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Www.engineer.tamuk.edu/cleung/EEEN4252/2_Schmitt Trigger RC Oscillators.pdf. Index of /~jstiles/622/handouts. Index of /~jstiles/622/handouts Name Last modified Size Description Parent Directory -

Index of /~jstiles/622/handouts

Jitter & the Digital Interface. Until recently, all problems in digital audio systems were blamed on either the analog/digital converters (ADCs) used in mastering or the digital/analog converters (DACs) needed for playback (footnote 1).

Jitter & the Digital Interface

As the performance of both ADCs and DACs improved, however, a previously unrecognized mechanism for distortion was unmasked: jitter. As we shall see, jitter—or, more correctly, word-clock jitter—can be a significant limitation in the technical and sonic performance of digital audio systems (footnote 2). This article is a primer on jitter in digital audio. We will look at what jitter is, its causes, effects, and how jitter can be reduced. Radio Astronomy Telescope Project. Radio Astronomy for Scientists Teachers and Students. ChemHacker. EME, SETI, Radio Astronomy and DSP for Radio Amateurs (W6/PA0ZN) Basic Electronics Circuit diagrams. Wave Bubble. Two Wavebubbles.

Wave Bubble

Left is an earlier revision with the top removed and with external antennas. Right is v1.0 with internal antennas, fit into a pack of cigarettes. This website details the design and construction Wave Bubble: a self-tuning, wide-bandwidth portable RF jammer. The device is lightweight and small for easy camouflaging: it is the size of a pack of cigarettes. An internal lithium-ion battery provides up to 2 hours of jamming (two bands, such as cell) or 4 hours (single band, such as cordless phone, GPS, WiFi, bluetooth, etc). Output power is .1W (high bands) and .3W (low bands). Self-tuning is provided via dual PLL, therefore, no spectrum analyzer is necessary to build this jammer and a single Wave Bubble can jam many different frequency bands - unlike any other design currently available!

While the documentation here is both accurate and complete (as much as possible), the construction of such a device is still an advanced project. What's your dream job? 410-244 - DIGILENT - ANALOG DISCOVERY DESIGN KIT. List of trigonometric identities. These identities are useful whenever expressions involving trigonometric functions need to be simplified.

List of trigonometric identities

An important application is the integration of non-trigonometric functions: a common technique involves first using the substitution rule with a trigonometric function, and then simplifying the resulting integral with a trigonometric identity. Notation[edit] Angles[edit] 1 full circle = 360 degrees = 2 radians = 400 grads. The following table shows the conversions for some common angles: Unless otherwise specified, all angles in this article are assumed to be in radians, but angles ending in a degree symbol (°) are in degrees. Trigonometric functions[edit] The primary trigonometric functions are the sine and cosine of an angle.

The Sine of an angle is defined in the context of a Right Triangle, as the ratio of the length of the side that is opposite to the angle, divided by the length of the longest side of the triangle (the Hypotenuse ). Inverse functions[edit] and Related identities[edit] Conversion between dBm - dBW - W and dBuV - dBV - V. Decibels (dB) are used to express power ratios in a logarithmic way, so that very large and very small powers can be compared using comfortable numbers.

Conversion between dBm - dBW - W and dBuV - dBV - V

A decibel is a dimensionless pseudo-unit because it's defined on the ratio of two powers. But since decibels are so handy, there is also a way to express power (and not just a ratio) with them: with decibel-milliwatts (dBm) and decibel-watts (dBW). The most common unit is the dBm which is the power ratio relative to one milliwatt. Sometimes also dBW are used and they express the power ratio relative to one Watt. To convert dBm into dBW simply subtract 30.

Enter one value (either in dBW, dBm or W) and click the "Convert" button next to it to compute the two other values. Especially when dealing with receiving antenna, it's common in some domains (like analog TV antennas) to measure the voltage instead of the power. Enter one value (either in dBV, dBuV or V) and click the "Convert" button next to it to compute the two other values. P. Www.ti.com/lit/an/slyt090/slyt090.pdf.