Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [conversion]

228 questions
16
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5 answers

Does AC Power have Polarity?

When I run 24VAC into a full wave bridge rectifier followed by a 220uF electrolytic capacitor to turn it into ~32VDC, the source has two wires. Does it matter in what order I connect the AC wires to the input to the bridge rectifier? If so how do I…
vicatcu
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6 answers

Cascading ADC's to get higher resolution

Suppose I have a pair of 12-bit ADC's, I can imagine that they can be cascaded to get <= 24-bit output. I can think of simply using one for the positive range and the other for the negative range, though there probably will be some distortion in the…
errordeveloper
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3 answers

Single-phase to 3-phase conversion

I have seen some boxes (with some capacitor circuits inside) which do single-phase power supply to 3-phase power supply conversion. The problem with them is that they cause the load motor to heat up, because the phase difference between the legs is…
vivek
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8
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3 answers

Combining multiple AC/DC adapters

Many of us have lots of devices that uses AC mains (110V/220V) to DC (typically 12VDC) adapters. There's my LED table lamp, my Wi-Fi router, my Gigabit switch, my powered USB hub,..... Such AC/DC adapters are dirt cheap from China, so I highly doubt…
Ivan
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7
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3 answers

Converting 3V3 PWM to 5V analog

I want to convert a 3V3 PWM (10 kHz) signal to a 0-5V analog DC signal using transistors only (no DAC), if possible. The output logic should be non-inverted, i.e. 0V->0V and 3V3->5V. The time constant of the conversion should be <20 ms. Which…
Bip
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7
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4 answers

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 converting an Analog function to a Digital Function, do…
Atanu Sarkar
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3 answers

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 or my calculations are wrong? #define…
VIPPER
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7
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5 answers

What value to use to convert ADC value to voltage?

While working on my project, I got to a point where I don't know the answer. I have a 10-bit ADC (the one incorporated in the ATMEGA328P) and it returns values up to 1023 (210 - 1). The official documentation states that the equation to convert the…
jparenas
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4 answers

Converting cordless to corded: Pulsing issue

So I am rather new at electronics and electrical engineering. But here is what I am trying to do and what I need help with. Some years ago I had bought a cheap set of cordless power tools. Naturally the battery packs died much quicker than most. So…
The Duke Of Marshall שלום
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6
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3 answers

Systemverilog to Verilog translation

I have a code block (multiple files) in Systemverilog. I am using the Xilinx tool flow that does not understand SystemVerilog (an old part). Is there a tool (or a rule book) I can use to convert the SystemVerilog to standard Verilog-2001 code ?
boffin
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6
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4 answers

Quantization noise and Quantization error

What is the difference between the quantization noise and quantization error in ADC? I understood that the quantization error you get when you convert analog to digital and quantization noise when you convert from digital to analog.
Sam
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6
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3 answers

Logic Conversion 3.3V to 5V (Current Related) 74HC 74HCT

A beginner style question. I'm attempting to perform some logic level conversions on 3.3V signals to 5V using the 74HC4050D powered at 3.3V and 74HC541 powered at 5V. Is it OK to directly connect the outputs of the 74HC4050 to the inputs of the…
Peter H
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6
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3 answers

Convert VAh to kWh

Sorry, this might be a stupid question as I'm not an electrical person. I'm analyzing an electricity consumption dataset and the consumption is measured by apparent energy (VAh). How do I convert this VAh to kWh as normally seen on a power bill? Or…
foo
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Putting far more mechanical energy into a generator than its electrical load

Funny how I was pondering about this question for a long part of the day yesterday, and today I was at stackoverflow and in the box with the featured questions from other SE sites this very related question appeared: Will a 3 phase induction…
Mike Nakis
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3 answers

Converting a DPS800 server PSU into a standalone 12V PSU

I recently got my hands on 2 server PSUs from a HP Proliant DL380-G5. HP model DPS-800GB A REV 06M Series HSTNS-PD05 Partno: 379123-001 (They appear to be made by Delta, going from the logo on the internal PCB.) These can output a whopping 82A max…
Tonny
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