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Questions tagged [conditioning]

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Pulse signal conditioning with a LM311

I am trying to design a sensor to read the pulses on my electricity meter. The meter has 1 LED that gives 1000 pulses / KWh. Each pulse is 30ms in width. I am using a phototransistor and a LM311 to ...
Dan Corneanu's user avatar
1 vote
1 answer
314 views

How do I read a load cell just with this data?

I have a load cell (capability = 23 kg or 50 lb.) Its output is 2 mV/V. I have read that that means 2 mV per each excitation volt. The power connection of this load cell is +15V-GND, so 0.002 * 15 = ...
wertyu's user avatar
  • 33
4 votes
0 answers
60 views

Battery Maintainers

I have a bunch of non-rechargeable batteries I've kept in stock & haven't used almost at all (almost fresh off the packaging). Like all tools/equipment I have, I expect them to last me as long as ...
Tempus Nomen's user avatar
1 vote
1 answer
365 views

How to interpret the analog output of this humidity sensor?

I have been given a humidity sensor to work with and the only info I have is an AliExpress listing that says that it's based on the HR202L sensor. The datasheet of the HR202L shows that its resistance ...
k.h's user avatar
  • 103
1 vote
1 answer
86 views

Digital input conditioning?

I'm designing a schematic with opto-coupled digital inputs (BNC). For better noise/ground loops immunity/reflections should I add 50 ohm resistors on both input lines, signal(+) and GND, along a ...
Mr No's user avatar
  • 71
0 votes
1 answer
406 views

Calculating AC Unit Watts

I'm trying to calculate the watts used from my AC unit. Below I am including my sticker label that's on the AC Unit along with a electrical data sheet I found online for my model. So far this is ...
Kayracer's user avatar
2 votes
1 answer
55 views

I want to start by doing a circuit analysis of the triferential subtractor

I want to understand the circuit of the triferential subtractor: in the context of Anderson loop based signal conditioning, found in this resource here. This is just an inverting amplifier with a ...
Abeer's user avatar
  • 53
3 votes
0 answers
80 views

Isolating low-current, low-voltage digital signals

I'm working with a battery-powered sensor that allows reading its measurements using two digital signals - a clock and a data line. The clock speed is abount 3kHz. In addition to those two signals, ...
Florian Ragwitz's user avatar
1 vote
4 answers
665 views

Removing noise from the speed sensor of a motorcycle

I am trying to make a digital dashboard for a motorcycle using a Raspberry Pi, a display and some sensors. I am using this speed sensor. When I put the sensor on the axis of the motor wheel and run ...
mina's user avatar
  • 111
1 vote
2 answers
950 views

Is a resistor trimmer a good idea for adjusting the gain of an op amp circuit?

I'm designing this circuit to measure temperature with PT100. R10 must be calibrated to obtain the desired gain. I have thought of using a resistor trimmer to adjust the gain similar to the following:...
Fabián Romo's user avatar
2 votes
2 answers
212 views

Multiplex temperature signals through one conditioning circuit

I'm planning on designing a PCB that takes numerous analog temperature sensor input signals and convert them using an Analog to Digital Converter (ADC) to be read by a computer. The signals need to go ...
jmvk's user avatar
  • 21
-1 votes
2 answers
82 views

Any suggestions regarding this image i shared where a specific output voltage is required to specific input. No microcontroller should be used

Please see this image. As you can see from 0 to 999mV the output should be 0 to 100mV(this can be achieved easily) but when the input changes from 999 to 1000 and further the output should be from ...
Raj Kiran's user avatar
0 votes
2 answers
232 views

three points (two slopes) op amp conditioning circuit

I'd like to get the output on the right when applying the signal on the left to a signal conditioning circuit using op amps. I've got different slopes so I guess I need two amplifier circuits with ...
dodod's user avatar
  • 137
0 votes
2 answers
415 views

Current transformer with additional multi-turn winding for test purposes

Some explanations for the circuit below: This is a CT with 1000 turns secondary. It has high sensitivity down to mA levels so that's why I put an amplifier given that the burden is small (35 ohms). ...
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0 votes
0 answers
133 views

Understanding Ac coupling in this circuit

I'm simulating the circuit below in LTspice and there's something I don't get regarding C3 and C4. Suppose the input signal is a 32 uArms 60Hz current as shown. This value multiplied by the burden ...
user avatar
0 votes
1 answer
85 views

Making sense of non ideal elements on signal conditioning circuit

So I was trying to solve a problem where I would get an input signal of 230V,16A@50Hz and the output had to be the same frequency but in the rage of 0V and 5V. Through the analysis of the circuit ...
Bidon's user avatar
  • 289
0 votes
0 answers
104 views

Interfacing CT signal to Arduino

I want to interface the following CT to Arduino: So I have the following data: Primary Current: 600 Arms Secondary current: 5 Arms Burden: 2 VA Burden = 2 VA means that: Rmax = P/I^2 = 2/25 = 0.08 ...
user avatar
0 votes
1 answer
80 views

Optical displacement sensor noise and current to voltage conversion

I'm currently involved in a project with the aim of measuring the tremor of mice limbs (displacements of about 100 um). The sensor my group has chosen is TCRT5000 (Vishay), but we are facing several ...
Gufetto's user avatar
  • 11
0 votes
0 answers
84 views

Alternatives to relay to conditioning a circuit

I got a "problem" and it is because of my lack of knowledge so I need your help. First, the current design is like the attached below this paragraph. The power comes from a car battery (24v or 12v), ...
RataDP's user avatar
  • 101
0 votes
1 answer
71 views

Current sensing using XADC

AC701 Schematics Refer page 40 of the schematics. Here for Vccint- the regulator is switching at 250 kHz. page 34 has the sensing signal conditioning for that the inst. amp used is INA333 which ...
seeker's user avatar
  • 121
4 votes
0 answers
501 views

Signal conditioning for piezo shock-sensor digital input

I have a piezo element glued to a piece of material, and I want to get a digital signal (to drive an interrupt on an Arduino) when something strikes the material. So, there's a certain noise floor on ...
Toby Eggitt's user avatar
2 votes
3 answers
1k views

Why do designers use op-amps with fractional gains?

