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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3answers
396 views

high current buck converter?

I am in the process of building a power bank with 18650 batteries for a trolling motor. The nominal voltage for this battery is 14.8 V. The motor specs are 12 VDC - 45 A max current draw. Now the ...
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6answers
452 views

Why can't my 555-based DC-DC boost converter supply even 3 milliamps at 12V?

I hope someone can help me. I've been tearing my hair out for the past couple of weeks trying to make a simple DC-DC boost circuit. It puts out a nice 12-ish volts when not loaded, but as soon as I ...
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2answers
128 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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111 views

Maximizing efficiency in synchronous boost converter

simulate this circuit – Schematic created using CircuitLab The aim is to design a synchronous boost converter using a microcontroller ATMega 2560 switching at 31.25 kHz. 5V PWM signal is fed ...
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2answers
99 views

Connecting a medium sized 1 kVA Inverter with a 2 kVA Generator

I have a 1 kVA inverter which is using a 12 V battery to generate 220 V AC (battery is connected to a charge controller and is being charged by a PV). In addition I've got a 2 kVA generator. ...
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1answer
50 views

SENT (Single edge nibble transmission) signal to analog signal conversion

I'm currently getting a SENT signal output feedback(IC MLX90367 used in the simple actuator) from an actuator. For closed loop control, I have to feed this signal back to the motor controller. ...
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31 views

Flyback converter compensation

Can a change in rectifier diode of secondary winding of a flyback converter affect your compensation?
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2answers
192 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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1answer
99 views

Convert linear voltage to PWM

I'm trying to convert a linear voltage to a 21kHz PWM signal using passive and active components. Do you have any idea how I can achieve this ? I tought about comparing my linear voltage to a ...
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1answer
47 views

Have I burned out my HD motor? [closed]

I accidentally cross connected my external HD and my computer power cables. Only noticed it when my computer complained it was not charging. MY HDD is no working but I have had problems with it ...
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1answer
70 views

Why do I get this waveform at the output after power down of Buck Converter

I am having a buck converter which steps down 8-16V input to 5V output. Load current = 0.6A But upon removing the input power, I get the attached waveform. My schematic circuit is similar to the one ...
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2answers
3k 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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1answer
160 views

Difference between MAX3430 and ADM483 for TTL-RS485 Converter

I want to use TTL-RS485 Circuit as in the attachment. The circuit is working when I use ADM483 Transceiver for U1. It can provide communication. However the circuit is not working when I use MAX3430 ...
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55 views

DC/DC Buck Converter PCB Layout Help

Most examples I find are for buck converters on a PCB of their own with massive traces. I want to make sure this layout is fine with the planes I'm using(both top and bottom copper pour layers are GND)...
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1answer
106 views

Digital to Analog (DAC) design with MOS transistors

I am looking for a DAC design wıth NMOS and PMOS transistors as a part of a project, most of the DAC circuits that I found were builted with R-2R or with capacitors. But I need a design with MOS ...
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2answers
113 views

Sawtooth signal

I'm trying to create a sawtooth signal using low cost pasive and active components. This will allow me to compare it to an analog signal to output a PWM signal. My sawtooth signal have to be at least ...
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2answers
70 views

LM3478 48V boost converter

LM3478 datasheet This circuit was designed with the help of Ti webench, I have checked all the connections, everything checks out. When i connect a 24V 2.2A Dc supply the supply voltage drops to 3V ...
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3answers
54 views

My push-pull converter uses a flyback transformer with an air gap. How does changing air gap size affect the secondary output voltage?

My push-pull converter circuit uses a flyback transformer with an air gap. If that air gap is changed (increased), the primary inductance is decreased. How should I expect the secondary voltage and ...
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1answer
39 views

Can the ADS1118 ADC converter accurately read a voltage close to GND?

1. About the ADS1118 ADC converter I'm using the ADS1118 ADC converter from Texas instruments to measure a voltage. You can find the datasheet here: http://www.ti....
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28 views

logic mosfets driving irfz44n

iam building a mppt solar charge controller.iam using parts from an electronics scrapyard.i have drawn a schematic with the available parts in easyeda site(attached).resistor and capacitor values are ...
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0answers
54 views

1.5 bit pipeline ADC

How do we combine bits obtained from different stages of 1.5 bit pipeline ADC. Can it be generalised for k bit pipeline ADC ? each stage has three region - 00 , 01 ,11 in 1.5 bit pipeline adc
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0answers
41 views

Voltage step up module and if I am using it correctly

I am making a "simple" bluetooth speaker and have followed instructions from a Youtube video on how to assemble the components I have bought. However... I am finding that the rechargeable li-po ...
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1answer
149 views

Powering 9216 leds @5V, @24V with converters

I am struggling with a power supply question. I would like to power up and control 9216 LEDs -- strips of 144 LEDs/meter (WWA SK6812 - just like the RGB kind). These are powered at 5V and draw 43.2 ...
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2answers
66 views

If an inductor is in series with each of the upper and lower MOSFETs of a half-bridge, will the switches experience zero current turn on?

simulate this circuit – Schematic created using CircuitLab I am imagining of a half-bridge converter feeding a normal resistive load. In series with each of its switches is an inductor. ...
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1answer
42 views

