Electrical Engineering Stack Exchange
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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.

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.

Sensitivity's units will then vary with the device/system studied.

More valuable information in Wikipedia.

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In terms of costs of mass production: is it better to try to reduce resistances' tolerance or capacitors' tolerance?

So I am doing a small project of optimization of components tolerance to reduce the impact of circuit sensitivity to meet a project specification. Right now I am with 5% resistors and inductors and 3% capacitors. My question is if there is a common…
Granger Obliviate
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How to compare a magnetic loop antenna to a conventional antenna

I want to build a compact 1 MHz receive coil (antenna for very near field). For that I need to make a choice on whether to build a simple RF coil only consisting of wire and capacitors or using a coil with a ferrite core. I found materials that have…
Fulix
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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 of them would pick up any sound at ranges further…
Hari Wiguna
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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?
user16307
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What colors or wavelengths are photoresistors sensitive to?

Using an LDR or photoresistor, are they more sensitive to one color or wavelength compared to another, or are they consistent with any light? Why?
Passerby
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Understanding optical parameters of image sensors

I noticed that image sensor manufacturers provide some optical characteristics in different formats. I wish to know how to interpret that information. Sensitivity is characterized in \$\dfrac{V}{lx \cdot s}\$ for S11639 and TCD1201, which is…
Nazar
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Verilog odd behavior with multiple edge detect

So I'm a newbie to Verilog. I decided to purchase a nice board (a Terasic DE0-CV) and teach myself some Verilog. And I'm seeing some strange behavior that I can't explain. I lifted some code out of an example that drives the 7-seg LEDs. And I…
BoredBsee
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BeagleBone Black - power supply sensitivity

I've bought a AC/DC adapter which per its specifications should output 5VDC and deliver 3A. I was going to use this adapter to power my BeagleBone Black (BBB) with. However, when I'm measuring the output from the adapter while it's idle (not…
InquisitiveMonkey
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How do I calculate sound pressure level (dB SPL) from headphones at a specific setting on my sound card?

I am using headphones with sensitivity 102 dB SPL / 1 Vrms with impedance of 300 ohms. For a particular volume knob setting on my sound card embedded with a headphone pre-amplifier, I would like to determine the output in dB SPL from the…
Tanmayee Pathre
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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 Arduino UNOs and noticed two things: Despite the…
kwasmich
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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 number of amplifiers, but I am curious if multiple…
Gabriel
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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, Zero in the middle and maximum in the other…
Adrian Maire
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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 the conductors. I then passed only one of the…
Roberto
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Image Sensor sensitivity

I am not sure what really the term "sensitivity" means when characterizing image sensors, so I will describe what I am looking for in the sensor at the following conditions: the exposure time is very short the intensity if light is very…
Nazar
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Trying to relate microphone sensitivity and SPL

In this: I don't understand equation 3. How does 20·log10(...) - 94 dB = SPL? If I did the example and solved the equation for 70 dB, I would get something around: 10(70+94)/20 · 6.3 · 10-3 = 998483 V The result doesn't seem to make any sense and…
Scipio
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