I often find designs like the following simulate this circuit – Schematic created using CircuitLab Where the gain is less than one (\$\ R_2/R_1 < 1\$) Why not simply use a resistive ...
Edgar Brown's user avatar
  • 8,466
1 vote
2 answers
364 views

How to condition a NTC of very low resistance?

I want to use a temperature sensor which changes its resistance. For 0 degrees celsius its resistance is 0.5325 ohms and for 40 degrees celsius it is 3.264 ohms. Obviously putting it in series with ...
Fabián Romo's user avatar
0 votes
2 answers
116 views

Ideas to smooth variable AC voltages/spikes reported to ADC circuit

I’m trying to integrate a 40+ year old ac motor and remote controller with a device using modern ADC controllers to remotely manage the motor turning process. The legacy gear is an old CDE Ham-M ...
Jim McDermott's user avatar
0 votes
1 answer
67 views

Two-wire switch sensor

I've been researching how to design a circuit for a two-wire switching sensor. It can be operated as a PNP or NPN switch. I need to design a circuit to detect whether the sensor is switched or not. ...
Hasan alattar's user avatar
0 votes
3 answers
593 views

ADC Signal conditioning. Transform 1V-4V to a 0V-5V signal, how can I do it?

Hi im doing a project for college and I got some doubts about signal conditioning. Im using a SS49E, hall sensor and, from what I have seen in the data sheets, the analog output gives values between ...
Nuno Nogueira's user avatar
0 votes
2 answers
1k views

How to limit the maximum output of ADC Signal Conditioning Circuit

So I have been designing an Op-Amp ADC signal conditioning circuit. I ended up with the following: So, for nearly all parts this is a completely working circuit including: 1) The Gain 2) Bandwidth (...
Zaid Al Shattle's user avatar
1 vote
2 answers
805 views

Amplify DC output from CT circuit

I am new to your forum although I often read it and find great help. I have a problem that I cannot resolve. I am using a 5A CT (1000:1) to measure 110VAC (50Hz) currents of 70 to 90mA which gives me ...
user avatar
0 votes
2 answers
3k views

Connecting multiple signals to ADC

I am designing a signal conditioning circuit which reads in data from 20 sensors and output it to the ADC of a microcontroller. My problem is I don't really understand how to connect these signals ...
Christopher's user avatar
1 vote
1 answer
2k views

Op amp signal processing of an accelerometer output for an ADC

I have been designing a board which will monitor vibration activity of a machine using MEMS accelerometers. So far, I have connected the unadulterated signal from the accelerometer to the ADC however, ...
BaartCM's user avatar
  • 11
3 votes
1 answer
1k views

What is "conditioning of a capacitor"?

I got a flash for my DSLR camera: A mecablitz 52 AF-1 digital Canon with multi-language manual from here. In section 15.2 (page 187 for english), it states: 15....
sweber's user avatar
  • 8,670
4 votes
4 answers
3k views

Microcontroller input conditioning

I have the following circuit to condition signals reaching my microcontroller's pins. This circuit reads both digital signals in the range 0 to 30V, and analog signals in the range 0 to 3.3V. ...
Fotis Panagiotopoulos's user avatar
0 votes
1 answer
574 views

Signal conditioner for a piezoresistive pressure sensor

I have an instrumentation amplifier which output voltage equation is given.The piezoresistive pressure sensor in Figure E3.12 consists of a bridge of four silicon strain gages of 4000 ohm and 1 mV ...
user avatar
1 vote
2 answers
1k views

Type J Thermocouple Signal Conditioning to 0-5V

I've been working with signal conditioning, thermocouple out specifically. I'm working with a span of 450 °C, that is, from -50 °C to 400 °C. For those values of temperatures I get, according to the ...
user avatar
0 votes
2 answers
3k views

Arduino signal conditioning

I'm doing a project with an Arduino. I read a voltage from a tachometer connected to a generator. The nominal max output is 21V at 1000 rpm. The generator is managed so that the maximum tachometer ...
Federico Munerotto's user avatar
0 votes
1 answer
140 views

Conditioning input signal range for sensor

I have piezo sensor which outputs around 1mV of signal. I am using an already build analog front end to measure the signal, with Vcc = 5V and Vss = 0V. To measure the signal, the front end has ...
zud's user avatar
  • 1,866
0 votes
2 answers
10k views

Determining the parameters of a Wheatstone bridge

I am trying to use a Wheatstone bridge to condition a thermistor. The arrangement I have is shown below: simulate this circuit – Schematic created using CircuitLab I have the following ...
HappyFeet's user avatar
  • 105
1 vote
1 answer
3k views

Help for VR sensor signal conditioning (variable reluctance signal conditioning)

im trying create a CDI/TCI unit for my Suzuki Bandit GSF400. i need some help for VR sensor signal conditioning section. this is the disc that generate the pulse signal. i have found this image from ...
SAM's user avatar
  • 111
0 votes
1 answer
91 views

Confusion with output wiring and signal conditioning

I’m little confused about wiring and signal conditioning the following instrument: http://www.skypowerinternational.com/uploads/documents/4.3351.x0.140-161_WG-Geber-firstclass-advanced_analog_eng.pdf ...
user16307's user avatar
  • 12.1k