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THS3201-EP
THS3201-EP

Charles Proteus Steinmetz
Charles Proteus Steinmetz

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... point n to point a, the circuit configuration is shown in Figure 7a and the equivalent circuit is shown in Figure 7b. When S1 is turned on the direction of current should be from point a to point n. However, due to the presence of inductance, the current cannot change its direction instantaneously a ...
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... The THS4211/5 may incorporate a PowerPAD™ on the underside of the chip. This acts as a heat sink and must be connected to a thermally dissipative plane for proper power dissipation. Failure to do so may result in exceeding the maximum junction temperature which could permanently damage the device. S ...
AD820 AnaDev, RRIO opamp 0.8uV 1.8MHz 5-36V.pdf
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... of ±2.5 V to ±18 V. It has true single-supply capability, with an input voltage range extending below the negative rail, allowing the AD820 to accommodate input signals below ground in the single-supply mode. Output voltage swing extends to within 10 mV of each rail, providing the maximum output dyn ...
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... The LT6600-10 requires 2 equal external resistors, RIN, to set the differential gain to 402Ω/RIN. The inputs to the filter are the voltages VIN+ and VIN– presented to these external components, Figure 1. The difference between VIN+ and VIN– is the differential input voltage. The average of VIN+ and V ...
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... The maximum safe power dissipation in the AD8065/AD8066 packages is limited by the associated rise in junction temperature (TJ) on the die. The plastic encapsulating the die will locally reach the junction temperature. At approximately 150°C, which is the glass transition temperature, the plastic wi ...
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... measure the ripple voltage a CRO is needed. If the CRO setting is on DC, the full voltage graph will be seen showing the ripple around the average value. However in a well designed circuit, the ripple voltage will be very small. To see the ripple on the CRO, you first switch the CRO to AC, in which ...
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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.
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