The q meter uses in a laboratory for testing the radio frequency of the coils. A widerange oscillator with frequency range from 50 khz to 50 mhz is used as a power supply. How to use electrical symbols open edraw electrical diagram maker, and this large collection of symbols are found in the engineering category in the available templates list. The emeter soc is used to perform all metrology functions and sends active power results to the cc2530em addon board. Block diagram of uhf q meter showing external resonator connections. Check inductors with this simple q meter eeweb community. The practical circuit for measurement of quality factor shown in figure 1. In the example below, twelve 12 orifice meter runs were replaced by one 18 ultrasonic meter. Calculators for contractors, builders, remodelers, carpenters. The meter is accurate to within jul 11, 2017 from the above equation, if e is kept constant the voltage across the capacitor can be measured by a voltmeter calibrated to read directly in terms of q. Our flowchart maker aligns everything automatically so you dont have to worry about. The meter will read the money from the prepaid card and will recharge the meter. I dont know if its suitable here, but there are also ways with not wysiwygprogramms. Ti energy library firmware calculates all energy measurement parameters including active and reactive power and energy, rms current and voltage, power factor, line frequency, fundamental and thd readings.
Msp430f6736 singlephase metering soc with 3 sigmadelta adcs. Licensee shall ensure that it has obtained all necessary licenses and rights to use any such third party software toolsproducts which are necessary in order to utilize the content. Analog instruments lcr q meter, true rms meter, vector voltmeter, rf power and voltage measurement, electronic multimeter, amplified dc meter, ac voltmeter using rectifiers, vector impedance meter, output power meter, field strength meter, automatic bridge transmitter, analog ph meter, bolometer method for power measurement. The oscillator and tuning capacitor adjust to the desired. The quality factor is one of the parameters of the oscillatory system, which shows the relation. For qipc models, download and install the st configurator and q programmer software applications. Easy flowchart maker free online flow chart creator. An open source frequency meter and clock generator open. For many years, the q meter has been an essential piece of equipment for laboratories engaged in the testing of radio frequency circuits. No licenses or rights to any such third party softwaretoolsproducts are granted to licensee by on semiconductor. Normally tex is used for texts and professional scriptum, but also good looking vector graphics are possible, with a little effort.
Created from the groundup, q sys is a software based platform built around an open itfriendly ecosystem. The measurement of dc quantities will be done by exciting the bridge with dc voltage. If youve never used an stm23 drive before youll need to get familiar with the drive and the set up software before you try to deploy the system in your application. The unknown frequency signal is fed to the schmitt trigger. Created from the groundup, qsys is a softwarebased platform built around an open itfriendly ecosystem. The following description refers to the circuit diagrams in the theory section above. Circuit diagram, working principle and its applications. Working principle of a q meter, electrical engineering. Licensee shall ensure that it has obtained all necessary licenses and rights to use any such third party softwaretoolsproducts which are necessary in order to. The audio on the priority channel is then mixed to the outputs in place of, or louder than, the attenuated audio refer to the diagram below. These electrical symbols are smart, industrial standard and vectorbased for electrical schematic diagrams.
Note that during calibration you will be monitoring the meter values only to. The hp431c power meter indirectly measures microwave frequency power by using two bridge circuitsthe detection bridge. Please include a block diagram and dont draw it on paper. Labview program in ni software national instruments. The wide range oscillator, with frequency range from 50 khz to 50 mhz, delivers current to a resistance r sh having a value of 0.
A tuned circuit, at resonance, is considered to have a q factor. The priority ducker is used to attenuate one or more channels of audio input when the audio input of a priority channel reaches a specified threshold. No licenses or rights to any such third party software toolsproducts are granted to licensee by on semiconductor. The design site for hardware software, and firmware engineers.
We can choose the meter reading in volt range or decibel range. Portable medical instruments such as blood glucose meter, digital blood pressure meter, blood gas meter, digital pulseheart rate monitor or even a. They are used to represent various electrical and electronic devices or functions. It still would be nice to have a little stand alone unit. At the 2010 dayton hamvention, i took the plunge into the sdr world and purchased a perseus receiver. Aug 24, 2009 read about block diagrams texas instruments medical meters. You start by picking one of the flow chart templates included and add steps in just a few clicks. Q meterrlc meter group members najeeb ullah naveed khan 2. Q meter is design for measuring the q factor of a coil and for measuring inductance, capacitance and resistance of an electric circuit at radio frequency. Functional block diagram of digital frequency meter working principle of digital frequency meter 1. In a schmitt trigger, the signal is converted into a square wave with a very fast rise and fall times.
