Questions tagged [conversion]
The conversion tag has no usage guidance.
-1
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1answer
31 views
0
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2answers
47 views
Transformer in 127V AC - 5V DC Converter
There is a transformer in this 127V AC to 5V DC Converter. I am trying to get one of them. But I don't know what kind of transformer is and I am unable to find it in my city.
Also, it is so small. ...
-2
votes
1answer
68 views
converting 80Vdc to 50Vdc
I am working on a project that requires an existing power supply outputting 80VDC @ 60A to be reduced to 50VDC. Current is not really an issue in the application.
Does anyone have any useful ...
0
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0answers
44 views
DIY ATX PSU turns off when attaching load on 12V rail
I want to convert my old ATX power supply to a simple bench supply for 12V devices. On the label it says it's a 300W PSU where I can use 264W on the 12V rail (see image below).
https://imgur.com/...
0
votes
1answer
67 views
From which circuit, I will be able to measure high frequency signal (in MHz) by using micro controller with 200 Ksps ADC?
I want to measure 20 MHz signal by using microcontroller with 12 bit ADC And 200 Ksps sampling rate.
Which circuit should I design in order to measure it accurately?
0
votes
1answer
64 views
Facing issue while doing ADC conversion
I am new to the PIC programming, and in below program trying to blink LED for specific range of resistance. But when i have debug , i found it out that while loop established to wait till conversion ...
2
votes
6answers
172 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 ...
1
vote
1answer
71 views
How to convert high voltage DC at low amps to low voltage DC or AC at high amps?
How to convert high voltage 500 volts DC at very low amps to lower voltage 12 volt DC or AC at high amps? Must I use an electrostatic motor or can I use an op amp?
The reason I am posing this is a ...
3
votes
1answer
167 views
5V (analog) to 3.3V (analog) for current measuring
I want to use an ACS723 current sensor and I would like to transform that signal into digital using the integrated ADC inside a ESP8266 (Wemos D1 mini).
I'm not sure how can I do that.
I think maybe ...
2
votes
2answers
88 views
Current feedback amplifier input structure
This is an input stage of some obsolete CFA (current feedback amplifier):
Current feedback amplifier is a transimpedance amplifier, which converts current signal at its input into voltage signal at ...
-1
votes
1answer
77 views
Need to convert unbalanced to differential input OPAMP
I have the following filter after the DAC chip (currently with unbalanced outputs) working very well, but I need now to change the DAC chip. The new source has differential outputs.
Is there a ...
0
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1answer
76 views
AC input not matching DC output
I know this might sound stupid but it has me stumped. I am trying to calculate the average AC power input required for a few electrical devices which will be connected to a generator.
The issue I'm ...
1
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2answers
87 views
Is 240V to 24V DC PSU to 120V 60Hz inverter a low cost way to convert 240V 50Hz to 120V 60Hz?
I've been looking at the companies providing step down frequency changing units in the 2000W range, and their enormous size seems to be reflected in an equally enormous price. SO...why can't I just ...
0
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0answers
107 views
How to convert KiCAD pcb file to HPGL/1 for use with old HP plotter?
I intend to use my HP 7475A for directly plotting etch-resistant ink onto a pcb. My problem is that, while KiCAD has an option for HPGL exports, it only generates HPGL/2 compatible files. Those make ...
0
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2answers
79 views
Safe assumption for AA and C battery current draw
I have 5 LED candles with built-in timers, but they eat batteries, so I'm hoping to use an AC adapter to power them instead. They are all different with some using AA batteries and others using C ...
0
votes
1answer
84 views
What is the most efficient 3-phase to single-phase AC transformer for a home grid
So a friend of mine is getting electrical power installed for an urban site he bought, and I'm just trying to be a good friend by looking into this.
The company doing the installation recommended he ...
0
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5answers
160 views
kW to kWh Conversion
Will appreciate if someone enlighten me. I tried searching online but I am still confused.
Considering I have an hour of power - 25380 kW. How do I convert it to kWh (energy)?
I am not sure if I ...
4
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6answers
1k views
How to deal with signed int overflows
Brief background first; I have data from CAN bus of a steering angle which is obviously in hex. The steering angle covers two bytes of a message. The specification document I have says that those two ...
