August 17th, 2012
The TDA5140A device is a bipolar integrated circuit which commonly used to draw 3-phase brushless DC motors in full-wave mode. This Brushless DC motor drive device is sensorless using the back-EMF sensing technique to sense the rotor position. This device used to be apply in applications such as VCR, laser beam printer, fax machine, blower, automotive. [...]
August 15th, 2012
This circuit below is part of a microprocessor-based digital tachometer and hourmeter with a built-in overspeed switch which is accurate to measure speed and running hours. It is MTH6 digital tachometer and hourmeter and is equipped with easy calibration feature. This kind of device can be used in applications such as generators, compressors, marine engines, oil field equipment and etc. [...]
August 14th, 2012
The laser driver circuit diagram shows the schematic of an IC-NZN application, an all-purpose laser driver circuit. It operates from 3.3 to 5.5 V and can drive N, M, and P-type laser diodes with or without monitor diode. The latest generation of all-purpose integrated laser driver solutions supports switching frequencies up to 155 MHz and laser currents up to 300 mA. [...]
August 8th, 2012
And here is the NCP1034 datasheet(source:onsemi.com). [...]