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searching for MicroVolts 51 found (58 total)

alternate case: microVolts

Gain (electronics) (1,364 words) [view diff] case mismatch in snippet view article

different units; in such cases the gain units must be specified, as in "5 microvolts per photon" for the responsivity of a photosensor. The "gain" of a bipolar

Voltmeter (1,295 words) [view diff] case mismatch in snippet view article find links to article

series resistor. Meters using amplifiers can measure tiny voltages of microvolts or less. Digital voltmeters give a numerical display of voltage by use

Burst noise (445 words) [view diff] case mismatch in snippet view article find links to article

or more discrete voltage or current levels, as high as several hundred microvolts, at random and unpredictable times. Each shift in offset voltage or current

S meter (971 words) [view diff] case mismatch in snippet view article find links to article

or 0.40 microvolts RMS in 50 ohms on HF. A strong signal with signal strength of S8 corresponds to received power of -79 dBm or 25 microvolts RMS in 50

Evoked potential (5,224 words) [view diff] case mismatch in snippet view article find links to article

be low, ranging from less than a microvolt to several microvolts, compared to tens of microvolts for EEG, millivolts for EMG, and often close to 20 millivolts

Electroretinography (1,249 words) [view diff] case mismatch in snippet view article find links to article

amplitude (voltage). Signals are very small, and typically are measured in microvolts or nanovolts. The ERG is composed of electrical potentials contributed

Signal strength in telecommunications (1,282 words) [view diff] case mismatch in snippet view article find links to article

systems, such as mobile phones, signal strength is usually expressed in dB-microvolts per metre (dBμV/m) or in decibels above a reference level of one milliwatt

T wave alternans (2,043 words) [view diff] case mismatch in snippet view article find links to article

component of the EKG. The amount of variation is small, on the order of microvolts, so sensitive digital signal processing techniques are required to detect

Weston cell (430 words) [view diff] case mismatch in snippet view article find links to article

type today. However, an unsaturated cell's output decreases by some 80 microvolts per year, which is compensated by periodic calibration against a saturated

SCR-694 (674 words) [view diff] case mismatch in snippet view article find links to article

kilohertz. RF sensitivity in phone operation, 5 microvolts. RF sensitivity in CW operation, 3 microvolts. Selectivity 3 to 6 kilohertz. Receiver frequency

Seebeck coefficient (4,340 words) [view diff] case mismatch in snippet view article find links to article

coefficient is volts per kelvin (V/K), although it is more often given in microvolts per kelvin (μV/K). The use of materials with a high Seebeck coefficient

Neonatal seizure (4,791 words) [view diff] case mismatch in snippet view article find links to article

abnormal, paroxysmal, and persistent ictal rhythm with an amplitude of 2 microvolts in the electroencephalogram,. These may be manifested in form of stiffening

Noise (electronics) (2,201 words) [view diff] case mismatch in snippet view article

or more discrete voltage or current levels, as high as several hundred microvolts, at random and unpredictable times. Each shift in offset voltage or current

Input offset voltage (443 words) [view diff] case mismatch in snippet view article find links to article

commercial-grade op-amp integrated circuits (IC). This can be reduced to several microvolts if nulled using the IC's offset null pins or using higher-quality or laser-trimmed

Ernst von Fleischl-Marxow (1,055 words) [view diff] case mismatch in snippet view article find links to article

tissues have extremely low levels of electrical activity (in the range of microvolts), neurophysiology's progress had to wait for them. Like many German physiologists

Explorer 43 (3,533 words) [view diff] case mismatch in snippet view article find links to article

analog/digital converter every 0.64-seconds. The DC sensitivity was 100 microvolts per meter. This experiment, as originally defined by NASA Headquarters

Virtual ground (559 words) [view diff] case mismatch in snippet view article find links to article

enough voltage to reduce the potential difference between the inputs to microvolts. More precisely, it can be shown that the output voltage of the amplifier

