Characteristic Impedance Measurement
... other. When this need arises, the principle of termination is used. Termination can be done either in series or in parallel or a combination of both. ...
... other. When this need arises, the principle of termination is used. Termination can be done either in series or in parallel or a combination of both. ...
output - Innovetech
... systems. In many of these applications, it is desirable for the rectifier to appear as a resistor at its ac input port. However, for a given dc output voltage, the input impedance of a resonant rectifier varies in magnitude and phase as output power changes. This paper presents a design methodology ...
... systems. In many of these applications, it is desirable for the rectifier to appear as a resistor at its ac input port. However, for a given dc output voltage, the input impedance of a resonant rectifier varies in magnitude and phase as output power changes. This paper presents a design methodology ...
(a) Quarter-Wave Transformer
... Let ZL = (100+ j 85), nd the minimum d and l that will reduce the VSWR of the main line to 1. Assume that Z0 = 50. We nd that the normalized load ZnL = 2 + 1:7j as shown on the Smith Chart. Since this problem involves parallel connections, it is more convenient to work with admittances. YnL = Z ...
... Let ZL = (100+ j 85), nd the minimum d and l that will reduce the VSWR of the main line to 1. Assume that Z0 = 50. We nd that the normalized load ZnL = 2 + 1:7j as shown on the Smith Chart. Since this problem involves parallel connections, it is more convenient to work with admittances. YnL = Z ...
Quiz 3 Solutions
... external power-supply leads? Add a power supply decoupling capacitor from the power supply lead to ground at the point where the lead connects to the circuit. See Figure 4-17. (b) How is undesirable feedback on the power supply leads between stages of a high-gain amplifier prevented? Isolate the sta ...
... external power-supply leads? Add a power supply decoupling capacitor from the power supply lead to ground at the point where the lead connects to the circuit. See Figure 4-17. (b) How is undesirable feedback on the power supply leads between stages of a high-gain amplifier prevented? Isolate the sta ...
Impedance cardiography (ICG) is a non-invasive method to - IITB-EE
... same or another pair of electrodes, gets amplitude modulated due to the impedance variation. This voltage is demodulated to get the impedance signal [4], [5]. In order to avoid any physiological effects, a low-level current (<5 mA) in the frequency range of 20 kHz to 1 MHz is used. In this frequency ...
... same or another pair of electrodes, gets amplitude modulated due to the impedance variation. This voltage is demodulated to get the impedance signal [4], [5]. In order to avoid any physiological effects, a low-level current (<5 mA) in the frequency range of 20 kHz to 1 MHz is used. In this frequency ...
introduction to transmission lines
... 1- Assume the load is 100 + j50 connected to a 50 ohm line. Find coefficient of reflection (mag, & angle) and SWR. Is it matched well? 2- For a 50 ohm lossless transmission line terminated in a load impedance ZL=100 + j50 ohm, determine the fraction of the average incident power reflected by the loa ...
... 1- Assume the load is 100 + j50 connected to a 50 ohm line. Find coefficient of reflection (mag, & angle) and SWR. Is it matched well? 2- For a 50 ohm lossless transmission line terminated in a load impedance ZL=100 + j50 ohm, determine the fraction of the average incident power reflected by the loa ...
Combatting Signal Integrity Issues with FLXDrive
... When designing a high speed system that eliminates signal integrity issues, the goal is to match the source impedance to the impedance of the trace. This optimizes the stair step delay and ringing. This application note assumes a 50 ohm Z O and 1K ohm or greater load ...
... When designing a high speed system that eliminates signal integrity issues, the goal is to match the source impedance to the impedance of the trace. This optimizes the stair step delay and ringing. This application note assumes a 50 ohm Z O and 1K ohm or greater load ...
PHYS3610/6610 Electronics I – Final – Thursday December 10th
... d) [17 points] What is the minimal value of R B so the transistor functions as a switch in this circuit with I C =0.01A when the transistor is on? From the graph we see the base current I B must be greater than 60 A so we must have R B5V−0.6V/60×10−6=73.3k ...
