Questions tagged [step-up]

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48 views

How to bypass step-up voltage converter?

I bought this great solar panel unit on amazon that has lithium batteries, 12v input and 12v output. I use it to power a 5v ESP8266 and I have a step down voltage converter from 12v to 5v on my end ...
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0answers
46 views

Single brushed DC motor driver not working when using step up voltage regulator

I'm using this Pololu single brushed drive to control a DC motor. Its voltage working range is from 4.5 to 28V and it works fine when I supply it with two 18650 batteries in series. I want to make it ...
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2answers
44 views

Does boosting voltage using MT3608 from 3.7V to 10V module reduces the Lipo battery capacity?

Suppose say, Iam trying to boost the voltage of my 3.7 Lipo battery to 10V using MT3608 STEUP UP CONVERTER and I need to run 3 LEDs(connected in series) which takes 9V (3v for each LED) If my LIPO ...
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1answer
66 views

Is it safe to use a 120V/60Hz rated espresso machine on a 100V/50Hz grid?

I'm new here and my question is a bit complicated with multiple factors, so please allow me to explain it. I live in Eastern Japan where 100V/50Hz is standard. I intend to use a very expensive 1800W ...
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2answers
34 views

Step-up transformers with varying voltage outputs in parallel on single line?

Just curious if this is possible. I also know this is very simplistic. Say I have an AC generator that outputs 24V. I have three separate devices that each require a different, increased voltage to ...
2
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1answer
70 views

Generating +65 V (positive) and -65 V (negative) voltages from two 12 V batteries using cheap step-up converters?

I need to power a 300 W class D amplifier with positive and negative 65 V. As I'm a do-it-yourself guy, I didn't know about positive and negative voltage and ordered a bunch of these normal step-up ...
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0answers
53 views

ATX power supply turns off when used with DIY boost converter

I am trying to build my own step-up boost converter. I have my connections as shown in the following schematic (except for the one circled in red.) First I powered up my step-up module with a ...
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0answers
25 views

Constant Voltage Power Supply

I’m working on a project were I need to power to some 24V 4-20mA sensors, a 3.3V ESP32 and a 5V SIM808 module. To accomplish this I’m using a step-down buck converter to reduce a 12V electrolytic ...
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2answers
36 views

Can I use LM3481 for a system where no-load status can occur?

I have made a step motor driver board with LM3478 to supply 24v from 12v input. LM3478 The problem is that a user can power the board without the stepper connected board which drive the board to no-...
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0answers
32 views

Open a MOSFET with a step-up converter

Hello smart people of the internet. Please help me to solve a puzzle. I'm pretty sure there is something simple I'm missing. So here is what I have: I have a 2.2v battery that I want to discharge via ...
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0answers
56 views

what is maximum Input voltage for 2s bms

I am making UPS for my 12v broadband router. I am planing to use XL6009 boots converter to booter 8.4 volt to 12v. For charging 2s Li-ion battery with 2s BMS i don't have 8.4v charger. Can I use 12V ...
0
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1answer
52 views

Can we use 3.3 to 5 voltage logic level converter to drive a sensor?

I have a question that can we use 3.3V to 5V voltage logic level converter to drive a sensor which works on 5V as input voltage? Can we supply that 5V as input voltage to sensor or is there any ready-...
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0answers
41 views

DIY 3 V -16 V, 300 watt boost converter for ultracapacitors

I am trying to build a power supply for a portable Tesla coil project using 6 × 3000 farad supercapacitors in series (16.2 V @ 500 F). I am trying to maximize the usability of the supercapacitor ...
1
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2answers
31 views

Nominal Voltage with 18650 cells and DC-DC step up board

So I'm building a simple 12v router UPS and I have trouble with one concept - Nominal Voltage. So the build is very simple, some common 18650 cells, DC-DC voltage step up board, and a BMS (battery ...
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2answers
85 views

Relocation US to Germany: step-down transformer for TV, AVR, LED lights and other devices? [closed]

I hope this is the right place to ask this: I am relocating from the US (110V 60Hz) to Germany (240V 50Hz) and want to bring some of my electronic devices. It seems worth the hassle in my case (not ...
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1answer
67 views

Step-up layout - Is important trace order?

