L200 DC Motor Speed Control

This diagram tells us about how to use L200 device for the speed control of permanent magnet motors. By means of R1 and R2, we can obtain the desired speed, proportional to the voltage at the terminal of the motor. Vm= Vref (1+R2/R1) We can use this following equation to obtain better compensation of the internal motor resistance, which is […]

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Op-Amp Application: Inverting Amplifier

The figure below show an operational amplifier circuit. Closed-loop gain given by this circuit is R2/R1 when this ratio is small compared with the amplifier open-loop gain, and it’s called as inverting circuit. The value of input impedance is equal to R1. Bandwidth of this closed-loop is equal to the unity-gain frequency divided by one plus the closed-loop gain. Take […]

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High-Power Long-Life Compact Fluorescent Lamp / Tube lamp Controller

We can use UBA2021 for 600 V lamp controller and half-bridge driver IC for high-power. The UBA2021 is a long-life CFL/TL applications. It’s equipped with over-power protection to delivers constant light output and improves safety. A driver circuit for an external half-bridge, an oscillator, and a control circuit for starting, preheating, ignition, lamp burning, and protection are included. A demo […]

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