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DC Converter

Driving White LED with LM3354 Switched Capacitor Voltage Regulator Circuits 

July 1st, 2009

LM3354 is a switched capacitor DC/DC converters that can be programmed for an output of 4.1V, which is an ideal LM3354 Switched Capacitor Voltage Regulator Circuit Schematic voltage on driving white LED applications such a color LCD display in cellular phones, PDAs, and handheld computers. For common, white LED are used for backlight or frontlight purposes but it needs the battery voltage to be boosted since the white LED has a high voltage drop as compared to another LED. [...]

Step Down Converter Circuit Diagram using MC34063A and the Datasheet 

September 1st, 2009

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The MC34063A Inverting Switching Regulators Series Datasheet and Circuit Diagrams 

August 2nd, 2009

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The FAN5631/5632, a 250mA Step-Down Charge Pump Datasheet 

July 23rd, 2009

It is recommended that you should not exceed FAN5631/5632 or design them to their Absolute Maximum Ratings as stated to ensure optimal performance in the datasheet specifications. The recommended operating conditions are Vcc (supply voltage range) 2.2 to 5.5V, Iout (Output Current/Vin > 2V) max 250mA, and Ta (operating ambient temperature range) -40 to +85 C which typically +25 C. [...]

TDA5140A Brushless DC Motor Circuit and Datasheet 

August 17th, 2012

The TDA5140A yet embody an Uncommitted Transconductance Amplifier (OTA) that can be appled as a control amplifier. The output is adequate for directly driving an external power transistor. The TDA5140A is built for systems with low current consumption, there are: use of I2L logic, adaptive base drive for the output transistors, likelihood of using a pick-up coil without bias current. [...]

Adaptable Digital Tachometer Circuit Diagram and Datasheet 

August 15th, 2012

A: Apply momentary ground to reset hours to zero.
B: When using the MTH6 with inductive loads, we recommend installing a suppression diode across all coils.
C: Terminals 4 and 8 may be grounded on negative ground power supply.
D: Alternator must be equipped with a tach terminal (auxiliary AC terminal).
E: Connecting full battery potential to terminal 9 can cause damage
to the switchgage. Shutdown circuit is rated for 300 mA continuous. Circuit grounds out at set point. [...]

Great and Rapid Laser Driver Circuit for Multi-Function Integrated Laser Driver 

August 14th, 2012

Integrated laser drivers is recommended for fast switching, since signal changes will move faster because of reduced wiring line inductance and capacitance. The use of integrated laser driver circuit gives some benefit such as: output power stability improvement, board space reduction, error monitoring, better dynamic performance, and MTBF reliability improvement. [...]

LM348 Sine Wave Generator Circuit Diagram 

August 10th, 2012

By controlling the size of the resistor in one of the four filters the frequency could be adjusted. In order to get the correct size signal, the we must use a potentiometer to be placed to the one of the resistors while also measuring oscilloscope’s output. This will be used to know what size of resistor should be worked at 60Hz. [...]

NCP1034 DC to DC Buck Converter Circuit Diagram and Datasheet 

August 8th, 2012

The schematic diagram shows NCP1034 demo board which is designed with many options. You can see such a linear regulator which has function for powering the IC with Zener diode, compensation circuit of second or third type, ceramic or electrolytic output capcitors and various input capacity. [...]

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