Questions tagged [sensitivity]

The sensitivity (or responsivity) of an electronic device or system, such as transistors, amplifiers, communications systems, represents the minimum magnitude of an input signal needed in order to provoke an output signal.

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25 views

Sensitivity of half and quarter wheatstone bridge

Could anyone help me determining the different relation for sensitivity of wheatstone half-bridge and quarter-bridge using transfer function? How differently varies the sensitivity between diverse ...
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Calculate actual power of speaker

I have a sound system: 8 speakers, 1 amplifier (4 channels). Speakers were connected in parallel. I want to calculate actual power on each speaker. Specifications: 8 speakers: Woofer (4): Power: ...
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Why does the high capacitance of a metal oxide varistor affect sensors and signal sensitivity?

I want to know why the high capacitance of metal oxide varistors affects sensors, signal sensitivity. How does capacitance affect sensitivity ? If we add a low capacitor in series will the total ...
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limitations on control effort

I am looking at loop shaping design of a control system, and I'm focusing my attention of the control effort. I have seen that it can be identified with a function called control sensitivity function ...
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Doubt on how to do well done loop shaping of a control system

I am studying control systems, and I have some arguments that are not clear. In particular I am studying the loop shaping design using H- infinity controller designed with muxed sensitivity, in SISO ...
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42 views

How to determine LVDT sensitivity?

I performed an experiment using an LVDT where I used a generator voltage of 4.84V. I determined the secondary voltage at the beginning position, obtaining 2.48V and at the end (displacement os 22.5 cm)...
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29 views

how to increase the sensitivity of a home-built locked in amplifier?

I am building a locked in amplifier from scratch for an optoelectronic device using a couple of boards in conjunction with the STEM Redpitaya. The System configuration is as follows: Signal(coming ...
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25 views

Sensitivity analysis question

I am trying to figure out how to calculate the sensitivity of a circuit, especially the sensitivity of a damping ratio (how much the damping ratio changes as each component value varies). Expression ...
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46 views

Reading and interpreting output sensitivity of a load cell from data sheet

I'm given these ratings /spec for load cell / sensor: Range: 0-200kg Output sensitivity: 0.7 ± 0.15mV / V Nonlinear: 0.05% F.S Hysteresis: 0.05% F.S Repeatability: 0.05% F.S Creep: 0.05% F.S/3min ...
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52 views

What sensitivity of reed switch should I use?

For my GCSE Engineering project, I am building a device which attaches to the frame of a bike, and uses a magnet (Attached to the wheel) to detect 1 turn of the wheel (I have also compensated for ...
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115 views

Antenna communication [closed]

How could I determine if 2 antennas could communicate knowing the distance between them, the power/gain of transmitting/receiving, and the sensitivity level of the receiver?
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Sensitivity (or responsitivity?) of an electrochemical sensor - Definition

I read a paper about an electrochemical sensor where there is the term sensitivity expressed in ampere. What is its definition? I found a IUPAC definition here, but the units are ampere/watt or volt/...
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213 views

Measure sensitivity of ADC

I would like to benchmark my ADC. I can calculate a sensitivity value based on the information in the datasheet. However, I would like to measure/benchmark this figure. Is there a standard method ...
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Estimating the adequate ADC resolution given a sensor resolution

A force traducer has a resolution of 0.0625N. And the analog output sensitivity is 32N/V. So I calculate the voltage output resolution as 0.0625/32 which is around 2mV. If this signal now is sampled ...
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136 views

Ultra-low power sound/audio sensor for LOUD noises

I'm searching for a sound/audio sensor with ultra-low power consumption to detect the presence of a really loud noise (100dB+). The controller runs on battery and there is no option for a different ...
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92 views

Definition of \$ \frac{mm}{Ampere}\$ (unit of current sensitivity)?

