Questions tagged [scaling]

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303 views

How can I do two points scaling in electronics? 0.6 V - 3.2 V to 0.0 V - 3.3 V

I'm seeking a solution how to do a two point scaling in electronics. I have tried an Op-amp, but it did not work very well. So I wonder if you have some ideas how to do two point scaling from e.g 0.6 ...
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0answers
37 views

Correcting non-linear response of 5050 RGBW LED strips

I'm a non-engineer asking this question. I'm using a so-called 5050 RGBW LED stips for a project. The level of each colour is controlled by a mosfet transistor (IRLZ34N) which is in turn modulated by ...
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2answers
40 views

How to change get positive value on my weighting Scale?

My weighting Scale is working fine when I keep weight after the start. But I am getting stuck when I keep weight before starting my weighing device. When I do this auto-calibrate with available weight....
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1answer
32 views

How to scale my hal ratiometric sensor output?

I have a UGN3505 sensor that converts magnetic flux to voltage. The output at zero magnetic flux is 2.5V and the difference in the flux depending on the polarity varies the voltage from 2.5V. I want a ...
3
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0answers
69 views

What is the shortest possible *channel length* in a currently available commercial CMOS process?

I'm aware that terms like "5 nm", "7 nm" for the latest technology nodes no longer refer to any linear dimension of the transistors, although I have seen some interpretations in ...
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0answers
44 views

Increasing supply rails for low size MOSFETs

With decreasing sizes of MOSFETs, the supply voltage has also scaled down so as that the electric fields in the device are not large enough for them to breakdown. However if this depends only on ...
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1answer
63 views

Fourier Transform Time Scaling Property using f (frequency) or w (omega - angular frequency)

The time scaling property for a fourier transform is as follows: My book shows this property in terms of \$f\$; however, my instructor likes to use \$\omega\$. I have also seen this property written ...
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1answer
55 views

Scaling a 0-90 ohm range to 10-520

The fuel sending unit in my car operates within a range of 10-520 ohms. I want to replace this unit for one that runs in a range of 0-90 ohms. I'm assuming I will need something to compute the change, ...
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4answers
507 views

dB scale in LTspice

I have a question about the dB scale in Ltspice. As far as I know it uses 1 of the unit (so 1V in case of Voltage) as a reference and then plots the dB value, which is defined by 20*log(V/Vref). (So ...
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1answer
91 views

Design of programmable scaling amplifier as a project for undergrad

I am building a custom microscope, PhD in biomedical engineering. I would like to have a scaling amplifier, with programmable offset and gain, that takes 0..10V signal X (from piezo element) and turns ...
0
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1answer
180 views

Signal voltage scaling

I have a linear range control signal from 1.75 V (0%) to 3.22 V (100%) . How can I convert this to a 0-5V signal (0-100%)? I have a single +5V supply with same 0V as control signal.
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1answer
135 views

Resistance Conversion/Scaling Circuit

I'm looking into building a custom gauge cluster for a project truck. The fuel level sending unit that I have will read 40 ohms when the fuel tank is empty, and 250 ohms when the fuel tank is full (it'...
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0answers
250 views

Auto Scaling in a Multimeter

I’m trying to create a multimeter, I’ll be mainly using a 16 bit ADC (ADS1115), an ESP8266 on Node MCU, I’ll use the MCU to communicate with a phone app to switch between different multimeter modes, i....
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1answer
86 views

MOSFET as a Capacitor in IC

I was reading in a book that it is often possible to realize a certain capacitance in Integrated Circuits by exploiting the Gate Capacitance of a MOSFET. I read that the main disadvantage of this ...
1
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2answers
210 views

Scaling level of PWM signals

I am going to scale PWM 24V generated by PLC to PWM +5V by means of optocoupler TLP521 and MOSFET BSP295 in order to control a micro servo motor (MG90S). What I have tried till now is the below ...
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1answer
102 views

feeding scaled down voltage to XADC (Xilinx)

simulate this circuit – Schematic created using CircuitLab I have XADC (Xilinx) with single ended voltage range of 0-1V. To regulate the output of a DC/DC converter let's say 15V i feed the ...
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2answers
202 views

Can I change op-amp supply voltage without affecting circuit behaviour

I am working on an audio project which is based upon various sections of several different schematics from various old musical instruments. I want to make a test board that has multiple different ...
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0answers
45 views

Acceleration of sequential computation over time

I am looking for a model (or "law", as in Moore's law) to describe the acceleration of sequential computation over time. By sequential computation I mean, for example, repeated applications of a hash ...
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0answers
73 views

Scaling of magnetic field strength and flux density measurements and shape of hysteresis loop

Note: this is part of a larger question which I was asked to separate into subquestions. Other subquestions: 1 and 2 I'm using the method outlined here to measure the induced magnetic flux density in ...
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5answers
3k views

Negative Power Supply for Op Amp

I have a 12V (single ended)power supply available for and op amp circuit I am designing. I want it to be very precise around zero volts for an output. I already though about using a virtual ground, ...
1
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1answer
3k views

Scaling DC voltage 0v-3.3v to 0v-5v

Can someone help me with voltage scaling? I've seen some Logic Level Converters from SparkFun but time is matter so I cant wait to get those shipped. I found a topic here: Scaling DC Voltage [0V-6.5V] ...
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2answers
167 views

Video scaling vs Display scaling

I am going to start a project in FPGA and "graphical screen" scaling. I am still in the "reading-the-material-phase". Are there any differences between video-scaling and display(e.g. Windows Desktop)-...
3
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3answers
367 views

What is a ‘dense integrated circuit’ or ‘integrated function’ and how does it relates to Area in Moore’s law?

