a discrete ’H’-bridge.

The following note describes some of the features, benefits and applications of the FMMT617 NPN and FMMT717 PNP SOT23 transistors developed by Zetex.

A low voltage reference can be constructed using two small ICs and a few external resistors, cutting down on the current consumption from an average of about 440 µA of quiescent current to a meager 2.4µA.

LCD Backl ighting has generated widespread interest from many diverse disciplines within the engineering industry.