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Questions tagged [converter]

A circuit that converts a signal from one form to another. Analog to digital, Digital to analog, Voltage to current, Current to voltage etc. The key to understanding is the transformational properties of the circuit as opposed to just amplification or buffering.

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12V Converter for li ion battery pack supporting 16-20 Amps

I built a 4S Li ion battery pack and I need 12V output at 16-20Amps but I have limited space (70mmx55mm). 12 V would be the best but I could also just reduce the max output from 16.8V (4x4.2V) to ...
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2answers
66 views

RS232 Bridge cable stopping after some time

Im trying to reverse engineer a very old DOS program that connects with a machine using RS232, for this i setup a typical in the middle connection like this: From Computer A to PC A connection im ...
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1answer
39 views

Basic Buck Converter Switching Mosfet

According my book, which I think it might be an error, Q1 is a D-MOSFET, and the behavior of the circuit is shown in the following picture. But it seems to me that according to the behavior this ...
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1answer
110 views

Question about RC square wave converters

I was trying to make a square wave to triangle or sine wave converter circuit, and it seemed to work, the problem is that I think there's a problem when you want to use it for something that requires ...
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2answers
109 views

Is it possible to speed up Battery simulations with power converters in Simulink?

I am facing a huge problem with real-time analysis of a PCS simulation. I want to simulate a power converter system, which can be used as a power converter. I have to do an accelerated simulation with ...
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1answer
119 views

Inductor and Capacitor for Bidirectional DC-DC Converter with Battery

I have to design a bidirectional converter to regulate a DC bus at 250 V with a battery bank at 144 V. My question is how to do it optimally, because I do not know the maximum ripple allowed in the ...
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1answer
105 views

120v AC to 220v AC converter, most cost effective way

I bought a vintage russian tube clock on ebay, it expects 220v AC. What is the best solution I can build myself? With the intention of installing in the case and soldering connections to. I am also ...
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2answers
149 views

Buck Converter 24V 12A

I'm trying to make a buck converter that should carry a load of up to 12A. Probably no surprise, the n-channel mosfet is getting hot quick, even with a heatsink it is getting to hot. (I have currently ...
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1answer
152 views

flyback converter issue

When loading flyback converter with heavy load, waveforms are as expected. But with light load, waveforms are not as expected. What can be the reason ? Duty cycle is less than 50% so no slope ...
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2answers
346 views

Why fuse blows in this circuit?

simulate this circuit – Schematic created using CircuitLab Hi, I am trying to build a 5VDC from my 220VAC (Switched-mode power supply). The first step is to convert AC-DC. Above is my ...
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59 views

How to get uni polar sinusoidal wave from buck converter?

I am trying to build a pure sine wave inverter by using a buck converter cascaded with a square inverter. My hope is that I can vary the duty cycle in such a fashion so as to reach a fully rectified ...
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60 views

Struggling to figure out why this capacitor voltage is huge

As you can see in this image from simulations on Matlab-Simulink: I'm tracking the blue signal (reference current) using this circuit Which is in this 400 kV HVDC link as "Snubber". So basically ...
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1answer
2k views

What is Namur how does it work?

I found a TTL converter box made custom made many years ago. It says Namur_to_TTL converter on it. What is Namur? I googled but couldn't find a clear explanation.
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3answers
495 views

How synchronous buck converters continue to operate in light load conditions

simulate this circuit – Schematic created using CircuitLab For all intents and purposes lets assume this basic power stage of a synchronous buck design above. Let's also assume a steady state ...
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2answers
93 views

boost converter control technique

Is it possible to design a high power wide input supply range boost converter which has to be compatible with single phase as well as three phase power supply? and if it is possible then which analog ...
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1answer
397 views

Do I need to protect buck converter when switching to alternate power source?

Noob question here; please pardon my ignorance. I am trying to power some 12v devices, (e.g. Peltier cooling device and fan ~4A), optionally from one of two power sources: 12v DC In DROK Waterproof ...
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1answer
92 views

What does PA1 do in this schematic?