I want to know how \$ \frac{mm}{Ampere}\$ (which is the unit of current sensitivity of PMMC instruments) is defined? i.e, How \$ mm \$ is defined in terms of \$ degrees\$ ? For eg.: \$ \frac{rad}{...
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273 views

IR circuits: increasing sensitivity of simple analog receiver IR LED

I have the following circuit using a TSOP1738 and a simple IR receiver LED (analog): It's basically: a TSOP1738 put to my 5V uC pin, its OUT being read directly by the yellow channel of my ...
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315 views

What is “Vop” sensitivity unit?

I am studying the datasheet of an ultrasonic transducer (Murata MA58MF14). I understand the maximum input voltage unit (voltage peak-to-peak), but I do not understand what exactly the sensitivity unit ...
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226 views

Evaluating 741 op amp sensitivity to loading in non-inverting and summing op amp circuits

I am doing lab preparation but I am not sure how to evaluate 741 amplifier sensitivity to loading based on my non-inverting circuit with a gain of 21 and my summing circuit with a gain of 55. I know ...
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267 views

Relation between bandwidth, response time and disturbance rejection for a control system

I read the following line in a control system book: Higher bandwidth corresponds to better command following, disturbance rejection and sensitivity to parametric variations. On the other hand, ...
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Reading a transducer sensitivity from its datasheet

How can I calculate the sensitivity of this transducer? I also read at a text "The sensitivity is typically rated in terms of mV/g or pC/g, it is valid only at one frequency, conventionally at 100 Hz."...
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384 views

Best microphone picking up sound within a small room?

I've tried several Electret Condenser Microphones as input to a generic USB audio sound card: MO064202-4 MO064402-4 MO064402-5 All mics work great at close range (about 1 or 2 inches). However, none ...
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183 views

nRF24L01+ module channel sensitivity and directivity

I want to start a project where I distribute many nRF24L01+ modules across the house. I am pretty sure someone has done that before. But before I wanted to begin I evaluated the modules using two ...
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889 views

wcs1800 current sensor (with sensitivity of 66mV/A) output voltage varies unexpectedly with a range of 10 - 20mA

I am using wcs1800 sensor to read current in the range of 100mA to 30A, even though the sensor has a sensitivity of ~66mV/A (5V input) and ~50mV/A (3.3v input) the output voltage is varied in the ...
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423 views

Relationship between offset in electrical angle and BLDC motor performance

I am controlling a BLDC motor using Field Oriented Control (FOC). I use a 14-bit absolute encoder to read the rotor's position \$\theta_{m} \$, and use it to reconstruct the electrical angle \$\theta_{...
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Characterization of RF Amplifier Chain

I am using a 3 Amplifiers chain for a Receiver system. The required Output is -32dBm while the sensitivity of the system is -55 dBm, I am able to achieve this. But the maximum I/P power for the ...
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97 views

Receiver Sensitivity

Receiver has noise figure 4 dB and ENBW 3.6 MHz. Used with antenna with noise temperature 200 K. Demodulator needs S/N of at least 13 dB. What is the receiver sensitivity? Give your answer in dBm, ...
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2k views

How to compute the sensitivity of this control system?

I am learning control systems on my own and am having some trouble understanding how Richard C. Dorf and Robert H. Bishop found \$S^{T}_{G}\$ in Modern Control Systems (12th edition): The problem: ...
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497 views

Influence of active area of photo diode on sensitivity

I am using a photodiode for detecting the laser. I have a question regarding the active area of the photodiode. Is less active area photodiode is less sensitive? Or it totally depends on the laser ...
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65 views

Why radio exhibits better sensitivity with a wider deviation when Rx bandwidth remains constant

I used an RF generator transmitting FSK packets with a datarate of 50 kbps. The deviation was 12.5 kHz. With this combination of datarate and deviation the modulation index is 0.5. I found that my ...
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500 views

Understanding digital MEMS microphone sensitivity and obtained bits for a given input SPL

I'm trying to understand /simulate the communication between 2 smartphones by means of ultrasounds. As this is a general study I'm considering that the smartphones are equipped with the "typical" most ...
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1k views

Can I connect multiple electret microphones for better gain?

