August 22nd, 2009
This AT9933 is a PWM controller IC, designed to control an LED lamp driver using a low-noise boost-buck. It produces a low-frequency PWM dimming input that can accept an external control signal with a duty cycle of 0 – 100% and a high dimming ratio, according to the datasheet. [...]
July 24th, 2012
5. GND = Ground, internally connected to pin 1.
6. REF = Reference Input, connect to GND via an external resistor to
adjust the output current.
7. Q = Output.
8. I = Input, block to GND directly at the IC with a 100 nF ceramic
September 1st, 2010
For full read on LM3909 Typical 1.5V Flasher Schematic Diagram you may download the LM3909 datasheet here (source: national.com) [...]
July 18th, 2012
According to the TLE4241GM datasheet, the IC may produce an adjustable output current through any other device such as SET, PWM, reference resistor in an independently from load and supply voltages. Its adjustable output current make this device can be applied in a broad range of LED applications. [...]
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
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 10th, 2012
The phase shift oscillator works in such a way that if the amplitude of the inverting amplifier is not high enough the system will continually attenuate the signal until the amplitude is zero, it was therefore decided to change the amplification power of the inverting amplifier. [...]
August 8th, 2012
And here is the NCP1034 datasheet(source:onsemi.com). [...]