Questions tagged [conversion]

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Converting measured S-parameter to Z-parameter does not match the Z-parameters measured on the same circuit

I have measured the S-parameters for a 4 port circuit. For a certain frequency those values are: ...
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How to convert the outputs from the AD8232 ECG modules back to the raw ECG millivolts (mV)

I have been working with the AD8232 ECG modules for a while now and I am trying to figure out what the raw ECG outputs from this module correlate to. I cannot seem to find any information from their ...
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3 answers
79 views

Mapping different resolution ADC to DAC

I have a 24-bit ADC that is controlled by an FPGA. I want to take the ADC input and output it from a 16-bit DAC that is also controlled by the FPGA. Do I simply ignore the 8 LSB bits of the data and ...
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3 answers
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How do electronics (like transformers) convert high voltage, low current to low voltage, high current, and vice versa?

I am fairly new to tinkering with electronics/electronic-adjacent ideas and I have been wondering: how do electronics get the desired voltage/current to operate properly? I understand in AC power, ...
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How to convert the outputs from the MAX30003 and/or AD8232 ECG modules to millivolts (mV)

I have been working with the MAX30003 and AD8232 ECG modules for a while now and I am trying to figure out what the raw outputs from both modules correlate to. I cannot seem to find any information ...
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33 views

Converting mains powered monitor into DC

I have a DELL P2212H LED backlit monitor which runs on mains voltage. The power supply is internal. I need to run this from a 12V DC supply. The main transformer has 3 outputs which goes through 3 ...
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2 answers
124 views

Converting square wave into a sine wave [closed]

I am trying to convert a 1 MHz square wave into a sine wave of the same frequency. What's the best way to achieve this?
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2 votes
1 answer
277 views

STM32H7 ADC Baremetal - ADC not ready - ADC no conversion

I am trying to make baremetal ADC driver for following development board STM32H723ZG Nucleo (144 pins). Reference manual: STM32H723 Reference Manual Datasheet STM32H7xx Nucleo Datasheet To simplify, ...
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100Base-T1 to 100Base-TX conversion

I am trying to convert from Fast Ethernet to Automotive Ethernet (and vice versa). I believe I have verified a solution and if someone can confirm, I would appreciate it. I believe I can just connect ...
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1 vote
1 answer
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How to relate resistance/reactance to parallel/series equivalent circuits?

Problem 7A of The Electronics of Radio asks the reader to find the relationships between resistance and reactance values in any arbitrary series/parallel circuit and their counterparts in a parallel/...
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-2 votes
1 answer
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Converting battery powered LED lights to AC power [closed]

I have 8 LED decorative pieces that are powered by 4 AA batteries each. Each piece has a control board for different light patterns. Since it's expensive to operate these devices by replacing the ...
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2 answers
75 views

AC signal combination

I have a question about combining two AC signals into one. For my project I need to convert stereo audio to mono audio. For the conversion I used this circuit: I made this simple circuit on my ...
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1 vote
3 answers
145 views

Mathematical conversion of hex to decimal

I am stuck with a very trivial coding issue. Please refer the link below: Cordic Algorithm using Verilog By what mathematical rule hex 26dd2b6a is equal to 0.607252935008814?
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USB B to C Receptacle Wiring

Hi I am working on a project and my PCB needs to convert from USB 2.0 to a USB C receptacle. Is this wiring correct? I am using this 14 pin USB C receptacle https://datasheet.lcsc.com/lcsc/...
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Adapting NP-F 7.4-7.2v to 6-6.3v for old camcorder power (JVC GR-AX280)

So my first time posting I have a JVC GR-AX280 that has a 6v to 6.3v DC input range at 1.8A. The goal is to adapt future proof NPF style 7.4-7.2v batteries via a mount adapter as its format of ...
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□ -> X Conversion

In cicuit analasys to make a circuit easier you can use delta wye conversion. This means that when there part of a circuit with 3 nodes, where each of the 3 resistors ar in betwen 2 nodes, this can be ...
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2 answers
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Creating a wire break alarm exclusively with surface mounts

Also called wire cut circuits, alarm circuits, etc. Basically a circuit that, when a wire loop is cut sends a signal out like a NO switch being pressed. I've made them before and it's mostly going ...
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3 votes
4 answers
549 views

How to convert leds from AA batteries to a DC source

I have 2 strings of 100 white LEDs each that are powered by a battery pack of 3 AA batteries for each string. What I would like to do is use one of my low voltage power supplies that are typically ...
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3 answers
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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 ...
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How to properly connect a USB-C 2.0 plug to an FT230XS module?