Original document:http://www.st.com/content/ccc/resource/technical/document/data_brief/group0/95/79/2a/ed/d0/a0/4f/46/DM00263698/files/DM00263698.pdf/jcr:content/translations/en.DM00263698.pdf The ...
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3answers
293 views

Do EVs with a DC motor require an inverter and/or/nor a converter between the battery?

I'm somewhat familiar with Tesla's electric vehicles and that they use AC motors, but I'm completely unfamiliar with EVs that use DC motors. I know that in a Tesla an inverter is required to convert ...
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121 views

Why if I change the sample time in Matlab/Simulink modifies results in a huge way?

I'm having trouble with the circuit I'm studying but in order to modify some values, I want to get out this question of my mind. * Example 50e-6 * Example 50e-7 * Example 50e-8 I use a S-Function ...
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4answers
651 views

how to get 4-20mA output

i test the below circuit using with LM358. and i use instead of n-MOSFET i use CL100 transistor and for p-MOSFET i use CK100. in my 4-20mA converter circuit for 1.1 v input i get 31mA and for 4.4v ...
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2answers
285 views

Can you place two boost converters in series to boost 3v to 180v?

I am looking to build a power supply for a NIXIE tube. They need to output 180v at 4ma but will run off of a 3v lithium battery. The battery can take the current requirements for the input, but at the ...
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1answer
34 views

Issue with step-down converter feedback and where to place it

so I figured out where the buzzing is coming from in my circuit, and I think I'm starting to see the problem with it. Here is a schematic I have: The DC/DC step down converter I'm using: http://www....
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1answer
98 views

Are the transformers used in switching flyback converters regular transformers? [duplicate]

When trying to use the turns ratio to assist in the voltage conversion I found current transformers to have the greatest range in N, up to 1:500. Is a current transformer suitable for a flyback ...
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3answers
359 views

How can i design a current follower that can copy current without affecting the circuit current?

I want to design a circuit which will copy a current from another circuit without affecting that circuit current. An input circuit there is some current through a resistor or path I want to follow ...
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1answer
108 views

How a current buffers works, I want to make (1-5)V to (4-20)mA V-I converter, how can I make this circuit load independent?

I want to make a 1-5V to 4-20mA Voltage to Current convereter. I choose this circuit. The circuit is working for only 250ohm load the conversion ratio is 4. But I want to make this circuit load ...
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2answers
167 views

Flyback simulation - not regulating at lower load

So I've been trying to simulate a flyback converter with the full load condition of 10v, 10A (100W) at the output at fs = 80kHz. The design equations I used were from "Pulse-Width Modulated DC-DC ...
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2answers
348 views

How to fast charge capacitor 2200uF/400v in fewer seconds?

I have a problem to charge a capacitor 2200uF/400v. It takes 30 second to reach 300v. I hope can reach 300v in 10 seconds. thanks :) This my schematic: ![the capacitor its on output (cn2) i use ...
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2answers
92 views

Neutral Point Diode Clamped Inverter Switching States

Can someone explain to me the 3 main switching states of the following inverter? I understand the +Vd/2 and 0 output states but I do not understand how there is a (-)VD/2 state unless it has to do ...
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1answer
59 views

Calculating power supply current output

I have a 15V power supply powering 2 Dc/dc converters that are the same. The converters are connected so that the outputs are 10V and -10V (the - terminal of the 10V converter is tied to the + ...
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25 views

Power electronics problem: battery charger

Given the next circuit, I have to charge the battery of 12V with the one of 48V with a power transfer of 480W. simulate this circuit – Schematic created using CircuitLab Since inductors don't ...
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1answer
141 views

10 volt ac to 10 volt dc

I have 10 volt ac that I get from transfo that I wanna convert to 10 volt DC, what is the circuit to achieve that ? diode bridge, capacitors and regulator I guess ? is it the best to use a zener ...
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2answers
121 views

build or buy buck converter

Hi I am looking to step down a 10 volt DC to 5 DC with low output current (less then 1 amp) Is it the best to build a buck converter or to buy it ready ? thank you Actually I am using an arduino, I ...
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1answer
144 views

Volts to decibels using microphone's transfer function

I'm attempting to convert a voltage signal originating from a microphone to decibels. However, I do not have the "microphone sensitivity" in terms of dBV/Pa which is used in this previous conversion. ...
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64 views

Help in identifying two parts

I need to identify two parts that I need to replace, but I'm having a hard time doing it. These are the parts: Part 1: From my research I think it is a trigger switch (http://www.jiaben.com/en/pro....
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4answers
1k views

In digital systems do we discretize both time and magnitude or only time?

