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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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1answer
24 views

What factors do I need to consider when selecting an inductor to use in a circuit with the MT3608?

I am trying to use the MT3608 chip to boost the power output of a 3.7V lipo battery from 3.7V to 5V, which will ultimately power an ATMEGA32U4 chip. Below is a picture of my circuit where I have ...
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26 views

Designing transformer for uc3842 offline flyback power supply

I need help on how to calculate turns in flyback transformer for the above mentioned power supply. Now I know about designing Half bridge, full bridge and forward converters but I am unable to figure ...
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1answer
66 views

How to implement a transformer into a boost converter instead of an inductor

I am trying to build a boost converter that would output a high DC voltage (several hundreds). My concern is that I should use a transformer, but how should I implement it so that DC voltage input is ...
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0answers
75 views

Inconsistent Output Voltage in DC-DC Buck Converter

I'm trying to implement the following tps54302 DC-DC buck converter, for a 5V 3A output: All resistor values 1% tolerance, capacitors 5% tolerance, inductor 20% tolerance. I'm testing with a bench ...
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14 views

designing Step Up Converter G5177 for battery project

I need to use the typical design offered in the datasheet of the G5177c Designing Step Up Converter for a mini battery-powered project. I bought a PCB with the circuit already built, but I would like ...
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45 views

Using schottky diode near reverse breakdown region

I am currently using a 1N7070 schottky diode as the output rectifier for a flyback converter. The designed reverse blocking voltage is 70V. However, due to leakage elements I am seeing a transient ...
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4answers
91 views

Switching and non-switching period in buck converter

I am using TPS54260 buck converter to step down 10V to 3.3V. Load = 1A. While measuring the output voltage and switching frequency using oscilloscope, I am observing this: During no load condition ...
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1answer
57 views

Fly back converter- No output voltage at secondary winding

IC controller datasheet From my preliminary examination, I found that the VDD is fluctuating from 12 to 5v, My inference from the datasheet is that the High voltage current source is helping till it ...
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0answers
49 views

CC/CV buck converter with a micro controller

I am using a arduino to fire the mosfet at 62.5KHz and the feedback pin will go to the analog input of arduino I found this schematic on ti page saying "discrete implementation of a CC/CV converter" ...
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1answer
35 views

Video stream over RF and converting to Wifi

So, here is the scenario: I have to put a camera far away from my wifi internet hub and want to see the video on my cell phone. I know that I can put Wifi repeaters, but it's not a feasible solution. ...
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0answers
37 views

Is there an adjustable voltage converter that could take an input of 18 volts to a 0-18v and handle an amp draw of 20 to 30 amps? [closed]

Trying to change a power tool from a 9.6 v 3.3 ah nimh battery to an 18v 5 ah lithium Milwaukee battery
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1answer
57 views

What is the effect of doubling the airgap in a flyback converter?

If I understand correctly it would flatten the hysteresis curve. So it would allow to store more energy and it would also decrease the permeability of the core. Would it have another effect or will ...
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2answers
99 views

Self-oscillating converter circuit

I need some help with understanding following DC-DC converter circuit: (Just for clarification, the three windings are on the same transformer core) simulate this circuit – Schematic created ...
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1answer
76 views

Analog exponential convert for MFOS VCO

I'm trying to understand the exponential converter in the MFOS VCO. Here is a link to the complete MFOS Noise Box synth schematic. http://musicfromouterspace.com/analogsynth_new/NOISETOASTER/...
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2answers
98 views

220V to 12V converter

I need to convert 220 V AC to 12 V DC in my circuit that can provide minimum 100 mA at 12 V DC. It should always be on 24 hours a day and 7 days a week. I don't want to use a transformer because my ...
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29 views

How do I get a lower/higher voltage from a cuk converter?

By definition, "The Ćuk converter is a type of DC/DC converter that has an output voltage magnitude that is either greater than or less than the input voltage magnitude" So I was wondering how I can ...
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2answers
55 views

DC/DC: Analog --> PWM 12V [closed]

I'm looking for an IC that can convert an analog signal to a PWM signal, i.e.: Ui = 0V --> DC = 0% Ui = 6V --> DC = 50% Ui = 12V--> DC = 100% Anyone who knows an IC for this? Thank you
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1answer
90 views

Sine to square on complex wave?

What are the required parts on a circuit to get a square wave out of a sine one following the constraint shown in the image? Schmitt triggers seem to work on continuous sine wave but as you can see, ...
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1answer
65 views

Bi-Directional Logic Level Converter

I want to create a logic converter to communicate an ATtiny85 (trinket 5V) with my raspberry-pi. I am currently following this guide. I want to use a written program for ATtiny that only generates a ...
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1answer
47 views

Boost Converter Design Formulas

I have a boost converter. Vin=10-16V Vout =23V Iload=250mA. Fsw=125kHz NCV3063 I have a Boost converter App note from TI. Boost Converter TI App note I tried to design my boost converter circuit ...
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1answer
128 views

What is Pass Transistor?

What is pass transistor?. How does it work?. while reading about the DC-DC converter, I came across Pass Transistor.
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1answer
63 views

Is there a problem using electrolytic (polarized) capacitor as coupling capacitor in SEPIC converter?

I found this circuit from here and have been thinking about to build it: The author present it as Ćuk converter but I understand it as SEPIC, after reading this and this. Q: My main concern is, ...
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4answers
138 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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1answer
93 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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6answers
589 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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1answer
48 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 ...
2
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1answer
72 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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65 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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2answers
125 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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1answer
111 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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3answers
68 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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2answers
88 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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1answer
44 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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33 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
58 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
42 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 ...
2
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2answers
67 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
43 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 ...
2
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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
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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0answers
59 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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0answers
57 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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3answers
147 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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0answers
182 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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0answers
85 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
82 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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68 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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0answers
53 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 ...
3
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1answer
91 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
66 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 ...