I am coming to you for advice and I also need your help. I am working on a motor control board and for the debugging side I use a USB-C 2.0 connector and a module from FTDI, the FT230XS. Here is my ...
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1 vote
2 answers
84 views

Will this Step Up Converter solve my problem?

For a project I am doing at home, I need to convert a 5v digital output from an Arduino to a 12v digital output to power a motor. A solution I found for this is using a step up converter. The step up ...
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-2 votes
1 answer
194 views

Why do we write the integer part from top to bottom and not the other way?

While converting the fractional part of a decimal number to another number system, why do we write the integer part from top to bottom and not the other way? Since the fractional part is 0, the ...
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1 answer
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I use the NUCLEO-L476RG board. ADC runs at 64 MHz and ADC has a 5.33 Msps maximum conversion rate with full resolution

I need to take 10 samples (10 Hz) per second. How can I set ADC configurations on CubeMX. I use the lowest sampling time (2.5 cycles), but the values I convert and use in ADC change very quickly. ...
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93 views

Can I have some help compacting this?

I am trying to build a transistor computer, and I want to save as much resources as possible. However, I also want it to be practical, so I am implementing a binary-decimal conversion. In order to ...
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1 answer
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Crank angle during cycling conversion

I work in a laboratory, and we are performing experiments on a cycle ergometer, during which we would like to deliver magnetic stimulations during cycling exercise. To do so, we need to know the angle ...
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51 views

4-20 mA analogue signal conversion to flow rate

I have the following control setup: For that, I have data recorded for every I/O block, and I am asked to determine the function used by the AIN block to convert from an analogue 4-20 mA signal to a ...
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114 views

200Ah battery for a 500W mini ITX PC

I want to make a project that allows a 500 watt PC to run on batteries for 4 hours, so it can be worn by an individual on their back. I found the below calculation to get the capacity of the battery ...
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2 answers
4k views

how to convert/calculate \$\text{kJ}/\text{m}^2\$ to \$\text{W}/\text{m}^2\$

I have some solar radiation data that comes in \$\text{kJ}/\text{m}^2\$. These data were formerly available for download in \$\text{W}/\text{m}^2\$. I tried to find some ways to do the conversion from ...
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0 answers
39 views

Convert Ni-Mh charger's connector from cigarette lighter to USB

I recently purchased a very basic airpump to inflate a mattress. As we will be taking this mattress to a camping trip on a motorbike, we wont have a car cig-ligther socket (12V), only USB 5V. This is ...
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1 answer
60 views

How to recalculate amperes to amperes/micron (transistor characterstics)

I measured the transfer characteristic of P-type FET (so I have drain current versus gate voltage.) The authors usually present results in μA/μm (microampere/micron) versus V (volt.) Because I have ...
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Level Translation Clarification (LVPECL and LVDS)

I am trying to understand something about level translation. I am sure I am probably misunderstanding something basic, so I'm hoping you can help me understand. I am trying to convert a LVPECL signal ...
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1 vote
1 answer
71 views

L6-30R with L5-20P Devices

My computer lab just got a power upgrade, now we have 208V/30A with L6-30 receptacles, in addition to what we previously had. I have some leftover rack mounted power distribution units (PDUs) given to ...
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1 vote
2 answers
6k views

Replace 3 X LR44 battery requirement with a single AAA or AA battery

I have a rowing machine that requires ("eats," more like it) three LR44 batteries. I'd like to replace that battery requirement with something more common and rechargeable. I've made a ...
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1 vote
0 answers
70 views

temperamental LED light

I have installed LED tubes in my kitchen ceiling light. They replaced the old fluorescent tubes. I removed the ballast and wired the fixtures according to instructions which essentially connected the ...
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0 answers
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Pressure to current conversion

