DATASHEET and Circuit Diagram

The following schematic shows Increasing Output Voltage of a Fixed Linear Regulator Circuit Diagram using 3-terminal shunt regulators or references. The 3-terminal shunt regulators provide their precision function to turn the medium accuracy linear regulators into precision ones.

As shown in the circuit above, both the output voltage and its accuracy are performed by the TLV431, R1 and R2. The 5A output current, output current limiting, and thermal shutdown of the regulator’s features are still available whilst combining the best of both devices.

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The BU406 transistor is a Silicon Epitaxial-Base Planar NPN transistor. These devices are used for horizontal deflection output stages of large screens MTV receivers with 110 C CRT.

In the datasheet you will find absolute maximum rating for Collector Base Voltage (Vcbo): 400V, Emitter Base Voltage (Vebo): 6V, Collector Current (Ic): 7A, Base Current (Ib): 4A. Electrical Charactheristics : 70-240 for the DC Current Gain, 1.2V Base Emitter Saturation Voltage, 1V Collector Emitter Saturation Voltage, 0.75us Turn-off Time and 10 MHz Transition Frequency.

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If you stuck on your options in selecting the proper and suitable integrated circuit (IC) for a power supply applications, this article maybe you looked for. You can consider the factors such as cost, solution size, power source, duty cycle, and output power that must be weighed.

Determine the best solutions for your power-supply applications with portable, low battery consumption, operate from single cell Li-ion battery that is charged when 12V supply are available as shown in the figure (click to enlarged). You will be taken to the sections such selecting the best topology (inductive switcher, linear regulator, charge pump, and etc), what topology should be used, selecting the best ICs for the job, how if no I2C interface available, and then calculating the system efficiency difference.

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The following document covers the basic of modifying Kodak disposable camera circuit to function as a high voltage current limited supply. It described the simplest modification of the circuit to be functioned as an inverter that converts 1.5V to 330 VDC or higher, accordingly.

The circuit diagram shows the original Kodax MAX Flash Unit including the semiconductors that built the circuit. The shown circuit diagram is the unmodified one which is for the regular Kodak and the Kodak Max that should be very similar if not identical. See materials and tools needed, how to disassembly and then rebuilt the modification one to be a completed project.

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In order to keep the speed of the motor constant when loads are applied, a control application circuit is needed to apply the purpose. The H-Bridge circuit may control the speed and direction of the motor. The below diagram shows H-Bridge with 4 inputs and external power supply, the control application must allow the motor to be operated in forward and reverse directions.

The motor will rotate in one direction while if Q4 and Q2 are on (Q1 and Q3 are off) and vice versa. If, transistors (Q3 and Q2) and/or (Q4 and Q1) are on the power supply becomes shorted to ground. The transistors are protected from large reverse voltages and currents by the diodes (D1-D4), while Resistors R1-R4 limit the currents into the bases of the Darlington configurations.

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The herein circuit design provided a chip for inductive battery charging system which needs no external component instead of an antenna to capture electromagnetic energy field for being applied in smart-card applications. The circuit is implemented to charge lithium cells (4mA 4.2V) to be targeted on the smart-cards with secondary batteries.

The figure shows schematic diagram of the charging architectural sytem. You will be taken into sections such the system architecture and the charging profile of rechargeable batteries, description of the different blocks and their purpose (Mutual inductance coupling, Voltage limiter, Rectifier, Current regulation, Voltage regulation, Temperature control, Pass-element, OR-gate, Discharge stop), the overall chip and the measurement results.

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