... d) [17 points] What is the minimal value of R B so the transistor functions as a switch in this circuit with I C =0.01A when the transistor is on? From the graph we see the base current I B must be greater than 60 A so we must have R B5V−0.6V/60×10−6=73.3k ...
Technical Basics
... feeder has a lower loss than Coaxial cable This loss is both in Transmit and Receive modes. For some standard cables the loss is: ...
... feeder has a lower loss than Coaxial cable This loss is both in Transmit and Receive modes. For some standard cables the loss is: ...
Document
... Our voltage source also has a 377 ohm source impedance, divided into two resistors of 188.5 ohms each (Figure 2). When we turn the signal generator source on, a sine wave begins to propagate down the transmission line towards the load (Figure 2(b)). Since the characteristic impedance of the transmis ...
... Our voltage source also has a 377 ohm source impedance, divided into two resistors of 188.5 ohms each (Figure 2). When we turn the signal generator source on, a sine wave begins to propagate down the transmission line towards the load (Figure 2(b)). Since the characteristic impedance of the transmis ...
DN400 - True Rail-to-Rail, High Input Impedance ADC Simplifies
... and RTDs as shown in Figure 1. Thermocouple outputs produce very small changes (tens of microvolts per degree C) and the output will be negative if the thermocouple is colder than the “cold junction” connection from the thermocouple to the copper traces on the PCB. The RTD is measured by comparing t ...
... and RTDs as shown in Figure 1. Thermocouple outputs produce very small changes (tens of microvolts per degree C) and the output will be negative if the thermocouple is colder than the “cold junction” connection from the thermocouple to the copper traces on the PCB. The RTD is measured by comparing t ...
Amplifiers
... Continuous average sin wave power at < 0.05% THD, 20 Hz - 20 kHz 8 ohms = 240 W/ch 4 ohms = 400 W/ch Note that even though impedance has dropped by factor of 2, power does not quite double. ...
... Continuous average sin wave power at < 0.05% THD, 20 Hz - 20 kHz 8 ohms = 240 W/ch 4 ohms = 400 W/ch Note that even though impedance has dropped by factor of 2, power does not quite double. ...
Protection of the People and Equipments in the Electric
... To protect an electrical installation, we have to detect defects (overload, short-circuit, over voltage, decreases tension) [5, 8]. -Overload:this defect from an office that call too much power to the power line. This results in a current draw as the facility sees its temperature increase beyond its ...
... To protect an electrical installation, we have to detect defects (overload, short-circuit, over voltage, decreases tension) [5, 8]. -Overload:this defect from an office that call too much power to the power line. This results in a current draw as the facility sees its temperature increase beyond its ...
Nominal impedance
Nominal impedance in electrical engineering and audio engineering refers to the approximate designed impedance of an electrical circuit or device. The term is applied in a number of different fields, most often being encountered in respect of:The nominal value of the characteristic impedance of a cable or other form of transmission line.The nominal value of the input, output or image impedance of a port of a network, especially a network intended for use with a transmission line, such as filters, equalisers and amplifiers.The nominal value of the input impedance of a radio frequency antennaThe actual impedance may vary quite considerably from the nominal figure with changes in frequency. In the case of cables and other transmission lines, there is also variation along the length of the cable, if it is not properly terminated. It is usual practice to speak of nominal impedance as if it were a constant resistance, that is, it is invariant with frequency and has a zero reactive component, despite this often being far from the case. Depending on the field of application, nominal impedance is implicitly referring to a specific point on the frequency response of the circuit under consideration. This may be at low-frequency, mid-band or some other point and specific applications are discussed in the sections below.In most applications, there are a number of values of nominal impedance that are recognised as being standard. The nominal impedance of a component or circuit is often assigned one of these standard values, regardless of whether the measured impedance exactly corresponds to it. The item is assigned the nearest standard value.