I was trying to convert the pressure values (in psi) into 4-20mA current. The range of pressure values I have chosen is between 0-10Psi. But according to the link given below the pressure from 3-15Psi ...
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1 answer
137 views

PWM square wave to DC voltage simple conversion

How do I convert a PWM square signal into a stable DC voltage (0V - 3.3V) in easiest and reliable way possible? (preferably in programming- microcontroller)
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0 answers
232 views

Convert from 4 bit binary number to 2 bit binary number

I am currently using logisim to output a 2 bit binary number, however, the bit adder releases 4 bit binary number instead. Is there any way to fix this? (I am currently using v 2.14.6 .)
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1 answer
590 views

ADC conversion time formula

I am using the built-in ADC of Renesas S5D9 microcontroller. I am setting the ADC clock frequency to 60 MHz and a 12-bit resolution. I am getting the samples, but I want to know at what sampling ...
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5 votes
3 answers
642 views

Ambiguity in ADC conversion of analog voltage to digital value

I have question about the common formula used to turn analog input voltage of ADC into an integer binary number that is as bellow : I think that in the equation above N is not integer but floating-...
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2 votes
3 answers
105 views

Frequency Conversion Product Lower than 0 Hz (Negative Frequency?)

If I have a bandwidth of frequencies from 200 to 500 Hz made from cosine waves and I mix this with a oscillator at 400 Hz which is also a cosine wave, the mathematics of conversions show that I will ...
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1 vote
3 answers
537 views

To ground or not to ground: portable power supply

So I'm creating a backpack system to carry around and shine a 100 watt HID lamp (using the arc tube for UVC mineral collecting.) This system currently includes a 12v lithium battery, a power inverter ...
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146 views

Make a molex to USB Female power cable?

Could I recreate this molex to female USB cable by cutting off the molex connector of a fan and the female end of an USB extension, then solder the red and black wires together? If it's possible, ...
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1 answer
163 views

Audio line level conversion from consumer to unbalanced (presumably) pro 1/4" jack of unknown sensitivity and impedance. 400W 1980s PA amp

I have a lovely pair of speakers that achieve their almost flat response by dampening spikes. Consequently they eat amp power for breakfast. I have been given a 400W RMS per channel 19" rack mount ...
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0 votes
1 answer
117 views

Converting +/- 10 V sine to 0...3.3 V sine

I need to convert +/- 10 V sine to 0...3.3 V sine. I made a circuit from this topic How to change -10;10V sine wave to 0;3.3V dor ADC The one with two MCP6021's. The problem is that at some point ...
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1 answer
169 views

How to convert from 2s complement values to binary? [closed]

I am trying to build a calculator that can perform addition and subtraction and works like a real calculator(ie, you press the first number, than the operation, then the second number, and press = to ...
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3 votes
2 answers
475 views

Does using "16's complement" for hex always yield the same result as two's comp for binary?

I'm sure it's obvious as day, but i'm having a hard time convincing myself with all these carries and conversions... Given that i'm operating on the same number (say, ...
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3 votes
1 answer
155 views

ADC issue - possible non-monotonicity?

My ADC (two of them under test - the Analog Devices AD7676, and the Maxim MAX11108) is a 3 Ms/S SAR. The device is powered and referenced by a precision 3.3V reference device (100mA max). The ...
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1 answer
219 views

DIY attaching an EU power plug to an US charger?

I've received some Chinese walkie talkies today, which annoyingly enough had the charging adapters to the charging stations come with US plugs instead of EU plugs. The adapters are marked with ...
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0 answers
1k views

Decimal to Excess-3

To convert the given decimal number to XS3, I have to add 3 to each individual number and convert that number into BCD. If the given decimal number is 12 then adding 3 to each gives me 45 and the ...
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0 votes
3 answers
509 views

Compare white LED radiated optical power: lumens vs milliwatts

I'm trying to compare the brightness of various white LEDs, some of which are listed in lumens and others in milliWatts (this is milliwatts of optical output, not watts of electrical power consumption)...
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