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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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35 views

Need to boost 20vdc to 84vdc 90 watts . Is this a taller feat then a 60v boost circuit? going from usbc breakout board fairchild chipset

I've already made one that goes 60volt, but now have a device that needs 84 volts to the input of a BMS (battery management circuit). 90 watts -- OEM charger is 1.45 amps @84 volts. https://www....
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1answer
66 views

How calculate the transfert function of boost converter with input capacitor?

the Boost converter figure is like this
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1answer
174 views

Designing voltage to current converter 4-20 mA [closed]

I'm currently designing (or at least trying to) a RTD amplifier with ICL and current outputs. What I've got so far is a working RTD and ICL schemes, but I still struggle to design a proper converter....
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1answer
33 views

Boost Capacitor of Step-down converter

I'm working on the LT8607 Step-down converter to convert from 12V to 5V/500mA output. The circuit schematic is as below. What is the purpose of using the BST capacitor as shown in the schematic.
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3answers
108 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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2answers
102 views

Buck, Boost..etc Is there always an IC for that?

First of all I am still in school so perhaps I have not been exposed to material that may answer this question for me. I have recently become interested in power electronics. I have purchased a book ...
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2answers
57 views

Modifying a buck converter for lower current rating

I have been learning about buck converters and I think I understand the principle of their design. However, I am unsure of how a current rating would be calculated for a particular design. The ...
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1answer
92 views

Need electrical schematic of this component

For my graduation project I need this converter but I would like to have the electrical schematic. This is the link to the store where I bought the part. That's all I know. I have looked up the chip ...
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1answer
143 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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6answers
245 views

Converting 0-5 volts (linear) to +2.5 — 0 — +2.5 volts (“vee”)

I'm trying to find a simple way to convert a 0-5 V output from a joystick hall effect sensor to +2.5 -- 0 -- +2.5 V. Here's how I want the response to look: The output voltage will be sent to a ...
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3answers
109 views

Converting a soldering station from 110 V to 220 V

i bought this soldering station from the USA and it is 110 V. I need it to be 220 V. Is this possible without external tools? There are 3 Trimpots: V1 VR1 VR2 This is the inside of the station:
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2answers
122 views

How does Ethernet to CAN conversion work?

I am wondering how an Ethernet-to-CAN converter works. CAN is a multi-master broadcasting network where messages are associated with IDs. Each message type has a unique ID. Devices listen to all ...
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1answer
36 views

Forward Converter - Voltage through primary winding Question

So my waveform is a step function, where maximum voltage is at Vin = 40V, and minimum voltage is (-N1/N3)*Vin = -200V. The minimum voltage doesn't sound right to me, so I was wondering if anyone can ...
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1answer
159 views

What might be the reason for improper turn on of IGBT

Here I am applying 3-phase rectified dc to the non-isolated boost converter, the magnitude of applied voltage is 450V and desired o/p voltage is 475V. Switching frequency of PWM is 28k. I am using ...
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2answers
986 views

VGA to composite circuit. Does it work?

So I found a VGA to composite passive converter circuit online, and was wondering if it would work, if the vga timings were modified to match the timing of composite. Here is a relevant schematic:
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1answer
69 views

12 V input to multiple 5 V outputs?

I have that project, where I have as an input voltage 12 V (lead acid battery) and would like to have 4 output of 5 V 1 A that would be switched on and off with a mosfet. I'm thinking which way you ...
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1answer
181 views

Parallel 18650 battery pack voltage not stepping-up with Boost converter. Why?

I'm new here and I hope this is the right place to ask! I have assembled a 6P 18650 battery pack out using Samsung 25R cells, soldered altogether with Nickel strips, effectively giving me 3.7V 15Ah. ...
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1answer
83 views

Frequency-to-Voltage convertor diagram questions

I'm relatively new to electronics, but I'm interested in making the Frequency-to-Voltage convertor linked here as part of a larger project linked here. Here is a diagram of the circuit I want to make:...
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2answers
38 views

Nmos trigerring in 4-20mA converter

Here is the circuit I am trying to understand: It comes from the following application note from LT: https://www.analog.com/media/en/technical-documentation/technical-articles/D61_EN-Convert.pdf I ...
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1answer
61 views

LM2917 draws too much current

I built a prototype of a frequency-to-voltage converter using a LM2917 following exactly the "Minimum Component Tachometer Diagram" example schematic - just to play a bit and understand how it works. ...
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1answer
72 views

About zero voltage switching boost converter designing [closed]

I am developing zero voltage switching in a boost converter for input 48 V and current is 20 Ah. Also: output power is 60 W, output voltage is 200 V, output maximum current is 0....
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2answers
369 views

Convert 3v to 5v very high amperage using boost converter

I am trying to build a power bank that has 3 output USB ports that can provide 2.1 amp each; it has 8 LiPo cells. So total of 2.1×3=6.3amps so basically 7 amps at 5.1v out. I have built the ...
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1answer
127 views

How can I boost 1 Volts 30 Ampere input to 5V with maximum Current limit of 5A?

How can I boost 1 Volt 30 Ampere DC input to 5V DC with a maximum Current limit of 5A?
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2answers
230 views

Purpose of this oscillator (74HCT14-based) on RS-232 to RS-485 converter?

I am reverse engineering an RS-232 to RS-485 converter to understand how it works. I have attached the schematic that I reverse-engineered from the PCB (apologies for the hand-drawn schematic). I've ...
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2answers
137 views

What is Vrect in a Voltage Regulator?

