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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18 views

Can we use DC-DC Buck convert installed 3.8v battery to power Phone continuously?

I have a Windows tablet whose battery is dead and I want to convert it to without battery to use as a digital photo frame. Table dead battery is 3.8V Can I use DC-DC Buck convert (DC-DC converter ...
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26 views

RECOM Input/Output Filter Calculations

I am new to dc/dc converters and was hoping for some input from the community to see if I am on the right track. I two questions with the first being related to the data sheet EMI filters and the 2nd ...
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39 views

Convert Power Supply to 12V + 5V from Chassis Hot-Plug Power Supply [closed]

I'm trying to build a custom server chassis for an IoT testbed. We are gutting a Dell R710 PowerEdge chassis for the devices would prefer to use the existing power supply for logistical reasons. It ...
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2answers
42 views

AC to DC converter device (AC adapter) with adjustable output voltage and adjustable output current [closed]

Is there a device available in the market that can take an input AC from mains and convert it into DC and output it, the output current and voltage must be adjustable. I know there are AC adapters ...
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2answers
68 views

Misconceptions about layout of DC to DC step-down converters

I have noticed, in my opinion, some misconceptions in the layout of the majority of DC to DC step-down converters. I've seen in many PCBs that the trace that goes to the input of the converter (point ...
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45 views

How to ground external AC voltage (18V) to Arduino?

I have a project where I need to read 0-18 Volts AC in Arduino's input (0-5V DC). So I did a circuit with a diode (half wave bridge), voltage divider, and a RC circuit where I tested some values for ...
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1answer
75 views

AC converter, step up or step down, which is more efficient, which loses more energy? why can't support large power and being small [closed]

I want to buy a AC voltage converter for frequent international travel with some small appliances, and should support step up and down between 110V and 220V; found this one https://amzn.to/2voExKD is ...
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4answers
1k views

Half wave vs full wave rectifier [duplicate]

I know that a rectifier converts AC voltage into pulsating DC voltage. However, when would you use a half wave rectifier as opposed to a full wave rectifier ? Can you give an example of some ...
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87 views

Ways to multiplex the output of a DAC?

Part searching in microcontrollers, it looks like most small ones have at most one DAC. What is the just way or ways to output multiple slow signals from a microcontroller with at most a single DAC? ...
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82 views

Will this Arc Lighter Circuit Work?

I am attempting to build a really cool thing (at least I think). The goal is to build an arc lighter that I can shake to charge (kinetic power). It's a circuit that combines an arc lighter circuit ...
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1answer
59 views

How to control a boost converter by using pwm from Arduino [closed]

I am creating a simple boost converter that step up voltage in the range 5V-30V. The switch is a MOSFET controlled by PWM output of an Arduino (with additional necessary components.) I want to ...
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1answer
62 views

Which is best converter (FT232RL vs PL2303). Reson? [closed]

Please tell me about the main reason for using the FT232R IC compared to the PL2303 IC. Which is the best IC, and for what reason?
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105 views

Is this circuit correct?

I need to know if this circuit is efficient to transfer most of the current from several identical independent 2 phase dynamos. The converters are all the same and ideal for the voltages no problem ...
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49 views

Boost converter efficiency

I simulated a boost converter on LTspice and have measured the steady-state output power to be 80.49 W and the average power drawn out of the input source during steady-state operation of the ...
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19 views

TI DAC9881 Power-Up Sequencing

I am putting together a design with TI's DAC9881 and using an Arduino based setup to control it. http://www.ti.com/lit/ds/symlink/dac9881.pdf I want to run the design off of single supply (5V) and ...
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34 views

Step down converter stops regulating above 6V input

I'm currently using the following step down converter in a 4xAA battery powered design -> TPS62745 I have my Vselect pins configured as 3.3v out and using 4.7uH / 10uF combination on the output ...
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29 views

Component selection on the ZETA converter

I am absolutely beginner for power electrical engineering. I need a help. I have input, output voltage, load resistance, output voltage pulsation(percent), and inductor current pulsation. How to ...
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2answers
72 views

Trigger distant camera using 3.3V

I need to trigger a camera using a 3.3V signal, the camera is at the end of a 3 meter cable. This camera has two trigger inputs, a 3.3V GPIO input and an optocoupler input with max input of 30V. I ...
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35 views

Calculating the value of current-limiting reactor in single phase dual converter

I'm having a problem calculating the reactor's value in single phase dual converter. As you may know, the reactor shown in the picture below is to limit circulating current caused by the voltage ...
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1answer
42 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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1answer
71 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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108 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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67 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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52 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
93 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
68 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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1answer
41 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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38 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
62 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
155 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
122 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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249 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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33 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
60 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
91 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
70 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
64 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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159 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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82 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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227 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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190 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
817 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
50 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
81 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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85 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
152 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
149 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
94 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
128 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
60 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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