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to detect maximum peak os AC signal and convert to DC signal

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What is peak detector?

a device which output voltage is almost the real peak valueof an applied signal


What are applications of peak detector?

Amplitude measurementAutomatic gain control Data regeneration


What difference between pda and uv detector in hplc?

PDA - Photo diode array UV- Ultra violet with use of PDA detector, we can measure the area or height of particular peak at different wavelengths ranging from 200 to 800 nm by injecting the solution at once. Where as in uv detector we can measure the area or height of the peak only at two different wavelengths. But that wavelengths also to be selected before injecting the solution.


What is quasi peak?

Most radiated and conducted limits in electromagnetic compatibility (EMC) testing are based on quasi-peak detection mode. Quasi-peak detectors weigh signals according to their repetition rate, which is a way of measuring their "annoyance factor." They do this by having a charge rate much faster than the discharge rate. Therefore as the repetition rate increases, the quasi-peak detector does not have enough time to discharge as much, resulting in a higher voltage output (response on spectrum analyzer). For continuous wave (CW) signals, the peak and the quasi-peak response are the same. The quasi-peak detector also responds to different amplitude signals in a linear fashion. High amplitude low repetition rate signals could produce the same output as low amplitude high repetition rate signal. Quasi-peak detector readings will always be less than or equal to the peak detection. Because quasi-peak readings are much slower, (by 2 or 3 orders of magnitude compared with peak) it is very common to scan initially with the peak detection first, and then if this is marginal or fails, switch and run the quasi- peak measurement against the limits.


Why does peak height decrease with increase in concentration in HPLC?

In High-Performance Liquid Chromatography (HPLC), peak height decreases with increasing concentration due to the phenomenon of detector saturation. As the concentration of analytes increases, the detector may reach a point where it can no longer accurately measure the peaks, leading to a plateau or reduction in peak height. Additionally, higher concentrations can lead to non-linear responses and band broadening, further affecting the resolution and height of the peaks. This behavior highlights the importance of operating within the linear dynamic range of the detector for accurate quantification.


What is the peak of Fentanyl patch?

The peak of pain relief provided by the Fentanyl transdermal system is between 12 and 18 hours after application.


What is the deadline to fill out the peak performance application for UCCS?

Nov 15 2012


When was the inventor of the metal detector born?

the metal detector was invented because people in old days use to use it so they could find stuff in there body I think


What is the effect of detector temperature on retention time?

Compounds injected onto a column interact with the column material. Some compounds "stick" to the column more than others. These compounds then have a long retention time. Heating increases the kinetic energy of the compounds on the column. This increased energy allows the molecules to wiggle free from the column more easily. So heating reduces the "stickiness" of the molecules. Since molecules will "stick" less, they will move more quickly through the column, and their retention times will decrease.


State 5 type of temperature measuring devices other than thermocouple with its application?

RTD - Resistence temperature detector Thermistor Pyrometer Thermometer


What has the author K Svanholm written?

K. Svanholm has written: 'Gamma thermometer and neutron detector application' -- subject(s): Neutron counters, Themometers and themometry