How to safely wire power supply

I plan to use a small 220v to 5v buck converter I bought, to power a Wemos D1 mini from 220v mains power. I am not sure how to safely hook it up to the mains power. It seems that because the system ...
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1answer
61 views

Boost converter: doubts on signs voltages

Please, if you could explain me why on step-up (boost) converter the sign of the t-off voltage part is positive in the following equation: Vd * tOn + (Vd - Vo) * tOff = 0 I thought that the ...
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1answer
446 views

Buck converter design problem/confusion

I have problem with designing buck converter. I have tried to design it by using instructions from this site: Buck converter And here are my parameters: V input - 72V max V output - 12 V ...
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1answer
42 views

Is it convenient to use a buck converter on a RS-422 communication board?

I am working on a PCB design with STM32 MCU. On the PCB there will be 2 MAX490 transceivers and one bluetooth module. Communication speed will be 921.6 Kbit/s for all communication elements. ...
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3answers
308 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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39 views

3V to 20V DC - DC boost converter help

I am sorry if this question has been asked before, I couldn't find exactly what I'm looking for. TL, DR: I'm looking for a way to boost 3V to 20V that: Works from a single cell lithium ion battery ...
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3answers
107 views

Can a Variable Frequency Drive convert standard wall outlet (120V/15A/single phase) to ~220V 3 phase?

In my workshop I have a device that requires 220V 3 phase power, with a requirement of up to 1.5kVA. In North America, my wall outlet provides ~120V/15A single phases. (EDIT - my device can take +/- ...
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2answers
348 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 ...
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50 views

Simulation issues in Buck converter design

I'm trying to understand Buck Converters by designing & simulating a circuit in www.Falstad.com circuit simulation tool. Here is the link to the circuit that I've Designed. link to circuit ...
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2answers
140 views

Calculating the peak current of my boost converter

I am stuck while calculating the peak current in the boost converter through the inductor. Can you please check if I am right? Ipeak=(Max Voltage/ R2) = 18/1000=0.018. So, my peak current through ...
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0answers
135 views

ADC conversion value spike during ADC conversion

Description of the situation I am trying to get an analog vibration sensor signal to a Raspberry Pi 3 B+. To convert the analog signal to digital values, I'm using Waveshare High-Precision AD/DA ...
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3answers
128 views

Buck converter input current

How to calculate the input current consumption of the buck converter. It's seem that the output current only depends on the output voltage, duty cycles, input voltage, and coil inductance. Does the ...
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52 views

220 volt ac to 12 v dc converter without voltage regulator

I want to design Additional RC Filter. My input is 220V AC and I want to observe 12 V DC output. I am designing 100 Hz with a full-wave bridge rectifier. My question how can I find the output of ...
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1answer
77 views

RC Frequency to Voltage Converter

I'm an electronics engineering student and I want to state that this question is not my homework, it is a tiny part of my project (PWM encoder) but I couldn't pass it. I'm trying to make a "frequency ...
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1answer
81 views

Buck step down convertor uses a lot of current? [closed]

I have a DC-DC buck step down converter module LM2596 voltage regulator set to supply 3.0 volts to an atomic clock using a 8 Ah 12 V battery. The clock normally uses 2 AA batteries. https://www.ebay....
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2answers
344 views

LM2596s-Adj dc to dc buck converter

Does the schottky diode current rating affect the performance of a dc to dc buck converter when loaded? Im using a 1N5822 shottky type instead of a 1N5825 on a National Semiconductor LM2596s-Adj based ...
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60 views

How to change frequency range of this circuit

I need to design a frequency to voltage converter and I found this circuit on internet: I removed the resistor R6 and the capacitor C5 because what I need is the PWM output it gives on the 555 timer. ...
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37 views

Transformer primary winding splitting

UCC2863x, High-Power Flyback Controller with Primary-Side Regulation and Peak-Power Mode In a design of a fly back converter the transformer used has 3 windings i.e. primary 328 μH and ...
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1answer
5k views

RGBHV (VGA) to YPbPr Converter and Waveforms?

Purely for hobby, I am working on an RGBHV (VGA) to YPbPr (Component) converter circuit for old games consoles modified to output RGBHV on a VGA cable. From the game consoles, the RGB signal is taken ...
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2answers
115 views

What is the reason of undesired peak current in PFC non-isolated boost converter?

I have attached inductor current waveform of PFC boost converter. After the particular current level, an undesired peak is coming. I have done some study and thinking it might be because of inductor ...
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1answer
65 views

Driving 12v logic from an MCU

I'm looking to drive 12v logic signals (logic level shift) from a PIC24FJ MCU, which can do 3.3v and 5v logic. In one instance, I need to switch a 12v line to LOW, and in an other, I need to provide a ...
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1answer
123 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
50 views

Successive approximation conversion

Can someone explain me from the following table on how to get the DAC output.
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0answers
101 views

How can I change a DC current to a 1.7/2.4 MHz AC current for piezoelectric device

I would like to start by saying my experience in electronics is very limited and I will include pictures of everything. I am, however, trying to assemble a device which puts a current through a ...
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2answers
299 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 ...