I am adding step-up to my PCB and I wonder if I have to make trace order like in this design. I mean if input voltage has to go first through power inductor, then capacitor and finally step-up ...
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0answers
30 views

Check my battery powered layout

Few days ago I had topic about issue with power inductor crashing circuit. I almost resolved issue without making new by 90%. However sometimes circuit crashes -> I did some updates based on replies. ...
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1answer
69 views

Battery powered step-up converter not gives enough amps

I am creating two part PCB running on Li-ion battery 26650 (3C discharge rating, max capacity 5000mAh) powering few LED strips with controller. PCB 1 (schema 1) has step-up converter MT3608 which ...
0
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1answer
50 views

Safely powering Dell laptop from external Li-ion battery with a 11.1V/19.5V step-up converter

I need to build a power-bank type device for my Dell Latitude 6530 laptop (19.5V, 90W nominal power input). I have 12 Li-ion 3.7V, 3.35Ah (18650-type) cells, 3S4P configuration (11.1V total output). ...
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1answer
77 views

How to identify a low voltage transformer

Not 100% sure this is the correct forum for this question. If not, I apologise. I am trying to identify this transformer. It comes out of a Paradigm PDR-10 subwoofer amp. I believe it is bad as ...
1
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1answer
43 views

5v adaptor to 6v 6.4w UPDATED

I have a lot of 5v 400mah to 2a adaptors laying around. Is it possible to use this on an old camera with input 6v 6.4w? The battery is out of the camera and the power would only go thru the camera ...
1
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1answer
51 views

Finding the optimal voltage for a sealed transformer

I stumbled across a sealed transformer (step-up) which i believe came out of a neon power supply. Its completely covered in epoxy like goop and the internals cannot be seen. However,on the tin it ...
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2answers
43 views

Subtleties of Boost Conver (Step-up Converter)

simulate this circuit – Schematic created using CircuitLab Generally Boost Converter fault happens in my workplace and difficult to find the problem of converter. So I try to understand the ...
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2answers
76 views

Stepping up from 12vdc to 100vdc/-100vdc

I am looking to power a phone ringer circuit that requires +100 V DC and a -100 V DC. I have found a circuit here but this converts it to 120 V DC with a transformer. Is it possible to get +/-100 V DC ...
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1answer
313 views

MT3608 Improper Output Voltage

SITUATION Hello All, I have designed a PCB the using a MT3608 to produce 5V from an 18650 Li-Ion battery. This is my second revision of the PCB (the first one worked fine), however this one has ...
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0answers
50 views

How to control output voltage of DC to DC Step Up Fly Back?

I need to control the output voltage of Isolated Flyback Step-Up power supply using an MCU may be using DAC or PWM or via a digital pot, how to do this? spec Vin 5V - 8V Iout 40mA Vout max 100V ...
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0answers
38 views

Feeding grid transformers via secondary, primary disconnected

I am interested in how transformers are used in the electrical grid, with a view of one day building an isolated "microgrid" for educational purposes. I am however having some difficulty getting some ...
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1answer
87 views

How to make a DC to DC step up with multiple isolated outputs? [closed]

I want to design a DC to DC step converter with multiple isolated outputs. I need ten outputs (isolated) positive and GND. Vin: 8 V DC from LiPo battery. Number of isolated outputs: 10 Vout: 50 V, 10 ...
0
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2answers
61 views

Simple Square Wave Amplification Technique?

I have a square wave that is 5v peak-to-peak. I need a circuit that can amplify this square wave up to any given supply voltage between 9 and 50v. I don't need much current, nothing more than 100ma ...
0
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2answers
58 views

What is the importance of dc-dc booster efficiency?

I am going through Texas instrument web bench design suit and get 40% efficiency for some booster circuits if booster can handle the load (Vout and Iout) according to design given by TI what is the ...
0
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1answer
61 views

Is it possible to provide DAC voltage to VOUT_ADJ to control Vout?