In studies of Digital Circuits or Digital Electronics or Digital Systems, the very first step is to convert an Analog signal / Analog system into a Digital Signal / System. In this process of ...
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3answers
4k views

Explain the logic of a 12 V to 9 V conversion

How does the below circuit work? I know what resistors, capacitors, and transistors do and have played with them on a microcontroller board, but am I trying to understand the logic of the circuit. I ...
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3answers
365 views

Digital counter with analog output

I have a process that produces a digital pulse train from a rotary encoder. I need to be able to stop the process once a stepper motor has moved a given distance. The trick is, I need to manually set ...
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1answer
410 views

Use RS232 - RS422 Converter with Encoder

Problem I am trying to communicate an incremental encoder (TTL/422) with a PC, however, the PC is modern (correct me if I am wrong, It is a Sabertooth Z77) and doesn't have parallel ports... I found ...
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1answer
65 views

Boost converter is acting as a capacitor

I've just bought two Xl6009 Boost converters and both are showing the same problem. When I connect a power source to the input terminals and tried to measure their output it shows 1 on the left side ...
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1answer
58 views

What converter to use?

I am going to build a stage box, and I need 5V for that (to add some logic, maybe even later an STM32). I also need mains (220V) for a 12W RGBW LED PAR light. At first I thought to put in the box a '...
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1answer
80 views

Help me out with DC - AC inverts! [closed]

so ive got quite a bit of questions about these DC - AC converters, so ive got an inverter wich converts 9V DC alcaline battery to around 240V AC output, my questions are, is this circuit realy ...
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3answers
511 views

Decimal to Binary [closed]

So I've been looking all over the internet for a Decimal to Binary converter but all I've been able to find are Binary to Decimal converters, and Decimal to BCD circuits, does anyone have one?
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2answers
290 views

Boost converter using TL5001

I am having a circuit for a TL5001 boost converter that outputs approximately 400 Volts. I am trying to modify the circuit as to output a voltage between 20V- 100V. The output current will be less ...
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1answer
205 views

DC-DC conversion with homemade transformer [closed]

We are a group of student who are working on a project, where we want to develop an alternative type of power supply. First some quick information about our project: We want to sent 12V DC from a ...
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2answers
186 views

How does electric current work? [closed]

I am so confused about this ampere thing. Here are my questions. 1.A DC battery can deliver any amount of electric current we want(Before the battery burns out).For example, an led with 5 ...
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1answer
70 views

Sound to electrical energy converter (Energy Harvesing) [duplicate]

Is it possible harvest sound and convert it into a usable electrical energy Ex. You want to charge your phone using sound energy
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91 views

Converting BCD Truth Table to Output Functions Using K-Maps

To be honest, I'm just looking to see if I'm on the right track with a certain question. This here would be my answer for the K-Map for the "H" output function and im just curious if im on the right ...
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0answers
96 views

Values for capacitor, inductor etc. buck converter

I'm trying to make a buck converter in Multisim. What values should i sign for L1, C2,R1 to get 12V output from 15V input with 1A Iout and a frequency of 20kHz?
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1answer
2k views

Line Commutated Inverter

This is the circuit diagram for a Line Commutated Inverter which I came across in my power electronics book. The input and output voltage waveforms are give below: My logic says that from π to 2π,...
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2answers
338 views

How can I use half-wave rectified 120VAC to activate a PLC input?

I am working with a CLICK PLC with the C0-08NA 120VAC input module. According to the documentation, the C0-08NA's equivalent input circuit looks like this: A device I need to interface with is ...