power electronics
|
Design Techniques for Reducing EMI in SMPS Circuits In my previous article on EMI, we examined how the intentional/unintentional nature of EMI sources and how they affect the performance of other Electrical/Electronic devices (victims) around them. The article was followed by another one on Electro Magnetic Compatibility (EMC) which provided insights into the dangers of EMI and offered some context to how poor EMI… |
|
Buck Boost Regulator using XL6009 with Adjustable 3.3V to 12V Output Voltage Buck-Boost regulator is made using two different topologies, as the name suggests, it consists of both buck and boost topology. We already know that Buck Regulator Topology provides a lower magnitude of output voltage than the input voltage, while a Boost Regulator Topology provides a higher magnitude of output voltage than the provided input voltage. We have already built a… |
|
PWM Inverter Circuit using TL494 An inverter is a circuit that converts Direct Current (DC) to Alternating Current (AC). A PWM inverter is a type of circuit that uses modified square waves to simulate the effects of Alternating Current (AC), which is suitable for powering most of your household appliances. I say most-of because there generally exist two types of inverters, the first type is the so-called a… |
|
Designing a True RMS to DC Converter using IC AD736 A True-RMS or TRMS is a type of converter which converts RMS value to equivalent DC value. Here in this tutorial, we will learn about true RMS to DC converter, how it works and how measurement methods can affect displayed results. What is RMS?RMS is the abbreviation of Root Mean Square. By definition, for alternating electric current, the RMS value… |
|
Switched Capacitor Voltage Converter A switched capacitor voltage converter performs energy transfer and voltage conversion using capacitors. There are mainly two types of switched capacitor voltage converters, first is the voltage inverter circuit and the second is the voltage doubler circuit. These types of circuits are commonly known as charge pump circuits. In this project, we will… |
|
Current Divider Circuits Explained with Formula and Practical Hardware When designing an electronic circuit, there are lots of situations when a circuit requires different values of voltage and current sources. For example, when setting the preset voltage for an Op-Amp, it is very common to use a potential divider circuit to obtain the required voltage values. But what if we need a specific value of current? Similar to the voltage divider,… |
|
Understanding Dot Convention in Transformers From large power stations to compact SMPS circuits, transformers can be found almost everywhere. Though there are many types of transformers and their exact working differs based on the application, the basic working of the Transformer remains the same. When examining transformer circuit schematics, you'll notice "dot" symbols placed on transformer windings. These dots… |
|
Design a Simple Constant Current Sink Circuit using Op-Amp Current Source and Current sink are two major terms used in electronics design, these two terms dictate how much current can leave or enter a terminal. For example, the sink and source current of a typical 8051 Microcontroller digital output pin is 1.6mA and 60uA respectively. Meaning the pin can deliver (source) up to 60uA when made High and can receive (sink) up to 1.6mA… |
|
Relaxation Oscillator using Op-amp An operational amplifier is an integral part of Electronics, and we previously learned about Op-amps in various op-amp-based circuits and also built many oscillator circuits using op-amps and other electronics components. An oscillator generally refers to the circuit which produces periodic and repetitive output, like a sine wave or square wave… |
|
Voltage to Frequency Converter using AD654 A voltage-to-frequency converter (VFC) is an oscillator that outputs a square-wave, whose frequency is linearly proportional to its input voltage. The output square wave can be directly fed to a digital pin of a microcontroller to accurately measure the DC input voltage, which means the input voltage can be measured using 8051 or any other microcontroller which does not have… |
|
Design a Voltage Controlled Current Source Circuit using Op-Amp In a voltage-controlled current source circuit, as the name implies, a small amount of voltage across the input will proportionally control the current flow across the output loads. This current source circuit using an op amp is commonly used in electronics to drive current-controlled devices like BJT, SCR, etc. We know that in a BJT, the current flowing through the base of… |
|
Different Types of Wireless Power Transfer Technologies and their Working Every electronic system or device needs electric power to operate, whether it is from your walled AC supply or a battery. This electric power cannot be stored infinitely in any rechargeable device like batteries, condensers or Supercapacitors. So any portable devices like laptops or mobile phones are needed to be connected to AC power lines to recharge their batteries… |