I am using a TPS61391 booster. I need to adjust Vout via a DAC connected to FB pin voltage divider (VOUT_ADJ). is this possible? DAC voltage varies from 0 to 3.3V.
2
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1answer
166 views

Simple, compact 9V DC to 400V DC step up

I'm attempting to create my own Geiger-Muller counter based on an old, soviet STS-5 tube. I want it to be as compact as possible. I don't want to use ready-made modules, like this one, instead I ...
0
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1answer
87 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 ...
0
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2answers
79 views

how to demux 100V to 300V DC signal into 8 channels?

I need to 8 channels of 100Vdc to 300vdc, load current 10mA to 80mA. my idea is to use a step transformer to step up dc 5v 1A source to 300Vdc 50mA (typical application). low voltage side of the ...
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3answers
120 views

Can a cheap transformer be used for twice the rated voltage?

Can a step up transformer designed to step up from 110v to 220v be used to step up from 230v to 460v? (I'm thinking one of those cheap Chinese auto transformers from ebay, in the 1kva-2kva range) I ...
0
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1answer
107 views

Will my step-up converter module burn if I connect a power hungry device to it?

I recently bought a step-up converter module. It is rated to work at 24 volts and output MAX 28 volts and 2 amps. I will connect it to a source that outputs 5 volts and 20 amps. If I connect a power ...
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1answer
76 views

Power a guitar pedal (usually takes 9V power) with a single AA battery

This is not necessarily for real life application, but more for the challenge: would it be possible to power an existing guitar pedal (let's say a Roland / Boss saturation, fuzz, reverb, delay, etc.) ...
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0answers
54 views

Use step-down 1.3-35V converter together with a step-up 5-24V converter

I want to build a variable power supply. I am using a computer power supply and I want to make the 5 volt 20A output variable. I found an online website that has all the components that I need. ...
1
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0answers
73 views

How can I increse 12V and 0.5A DC to 200V DC?

I am very new in electrical circuits and I need help to create a circuit which would create from 12V and max 0.5A input, output with 200V and some small current. Consequently, I need to regulate this ...
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0answers
113 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 ...
0
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0answers
21 views

Driving an RFID device from a presumably noisy boost step-up converter

I'm building a circuit that will be powered by six AA batteries producing 9V at full charge. Part of the circuit powers an RFID device that works at 9V and probably somewhat less than that. I'd like ...
2
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1answer
1k views

How does such an USB step-up 5V-12V work? [closed]

I just bought a cheap USB 5V to 12V step up converter: Surprisingly, it works very well. There is few place for electronic components (maybe in the USB connector?), how can we do a 5V to 12V ...
0
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1answer
98 views

Step-up converter current limit 2A [closed]

In the specification for the step-up booster is max. output current limit 2 A (or any other value based on the specific booster). Does this limit apply for the whole range of supported voltage or for ...
2
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1answer
108 views

MC34063A step up voltage converter

i need change 5v to 12v that it use to supply a device; for this use MC34063A step up voltage converter; this site can calculate the parameter. i have problem all thinks is OK but i have same voltage ...
7
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1answer
314 views

How can I rectify up to 85 kV?

I've recently gotten into eletrochemistry, and I found out that if you break through \$\epsilon_{0}\$ with a high enough voltage you can ionize various gasses. I've already wound a 1:1250 EE core that ...
0
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1answer
100 views

LTC3862-2 Step Up problem, output voltage drop

I'm designing a solenoid powering and control device which is centered around the LTC3862-2 Step Up controller (see datasheet). I have taken as a design start point the typical application shown in ...
0
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2answers
245 views

step up from 2 AA to 3.3V [closed]

I've read some related questions, but I was not able to find/understand a proper solution I'm using 2 AA batteries to power a SAMD21 MCU (arduino mkr series), a DS18B20 probe and a MCP3424 ADC. My ...
0
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1answer
85 views

Designing a 6V --> 40V step up converter [closed]

I need to design a step up converter with the following requierements: Vin = 6V - 8.4V Vout = 35 - 40V, Iout = 2.5A Could anyone give me some insights on how to ...
0
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2answers
86 views

When to use step up and step down transformer

Well I once saw a video in which a guy made a spot welder using a step down transformer and in another video I saw someone make arcer using a step up transformer. Why using a step up to jump arcs and ...
2
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1answer
66 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 ...