I'm just reading through Texas Instruments' Application Report on Switching Regulator Fundamentals and came across the half-bridge converter and the formula for both the output voltage of the entire ...
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2answers
175 views

Is there any way to convert 50 Hz directly to 1 MHz? [closed]

I want to know whether there are any ways to convert 50 Hz AC to 1 MHz without Voltage Controlled Oscillators? If I'm correct, all the normal circuits convert the AC to DC and then use it to ...
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3answers
133 views

Can I use a Step-up Power Converter with Arduino instead of a Relay?

I want to make two projects that use a 12v input, a solenoid valve and a electrical lock. Both need a 12v current to work. I've seen some exemples for both projects that use a relay and an Arduino to ...
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2answers
57 views

A question about the working principle of a frequency to voltage converter

This is a question about the big picture of a frequency to voltage converter. For example when I use this Phoenix Contact MINI MCR-2-F-UI(-PT) f/V converter module with the settings to map a input ...
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1answer
47 views

What is such parameter called for a frequency to voltage converter

In a frequency to analog voltage converter what is the parameter which is related to the response of the conversion. So for example I use this converter module and Im wondering how fast the change in ...
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1answer
41 views

Cathode of Rectifier diode connected to GND of Error amplifier circuit

[![enter image description here][1]][1]I've this circuit of 60v to 12v buck converter. In this UC3845B is used for gate firing. I didn't get one thing in the circuit that the Cathode of rectifier ...
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1answer
62 views

About Ac to DC convertor..? [closed]

Which is the best way to convert Ac to DC , with maximum efficiency possible by using a transformer. The required voltage is 5v and current is 1a . I saw a circuit from my mobile phone charger they ...
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2answers
44 views

Having trouble with a frequency to voltage converter for universal frequency input

I'm having trouble with a frequency converter. The data sheet is given here. I set the converter for universal frequency input and voltage output. These can be configured by DIP switches. The diagram ...
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0answers
47 views

Suggestions for switching 800VDC converter on/off

I'm stress testing(turning them on-off with load every 300 seconds for 1-2 weeks) the components that we are willing to use. have tested several battery chargers with AC input with using a timer relay ...
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1answer
212 views

Step up converter 1-3V to 5V fixed for supercapacitor

I would like to use this step up converter, LT1073 - Micropower DC/DC Converter Adjustable and Fixed 5V, 12V, to drive an input in the range of 1 V to 3 V (input is a supercapacitor). In ...
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2answers
116 views

Could the extra power not used through a regulator or buck converter be used in another load without taking away power from the regulator? [closed]

I’m making a design for a crank generator which will charge my phone and a battery at the same time. The generator will be connected to a bridge rectifier, then a buck (step down) converter, which ...
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0answers
47 views

5VDC output converter going to 10V when IC is connected

I have a pcb which uses ICs including two MCP3008. The voltage provided by the DC DC converter is to be 5V, and it is 5V when the two MCP3008 ICs are not inserted in the sockets. But when I place ...
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1answer
527 views

RS485 to RS232 conversion?

I need to connect a sensor that uses a RS485 transmission to RS232 or something I can read through the com ports on my data logger. I can't use usb ports or virtual com ports due to the program I am ...
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1answer
420 views

How to correctly test a 4-channel Logic Level Converter?

I have a 4-channel logic level converter (it says Level Converter MH on its back and seems to be a very common one for Raspberry Pi and Arduino usage) and wanted to ...
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3answers
343 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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3answers
91 views

Confused on How to Output the Current and Voltage I want from 18650s in Parallel

Recently I purchased two Samsung 30Q 18650 Batteries, and I want to use them to power a project, but I am confused on how, say, USB Battery packs, output a constant 5v 2.1 Amp by using an 18650 ...
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0answers
89 views

How to design inductor for non-isolated boost converter?

I am trying to design an inductor of 500uH for non-isolated boost converter from following data. Input voltage Vin=330V DC, Maximum duty ratio Dmax=63%, Switching frequency Fsw=30kHz, Saturation flux ...
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3answers
568 views

Can I use a power strip with max 250v to a 120v power outlet without a converter? [closed]

I'm going to move to Canada from EU. From my research, most people said that if someone from US moves to EU, they'll need a power converter otherwise it might fry the thing. My question is, if I use ...
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2answers
108 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
186 views

Step-up converter with Vin, Vout, GND

I want to use pololu step-up converter https://www.pololu.com/product/2836 in order to power a 5V device with two Ni-Mh batteries (1.3V each). It has only Vin, Vout and GND connectors. I've checked ...
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3answers
44 views

Get 1,5U voltage on the transformer

I have a transformer with a midpoint that gives a voltage of 1U at the ends of its secondary winding. Can I, using only capacitors and diodes get a DC voltage of about 1.5U (but less than 2U)? If so, ...
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1answer
51 views

Looking for a component that lets me choose where to draw power from [closed]

I would like to have a switch or box that allows me to plug a battery and wall power into the box, and then has a switch that chooses which power to use for the output. The ideal inputs of the box ...
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1answer
144 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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0answers
638 views

Power factor and Harmonics associated with Electric Vehicle charging

What is the power factor associated with (typical) DC fast chargers and onboard chargers in electrical vehicles? Also, how much is the harmonic content (especially triple-N harmonics) associated with ...
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1answer
95 views

Flyback smps or floating buck converter?

I want to drive a 180V/1A string leds from 220VAC. Which topology should I use: flyback smps (with transformer) or, floating buck step down converter? I know that buck converter will be not ...
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1answer
60 views

Design of SMPS for running 10 bldc motors [closed]

I want to run 10 motors, each motor has specification of max 70 V and max current 160 amps. My doubt is, is it possible to build SMPS for these purpose. If not what would be the best alternative. I ...