0
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0answers
169 views
Convert parallel LVDS to csi-2
I have a camera outputing parallel data and I want to interface it with iMX6 module which accepts CSI-2 camera data.
Are there any ready & cheap solutions to convert parallel into CSI-2.
Lattice ...
0
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1answer
221 views
STM32F20x ADC Two Sampling Delay Tconv
I need to calculate the total conversion time, i have been looking through the reference manual but without any luck.
This is my set up:
...
1
vote
0answers
33 views
AC coupled ADC calibration
I am using a Texas Instruments DSK6713 and Matlab/Simulink for a project. I used Simulink to generate ADC and DAC code for my board to pass values from a function generator from input to output. I am ...
0
votes
1answer
113 views
current control PWM switch model?
As I tried to derive the transfer function of the boost converter(peak current mode control) in CCM and DCM as Vout(s)/Verr(s) using the CC-PWM switch model accordingly to the book of Pr.Christophe ...
0
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1answer
167 views
How to process energy (kWh) meter reading data of half-hour interval
If I am to process time series of energy data (point estimate every half-hour interval), and fit it into the following formula for dimension reduction:
Haben's paper
I was advised to use power, not ...
0
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0answers
57 views
Why is the factor d involved in the bandwidth when doing amplitude shift keying?
In the book by Forouzan, under the section Bandwith for ASK( chapter 5), it's given that
However, there is normally another factor involved, called d which depends on the modulation and filtering ...
0
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3answers
845 views
How convert kWh to W
I want to know if there is an approximate or exact way to know the consumption in watts of household appliances in a house from the monthly consumption that reaches the bill.
Taking into account that ...
0
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1answer
191 views
Weighted Resistor DAC Equation
I'm trying to study DAC .. In my reference text book the equation is given as follows
On some online sources 2 is given as the subscript.Please see
https://www.allsyllabus.com/aj/note/ECE/...
0
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1answer
595 views
Convert from signed magnitude to twos complement [closed]
If I have the number x=1111001 in signed magnitude what would x be in two's complement? Is it 0000111? What about -x in twos complement?
7
votes
4answers
977 views
In digital systems do we discretize both time and magnitude or only time?
In studies of Digital Circuits or Digital Electronics or Digital Systems, the very first step is to convert an Analog signal / Analog system into a Digital Signal / System.
In this process of ...
2
votes
1answer
763 views
How can I tell what amperage a 12V rated electrical device will run at 5V?
I am buying a TEC 12706, a thermoelectric Peltier.
It's rating is: 15.4V 6A (maximum voltage and amperage). I want to run this Peltier at 5V and was wondering how I would convert this data to see ...
1
vote
3answers
565 views
Why high impedance source in ADC input causes error?
Recently, I had a problem with two sensors (LDR and LM35), when I tried to read them in Arduino ADC, both measures were totally wrong. Searching in the internet, the answers are related with high ...
0
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0answers
66 views
Measuring rectified voltage
I am designing an analog circuit for motor control for that I need to rectify AC voltage using halfwave rectifier but I don't know how to calculate the rectified voltage in the given circuit below.
...
0
votes
1answer
73 views
Level Conversion RGB LED Strip Noise Resistor (3.3 to 5)
I recently prototyped my circuit on a breadboard that controls a WS2812b RGB LED Strip.
The PDIP (breadboard friendly) ATMEGA644 uses 5V logic while TQFP uses 3.3V logic.
The LED strip specifies a ...
0
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2answers
126 views
Trigger digital interrupt on negative voltage
For a little project of mine (FPV OSD for Quadcopter Camera) I need to detect every time the signal voltage goes negative. The Signal I get is NTSC. Here each line sync is marked by the voltage going ...
0
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3answers
332 views
Why not produce household electricity with natural gas generator?
I don't have an engineering background so I apologize in advance if this seems like a silly question.
So I noticed natural gas in my area is a lot cheaper than electoeocty. So I was asking myself ...
0
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2answers
246 views
Need advice on power supply for a device in India purchased from USA [closed]
I bought an Epson Powerlite HC 2040 projector from Amazon US site. I am going to use it in India.