I am very comfortable with the usage of the Moore's law and its impact on microelectronics. However I had always associated Moore's law to the gate length scaling as a factor of square root of 2 every ...
4
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2answers
3k views

How to scale and shift voltage signal?

I want to scale and shift my voltage signal by below relation: $$ V_{out} = \frac {10} {12} \cdot V_{in} - 10 $$ Indeed my primary voltage is from 0v to 24v and I want to put it from -10v to +10v. ...
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0answers
42 views

What MCU-type hardware is needed to read 12-110MHz pixel data from a video decoder? [duplicate]

The goal is to display PAL/NTSC (576i/480i) video on 32x16 RGB LED matrix. Scaling down the video is thus needed. From that point it is fairly easy – 32x16 image used to drive the matrix. I have ...
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2answers
47 views

is there a way to relate a frequency to other frequency by some circuit or mcrocontroller

A circuit that outputs a fraction of the input frequency controlled by some micro-controller or electronic circuit or component. Say I am feeding the said circuit ...
1
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3answers
219 views

Scaling amplifier, analog switch, fast response

simulate this circuit – Schematic created using CircuitLab Hello everybody, I just try to design a scaling amplifier with different slopes and offsets. The problem is that the transient ...
1
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1answer
191 views

Scaling a car's injector pulses to count and time them?

What would be an efficient way to reshape a car's injector pulses to digital 0-3.3V pulses, so a microcontroller can count and time them? The waveform can be seen on this page under "Example waveform"....
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1answer
187 views

Whole board design scaling in EAGLE 7.5.0 (free version)?

I have designed a very simple PCB in EAGLE that should be approximately W: 10mm, L: 30mm in size. This design is repeated 18 times (I need many of them). However, for some reason, the whole PCB is ...
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1answer
1k views

LTSPICE - Scale dimensions

I want to specify the scaling factors for my mosfet dimensions. How do I do it ? I am following some beginner tutorials but they have done everything in HSPICE. I use LTSPICE. And LTSPICE doesnt seem ...
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3answers
116 views

Relation between Voltage & frequency in DVS

As per Wiki - "In DVS, Overvolting is done in order to increase computer performance" How Overvolting will increase performance?? Also, it says " By applying a higher voltage to the devices in a ...
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2answers
5k views

scaling a voltage down using op amp

I have already looked and found similar things but still couldn't solve my own problem. I have an input voltage of 9V to 11V and I want to scale it to 0V to 5V. It's better if it is linear but it's ...
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2answers
8k views

Eagle printed PCB scale problem

I have made a layout using eagle then save it as PDF to print a test paper before routing. I didn't design any package its all eagle's packages. I exported PDF as shown on the image but the problem ...
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2answers
150 views

IF signal amplify without delay

I have a RF Frontend that has an 4 IF signal output (2 I channel and 2 Q channel from 2 receiving anettans). Each channel of the IF has a signal rangining from 1.5V to 3.5V with a DC offset of 2.5V. ...
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1answer
234 views

Multiplex based autoscale, question on simple circuit

I was looking for a clever way to automatically scale voltages from, say, 0-50V with a mux to an ADC (0-5V) without worry of damaging my inputs. My thought a simple amplifier with selectable gains ...
3
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1answer
856 views

Why is BJT scaling not as significant as MOSFET scaling?

When reading about integrated circuits, MOSFET scaling comes up very often, however BJT scaling is never discusses. What's the reason for this?
2
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1answer
947 views

How to scale output of FIR filter implemented in VHDL

For a DSP school project we need to implement sound effects in a SPARTAN 6 FPGA using VHDL. We tried to keep it simple and start off with a simple (100Tab) FIR filter. As coefficients we used those ...
2
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2answers
428 views

When does Direct Source-Drain tunneling become a problem?

Because of the probabilistic nature of quantum mechanics, direct source-drain tunneling is bound to happen as a result of CMOS scaling. The smaller the transistors become, the more tunneling occurs. ...
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3answers
670 views

Combined ADC level shift/offset and scaling

I'm trying to sense the voltage from a 2 cell Li-ion battery that has a usable range from 2.5 to 4.4 Volts per cell (nominal 3.0 - 4.2 V). The ADC I have has a range from 0 - 1.8 V and is 12 bits. I ...
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2answers
3k views

Simple DC voltage scaling with two ranges, lower range voltage limited

I am attempting to monitor DC voltages that can range from 0 to 250V with a micro controller. A simple voltage divider should be suitable for the broad range up to 250V, with somewhat coarse ...
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3answers
3k views

arduino thermal anemometer

I've been trying to use my arduino as a thermal anemometer based on the excellent and tiny IST FS5 "thermal mass flow sensor" - there is more information and a datasheet here - http://uk.farnell.com/...
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3answers
8k views

Converting/scaling a voltage range ([0v - 5v] to [-5v - +5v])

Can anyone explain how one would convert one voltage range to another? I'm going to need to convert a range of 0 to +5 volts into a range of -5 to +5 volts. How would this be accomplished? Thanks!