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How can you make an electronic device that will buzz only if you separate it from the base unit to a distance after 3 meters probably work using frequency?
Wiki User
∙ 18y ago
To create a device such as this one would chose a freguency is of a clear band width (avoid the upper frequency FM range) and mke the transmitter sufficiently weak that the signal would practically fade out in 3 meters. It is also possible to check the signal strength on the receiving circuit though this is prbably more sophisticated then need be as if you sufficiently under power, via gues nd check you should obtain the desired range.
Wiki User
∙ 18y ago
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What is the definition of genetic distance?
The "distance" or similarity between the allelic frequency of two separate populations. *Usually the two populations are separated over a significant geographic distance.
Why does every radio station have a different carrier frequency?
That's not exactly true. Any frequency you choose has several radio stations on it,but just not in the same city.Frequency is what your radio uses to separate the individual stations. If two stationsin the same city transmitted on the same frequency, your radio couldn't separate them.When you tuned to that frequency, you'd hear both of them at the same time, and youcouldn't understand either one.Listen to the 27 MHz 'Citizen's Band' some time.
What are the advantages of frequency shift keying?
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What is the double conversion receiver?
A type of superheterodyne radio using two separate mixers, each producing its own intermediate frequency. The block diagram of such a receiver is like this: RF -> M1 -> IF1 -> M2 -> IF2 -> D -> AF
You need a sample code of word frequency count in c plus plus?
For this you will need a node structure that stores a word and its frequency. The frequency is initially 1 (one), and the constructor should just accept the word. You then create a list from this structure. As you parse the text, extract each word and search the list. If the word does not exist, push a new structure for the word onto the list, otherwise increment the frequency for the word. When you've parsed the file, you will have your frequency count for each word in the list. The basic structure for each node is as follows (you may wish to embellish it further by encapsulating the word and its frequency). struct node { std::string m_word; unsigned long long m_freq; node(std::string wrd): m_word(wrd), m_freq(1) {} }; When parsing your text, remember to ignore whitespace and punctuation unless it is part of the word (such as contractions like "wouldn't"). You should also ignore capitalisation unless you wish to treat words like "This" and "this" as being separate words.
What is the definition of genetic distance?
The "distance" or similarity between the allelic frequency of two separate populations. *Usually the two populations are separated over a significant geographic distance.
What is frequency domain modulation?
Do you mean FDM or Frequency Division Multiplexing? If so, FDM is the division of a high frequency carrier into separate non-overlaping bands to be modulated by separate inputs. It's the modulation of several low frequency channels onto a high frequency carrier. Voice channels are low bandwidth inputs relative to the broadband carrier used to broadcast them.
Why does LED light not separate after passing through a prism?
If the light is a pure color, just one frequency, then there is nothing to separate.
What is threshold frequency in photoelectric effect?
It's the frequency at which each photon has the amount of energy required to separate an electron from an atom in the target substance.
Does a 1998 EL Falcon have an electronic key?
it should have a remote which is separate from the key.
If a wave has a low frequency does it have a short wavelength?
The product of (frequency) x (wavelength) is always the same number ... the speedof the wave. So the lower frequencies must have longer wavelengths.
What does it mean when mars is unusually bright?
It probably means it is near to its closest approach to Earth. The distance between Earth and Mars varies a lot as they go around the Sun in their separate orbits.
What is bi-wiring of speakers?
This is where the low-frequency driver, or woofer, is wired to a separate amplifier than the high-frequency driver or drivers. Also called bi-amping.
Why does every radio station have a different carrier frequency?
That's not exactly true. Any frequency you choose has several radio stations on it,but just not in the same city.Frequency is what your radio uses to separate the individual stations. If two stationsin the same city transmitted on the same frequency, your radio couldn't separate them.When you tuned to that frequency, you'd hear both of them at the same time, and youcouldn't understand either one.Listen to the 27 MHz 'Citizen's Band' some time.
After going with someone for 10 years will you ever get married?
Probably not. Something will probably separate you.
Why should we separate the core losses?
separation of core losses are necessary to determine core losses at diffrent frequency.........
Advantages of frequency domain over time domain?
advantage is that if we represent a composite signal in frequency domain........then we clearly see that how much signals are involved in composite signal and their separate peak values