2CM (657 words) [view diff] case mismatch in snippet view article find links to article

reasonable 20 dB extra loss, the signal level would be well below 0.5 microvolts, a challenging level for modern radio receivers. While heterodyne detection

Explorer 45 (1,865 words) [view diff] case mismatch in snippet view article find links to article

into an 80-dB logarithmic detector with a measurement sensitivity of 10 microvolts/m. The wideband receiver was an automatic gain control receiver with a

Low frequency (2,427 words) [view diff] case mismatch in snippet view article find links to article

an alternative to these requirements, a field strength of 2400/F(kHz) microvolts/meter (measured at a distance of 300 meters) may be used (as described

Watt (3,283 words) [view diff] case mismatch in snippet view article find links to article

often stated in dBf (decibels referenced to 1 femtowatt). This is 0.2739 microvolts across a 75-ohm load or 0.5477 microvolt across a 300-ohm load; the specification

Title 47 CFR Part 15 (1,578 words) [view diff] case mismatch in snippet view article find links to article

broadcast band (88 to 108 MHz) are limited to a field strength of 250 microvolts per meter (~48 dBμ) measured at a distance of 3 meters. This corresponds

Nerve conduction study (2,764 words) [view diff] case mismatch in snippet view article find links to article

amplitude, sensory latency, and conduction velocity. The SNAP amplitude (in microvolts) represents a measure of the number of axons conducting between the stimulation

Pyranometer (2,665 words) [view diff] case mismatch in snippet view article find links to article

coating surface and the instrument housing. This is of the order of 10 μV (microvolts) per W/m2, so on a sunny day the output will be around 10 mV (millivolts)

Effective radiated power (3,325 words) [view diff] case mismatch in snippet view article find links to article

relates to AM broadcasting only, and expresses the field strength in "microvolts per metre at a distance of 1 kilometre from the transmitting antenna"

Kelvin–Varley divider (1,270 words) [view diff] case mismatch in snippet view article find links to article

thermocouple). While these unwanted voltages are small, on the order of a few microvolts per °C, they can cause appreciable errors at the high accuracy of which

AN/URM-25 signal generator (524 words) [view diff] case mismatch in snippet view article find links to article

amplitude modulation selectable at 400 and 1,000 Hz. RF level from 0.1 microvolts to 100 millivolts or 2 volts is available depending upon termination load

Diversity combining (1,925 words) [view diff] case mismatch in snippet view article find links to article

received signal level from a 90-watt, 42 MHz. mobile radio dropped from 45 microvolts (a solid signal) to nothing in one driving mile of road. See: "Section

Auditory brainstem response (3,371 words) [view diff] case mismatch in snippet view article find links to article

amplitude/latency function. ASSR uses a statistical analysis. ABR is measured in microvolts (millionths of a volt) while ASSR is measured in nanovolts (billionths

Contingent negative variation (2,228 words) [view diff] case mismatch in snippet view article find links to article

imperative stimulus will be. The maximum amplitude is usually around 20 microvolts. The scalp distribution of the CNV is further influenced by the specific

Magnetic cartridge (1,688 words) [view diff] case mismatch in snippet view article find links to article

is correspondingly small. The resulting signal is only a few hundred microvolts, and thus more easily swamped by noise, induced hum, etc. Thus it is more

2200-meter band (1,826 words) [view diff] case mismatch in snippet view article find links to article

field strength measured 300 meters from the antenna may not exceed 2,400 microvolts per meter divided by the frequency in kilohertz, or approximately 17 μV/m

Neon lamp (3,024 words) [view diff] case mismatch in snippet view article find links to article

exhibit comparable sensitivity (of the order of a few 10s to perhaps 100 microvolts) to the familiar 1N23-type catwhisker-contacted silicon diodes[citation

Drude model (6,198 words) [view diff] case mismatch in snippet view article find links to article

thermopowers at room temperature are 100 times smaller, of the order of microvolts. Proof together with the Drude errors From the simple one dimensional