However, the power cable that comes with it has a tag stating (10A 125V). Since I am an ordinary ...
0
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2answers
379 views
Pc psu conversion to run 12v tools
Hi I am trying to modify an old pc psu 350w in order to run some 12v and 9.6v cordless tools. I put 2 10Ω 5w resistors in parallel between 5v and ground and I sorted the green wire with ground. I can ...
0
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1answer
44 views
A different way for converting to 2's complement
One way to convert any number to 2's complement is by adding the number to 256, if the number can be represented by 8 bit number. For example if we want to convert -100 to 2's complement we do ...
0
votes
3answers
290 views
Can audio isolation transformer be used for AC power isolation?
I am developing my own PLC that is powered off a 24VAC transformer that is shared with a thermostat and some other controller devices. I wanted to isolate the 24VAC going into my PLC to protect it and ...
1
vote
1answer
680 views
EGA display converting to VGA - screen's shaking
I've recently tried to make conversion from EGA (probably, couldn't get scope to verify) to VGA to replace an old factory CRT monitor to LCD.
Screen displays fine but it appears to shake vertically ...
1
vote
2answers
298 views
Can I rewire a 240 V 3 phase steamer to a 240 V 1-2 phase?
I have this steamer unit that came in as 240 V, 3 phase that I am trying to adapt to a 1 (2) phase household. The unit needs 60 A and generate 9 kW.
As per the manufacturer, and the below diagrams, I ...
0
votes
3answers
392 views
Conversion of 11,200 MWh to a XX MW facility [closed]
How large of a battery storage facility (in MW) would be needed to supply 11,200 MWh of electricity for 4 hours before becoming completely discharged.
The facility would be comprised of lithium ion ...
1
vote
3answers
966 views
DC plug pins. Which is positive?
I am trying to convert my old 9V battery operated Wah-wah pedal to a DC converted one, so I can use AC power. I bought a DC plug for it and was told that the center pin is for ground. However there ...
3
votes
2answers
12k views
Reading internal temperature sensor STM32
I'm trying to read internal temperature sensor. Each time, the value from ADC conversion is 296 which results in negative temperature. Should I add something to the code below, enable some peripheral ...
-8
votes
1answer
111 views
Amp limit on 12v to 15v convert [closed]
Can anyone tell me what the the max amperage that would be able to go across this circuit? simple 12v to 15v conversion
2
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0answers
150 views
What MOSFET circuit replaces a diode in a 48V 40A escooter?
I want to use a 1kW generator and convert my eScooter to a hybrid.
The scooter uses a 48V SLA battery bank of 4x22Ah SLA batteries in series.
I used a transformer from a 1200W microwave oven and ...
1
vote
2answers
407 views
How do star- (wye) plus delta-connected windings provide a phase change every 30°? [duplicate]
From the twelve-pulse bridge subsection of the Wikipedia article on High Voltage DC converters:
The phase displacement between the two AC supplies is usually 30° and is realised by using converter ...
-1
votes
1answer
1k views
Would an ATX PSUs internal fan work as the dummy load for a benchtop power supply conversion?
The PSU has 2 12V rails listed in its specs on the side, however both show continuity between them when I tested it with my multimeter. I then tested continuity between the positive from the fan and ...
1
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0answers
60 views
How much energy is lost between (solar panels+battery pack) & DC operated electronics due to conversion
For the sake of simplicty;
I have solar panels generating Xvolt, Yamperage.
All of the power will be used by Xvolt devices.
But all of the house and device adapters are designed to use AC grid. So ...
1
vote
2answers
2k views
Full Wave Rectifier Efficiency
I was readings this article and extracted from it that "The maximum efficiency of a Full Wave Rectifier is 81.2%". Is that true, or alternatively is there some other fundamental limit on AC/DC ...
2
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1answer
139 views
AC Ultrasonic Speaker Design [closed]
As a software engineer I apologize in advance, I'm definitely an amateur in the field of electronics.
Problem
I'm looking to gauge distance from an ultrasonic emitter to a mobile device. To test ...
