RC cuircuit using oscilloscope
... We, connect the two oscilloscope across the capacitor as well as resistance to get the RC charactristics. If, the phase difference between Vc and VR is φ, then cosφ = VR = R Z . We obtain the value of current vs voltage characteristic of a capacitance. From this data, we plot impedance (Zc ) vs vol ...
... We, connect the two oscilloscope across the capacitor as well as resistance to get the RC charactristics. If, the phase difference between Vc and VR is φ, then cosφ = VR = R Z . We obtain the value of current vs voltage characteristic of a capacitance. From this data, we plot impedance (Zc ) vs vol ...
SAC SILK GlowMaster KT88 true balanced Class A Power Amplifier
... 100KHz, -1.25dB with very low harmonic distortion. Without the new development of SILK P-4200 balanced output transformer, the performance of true balanced circuit in New GlowMaster KT-88 cannot be fully realised. Other balanced push-pull amplifiers can produce very distorted waveforms at high frequ ...
... 100KHz, -1.25dB with very low harmonic distortion. Without the new development of SILK P-4200 balanced output transformer, the performance of true balanced circuit in New GlowMaster KT-88 cannot be fully realised. Other balanced push-pull amplifiers can produce very distorted waveforms at high frequ ...
lab6 - People @ EECS at UC Berkeley
... Reflections are a big problem in transmission lines. Signals traveling along a transmission line can reflect at the end of a wire and interfere constructively, causing large voltage spikes. When a transmission line is short, reflection does not play a major role. However, when the line is sufficient ...
... Reflections are a big problem in transmission lines. Signals traveling along a transmission line can reflect at the end of a wire and interfere constructively, causing large voltage spikes. When a transmission line is short, reflection does not play a major role. However, when the line is sufficient ...
Basic Audio Electronics Document
... Typical professional equipment uses level +4dBu (unloaded), which is 1.23V The German studio standard is +6dBu, which is 1.55V, but that does not mean all professional equipment provides such a high level Typical home/hifi equipment uses -10dBV, which is 0.316V For calculation of this type, see see ...
... Typical professional equipment uses level +4dBu (unloaded), which is 1.23V The German studio standard is +6dBu, which is 1.55V, but that does not mean all professional equipment provides such a high level Typical home/hifi equipment uses -10dBV, which is 0.316V For calculation of this type, see see ...
Constant Current Power Supplies
... A constant current supply functions as a regulated current source. It requires a change in thinking, to look at a supply that puts out a constant flow (current) regardless of the pressure (voltage). A Few Basics A theoretically perfect voltage generator would have zero internal impedance. A perfect ...
... A constant current supply functions as a regulated current source. It requires a change in thinking, to look at a supply that puts out a constant flow (current) regardless of the pressure (voltage). A Few Basics A theoretically perfect voltage generator would have zero internal impedance. A perfect ...
Wavepackets
... localized disturbances could move through space. (I have stuck with y as the waving quantity, but I want to encourage you to think of your favorite example – perhaps the electric field amplitude in a phone line.) The way that this works is that the single solution y(x,t) = y0 sin (kx-ωt) depends on ...
... localized disturbances could move through space. (I have stuck with y as the waving quantity, but I want to encourage you to think of your favorite example – perhaps the electric field amplitude in a phone line.) The way that this works is that the single solution y(x,t) = y0 sin (kx-ωt) depends on ...
XII. AC Circuits - Worked Examples - Mit
... (e) the impedance of the circuit when both switches are open, (f) the maximum energy stored in the capacitor during oscillations, (g) the maximum energy stored in the inductor during oscillations. (h) the phase difference between the current and the voltage if the frequency of the voltage source is ...
... (e) the impedance of the circuit when both switches are open, (f) the maximum energy stored in the capacitor during oscillations, (g) the maximum energy stored in the inductor during oscillations. (h) the phase difference between the current and the voltage if the frequency of the voltage source is ...
Standing wave ratio
In radio engineering and telecommunications, standing wave ratio (SWR) is a measure of impedance matching of loads to the characteristic impedance of a transmission line or waveguide. Impedance mismatches result in standing waves along the transmission line, and SWR is defined as the ratio of the partial standing wave's amplitude at an antinode (maximum) to the amplitude at a node (minimum) along the line.The SWR is usually thought of in terms of the maximum and minimum AC voltages along the transmission line, thus called the voltage standing wave ratio or VSWR (sometimes pronounced ""viswar""). For example, the VSWR value 1.2:1 denotes an AC voltage due to standing waves along the transmission line reaching a peak value 1.2 times that of the minimum AC voltage along that line. The SWR can as well be defined as the ratio of the maximum amplitude to minimum amplitude of the transmission line's currents, electric field strength, or the magnetic field strength. Neglecting transmission line loss, these ratios are identical.The power standing wave ratio (PSWR) is defined as the square of the VSWR, however this terminology has no physical relation to actual powers involved in transmission.The SWR can be measured with an instrument called an SWR meter. Since SWR is defined relative to the transmission line's characteristic impedance, the SWR meter must be constructed for that impedance; in practice most transmission lines used in these applications are coaxial cables with an impedance of either 50 or 75 ohms. Checking the SWR is a standard procedure in a radio station, for instance, to verify impedance matching of the antenna to the transmission line (and transmitter). Unlike connecting an impedance analyzer (or ""impedance bridge"") directly to the antenna (or other load), the SWR does not measure the actual impedance of the load, but quantifies the magnitude of the impedance mismatch just performing a measurement on the transmitter side of the transmission line.