Is it possible to connect multiple electret microphones in order to increase sensitivity (gain) of the microphone(s)? If yes, how do I connect them? Update: Obviously one solution is to increase the ...
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98 views

Noise figure of Microwave radio receiver

I always wondered why ADC is not considered for noise figure measurement in receiver chain? Do ADCs will not have much impact on noise figure in signal processing? How to derive a Noise figure spec ...
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How to reduce sensitivity of a Hall Effect Sensor?

In a mechanism with strong magnets, I want to use a Hall Effect Sensor to get the position of the magnets. The sensor move between two magnets in inverse polarity, so the field is minimum in on side, ...
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118 views

IC's sensitivity

I'm trying to make an AM receiver using a certain IC (it's Samsung KA22427C, if you ask). I found a datasheet and in AM section of electrical characteristics there is entry for maximum sensitivity ...
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582 views

proteus pcb design - arranging sensitivity

I am so new in designing pcb, My problem is : putting buttons horizontally at the same level, What I do is : putting 2 buttons side by side, But they are not exactly at the same level, there is a ...
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What's the difference between sensitivity and resolution of an SMU?

In Keithley's Low Level Measurements Handbook, 7th ed the two terms are defined as: SENSITIVITY - the smallest change in the signal that can be detected. RESOLUTION - the smallest portion of ...
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108 views

sensitivity of ultrasound transducer related to output

Can any one explain to me how is the sensitivity of an uktrasound head related to the Output pressure Level?
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77 views

Forensics: electrostatic detection circuit for lifting “indentations” from documents

Wikipedia explains that an EDD: ...is a specialized piece of equipment [used to] reveal indentations or impressions in paper which may otherwise go unnoticed. The electro-physical basis whereby ...
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141 views

Lowering the output of high amp current sensor for low amp use - good or bad?

By increasing the value of burden resistor or turning the wire several times around the CT an output can be increased. But is it a good practise to lower the high current non-invasive current sensor ...
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167 views

Vacuum dessication of MSL components?

The standard method of removing moisture from MSL-sensitive SMD components prior to reflow is to bake in an oven for 12 hours or more. Without baking, there is a possibility of popcorning, as the ...
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224 views

minimum detectable signal of an IMU (MPU 6050)

I want to work with the MPU 6050 IMU, but before I have to check, which minimum detectable signal the IMU can measure or rather what is the lowest change of angle the IMU can measures. I have the ...
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999 views

US5881 Hall Effect sensor not detecting AC field

Yesterday I was disappointed to learn there is no magical IC to measure current flow in a standard appliance cord. On the advice I received, I went ahead with a US5881 Hall effect sensor and split ...
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Why is analog “voltmeter sensitivity” is defined as ohm/Volt?

What is the motivation to define a sensitivity of an analog voltmeter as ohm per voltage?
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What Colors or wavelengths are Photoresistors sensitive to?

Using a LDR or Photoresistor, are they more sensitive to one color or wavelength compared to another? Or are they consistent with any light? Why?
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143 views

EDIT: Dropping voltage of high frequency signal using diodes

I have a high frequency analog signal that has to be as noiseless as possible, say no ripple of a few millivolts? Now, I need to bring it down by almost 9V. Is it reasonable to simply use a zener or ...
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529 views

Normalize values from different MEMS 3-axis accelerometers

I have to find a solution to uniform values on 3-axis accelerometers on different android devices. I mean, a device with a specific accelerometer, subjected to the same acceleration, return values, ...
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1answer
339 views

Maximum achievable SNR (SNR before LNA)

I am trying to understand the concept of noise figure and the best achievable SNR. The noise figure is a measure how much a device degrades the SNR. Say I have a receiver with a NF of 16dB, then the ...
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173 views

Why is my piezo so innacurate? Is it just insensitive? [closed]

I'm trying to make a sound level display, simply to tell the user how loud nearby sounds are. The issue is this data, which I collected in a near silent environment (it's night, and I can't make out ...
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2k views

Sensitive or not sensitive gate? [closed]

If there is nothing about it in the datasheet, how can I find out if it is a sensitive or not sensitive gate?