Radio receiver (5,271 words) [view diff] case mismatch in snippet view article find links to article

the minimum signal strength of a station at the antenna, measured in microvolts, necessary to receive the signal clearly, with a certain signal-to-noise

N400 (neuroscience) (3,099 words) [view diff] case mismatch in snippet view article

a 100 ms pre-stimulus baseline. Its amplitude can range from -5 to 5 microvolts. However, it is important to note that in studies using the N400 as a

List of North American broadcast station classes (3,544 words) [view diff] case mismatch in snippet view article find links to article

long as their signal strength does not exceed roughly 14 to 45 μV/m (microvolts per meter) (depending on frequency) at a distance of 30 meters (98.4 ft)

Brain–computer interface (16,451 words) [view diff] case mismatch in snippet view article find links to article

smaller, existing at hundreds of microvolts. Further adding to the challenge of detecting signals on the scale of microvolts is the fact that the electrode-tissue

Antenna (radio) (10,948 words) [view diff] case mismatch in snippet view article

then the antenna would deliver 12 pW of RF power to the receiver (30 microvolts RMS at 75 ohms). Since the receiving antenna is not equally sensitive

Bioelectromagnetic medicine (1,679 words) [view diff] case mismatch in snippet view article find links to article

evoked potential (EP) amplitudes tend to be low, ranging from tens of microvolts for EEG, millivolts for electromyography (EMG), and about 20 millivolts

Thermocouple (6,982 words) [view diff] case mismatch in snippet view article find links to article

gradient, along the wire. A thermocouple produces small signals, often microvolts in magnitude. Precise measurements of this signal require an amplifier

Sense (10,760 words) [view diff] case mismatch in snippet view article find links to article

sensors. These electroreceptors can detect electric fields as weak as 4.6 microvolts per centimeter, such as those generated by contracting muscles and pumping

Operational amplifier (10,087 words) [view diff] case mismatch in snippet view article find links to article

integrated circuit op amps, corresponding to +100 dB). Thus, even small microvolts of difference between V+ and V− may drive the amplifier into clipping

University Radio Essex (4,397 words) [view diff] case mismatch in snippet view article find links to article

Office requirement to limit field strength at the campus boundary to 100 microvolts per metre, and the presence of a strong signal on an adjacent channel

Superheterodyne receiver (6,632 words) [view diff] case mismatch in snippet view article find links to article

required. The output of the antenna may be very small, often only a few microvolts. The signal from the antenna is tuned and may be amplified in a so-called

Schumann resonances (6,192 words) [view diff] case mismatch in snippet view article find links to article

instruments is 3–100 Hz. The Schumann resonance electric field amplitude (~300 microvolts per meter) is much smaller than the static fair-weather electric field

SNDR (937 words) [view diff] case mismatch in snippet view article find links to article

needed to produce this is noted. In this case, it was found to be 0.25 microvolts. According to the radio designer, intelligible speech can be detected

Biofeedback (15,446 words) [view diff] case mismatch in snippet view article find links to article

is placed within six inches of either active. The SEMG is measured in microvolts (millionths of a volt). In addition to surface electrodes, clinicians

P3b (5,893 words) [view diff] case mismatch in snippet view article find links to article

specific time window. P3b amplitude is generally relatively large (10–20 microvolts), but varies systematically as a function of a number of important factors

Valve RF amplifier (4,465 words) [view diff] case mismatch in snippet view article find links to article

specified (see e.g., the Valvo, Telefunken or Philips data sheets) as 2 microvolts integrated over a frequency range of approximately 25 Hz to 10 kHz. (This

Valve audio amplifier technical specification (5,587 words) [view diff] case mismatch in snippet view article find links to article

specified (see e.g., the Valvo, Telefunken or Philips data sheets) as 2 microvolts integrated over a frequency range of approximately 25 Hz to 10 kHz. (This