Figure 3,functional block diagram of the boonton q meter. Q meter circuit diagram working principle impedance. The ability to create this block diagram form of documentation efficiently seems to be highly relevant to digital design. While lcr meters are readily available at reasonable cost, they do not measure the q of an inductor. Circuit block diagram software version power of the. Q meter working principle and construction electronic. The above block diagram clearly defines the connection diagram of the lcr meter. Vintage test equipment teardown boonton 260a and hp q meters duration. Qmeter we know that every inductor coil has a certain amount of resistance and the coil should have lowest possible resistance.
We finally have all the elements to describe the internal design of the fpga that we have divided into parts for simplicity, the first block diagram is the actual frequency counter, while the second one represents the driver for the 12 inch display. Pasternacks library rf and microwave block diagram are designed to provide engineers and designers with examples of common rf systems schematics while illustrating the rf products and where they fit into the systems design. The following figure shows the block diagram of superheterodyne wave analyzer. Behringer x32 digital mixer user manual pdf download. My goal is to answer any question anyone may have about a q meter, what it is for. For qipc models, download and install the st configurator and q. After you start edraw, click the icon of basic electrical symbols to open the stencil that includes all shapes for making circuit diagrams drag the shape that you need directly onto the canvas. From the above equation, if e is kept constant the voltage across the capacitor can be measured by a voltmeter calibrated to read directly in terms of q. It consists of an oscillator which works in the frequency range of 50 khz to 50 mhz. Measurement of q the circuit used for measurement of q is shown in the figure. A jpeg picture file showing mechanical details of the daughterboard. The block schematic diagram of a q meter is shown in figure.
On the contrary, the ac measurements require excitation of the wheatstone bridge with ac signal. Flowchart software for making flowcharts and other process charts. Use a graphics program to make the image larger or smaller so it will be right. View and download king meter swlcd user manual online. Read about block diagrams texas instruments medical meters. What is the best software to draw control block diagram.
Working principle and construction of q meter video lecture of measurement of capacitance chapter in subject electronic instrumentation and measurement for electrical, electronics, extc. The signal may be amplified before being applied to schmitt trigger. The hp431c power meter indirectly measures microwave frequency power by using two bridge circuitsthe detection bridge and the compensation and metering bridge. A practical q meter circuit diagram is shown in fig. The instrument which measures the storage factor or quality factor of the electrical circuit at radio frequencies, such type of device is known as the qmeter. Electrical engineering assignment help, working principle of a q meter, q. The wave analyzer, used to analyze the signals of rf range is called superheterodyne wave analyzer. Sound card lcr meter miniapp with esr, df, and q daqarta.
This instrument determines the q quality factor of a resonant circuit, crystal. We know that every inductor coil has a certain amount of resistance and the coil should have lowest possible resistance. The perseus directsampling sdr receiver by adam farson, va7ojab4oj. Digital instruments microprocessor controlled bridges, digital readout. I agree that a computer might be the easiest way to output the results. For providing ac excitation, the oscillator is used in the circuit. A widerange oscillator with frequency range from 50 khz to 50 mhz is used as a power supply to the circuit. Some attempt to alter the characteristics of the load by adding capacitance, halfwave rectified loads, or instantaneous high currents. Flowchart software for making flowcharts and other process charts smartdraw is the easiest way to make any type of flowchart or diagram representing a process. Since acquiring this fascinating little radio, i have been evaluating it on the air and have also conducted an exhaustive lab test suite on it.
A q meter is a piece of equipment used in the testing of radio frequency circuits. The frequency counter represented in figure is divided again in four stages. Im writing my thesis and i am searching for good software to draw control block diagrams. In the boonton 160 and 260 q meters the oscillator operates from 50 khz to 50 mhz. It was developed at boonton radio corporation in boonton, new jersey in 1934 by william d. Printed circuit track pattern for autotrax pcb viewed from bottom a jpeg picture giving drilling details for the pcb groundplane. It uniquely leverages the power of intel processing, the robustness and mission critical reliability of a linux operating system, and the interoperability of ieee networking standards. The principle of this meter mainly depends on series resonance because the voltage drop is q times than the applied voltage across the capacitor otherwise coil. Analog instruments lcrq meter, true rms meter, vector voltmeter, rf power and voltage measurement, electronic multimeter, amplified dc meter, ac voltmeter using rectifiers, vector impedance meter, output power meter, field strength meter, automatic bridge transmitter, analog ph meter, bolometer method for power measurement. Standard electrical symbols for electrical schematic diagrams.
The following is the electrical interface circuit for the meter. Msp430f6736 singlephase metering soc with 3 sigmadelta. There is a boonton model 190 which i have never seen in the flesh that covers from 20 mhz to 250 mhz. So it introduces almost no resistance into the oscillatory circuit.
If the voltage applied across the circuit is keptconstant then voltmeter connected across the capacitor can be calibrated to indicate q directly. It has been largely replaced in professional laboratories by other types of impedance measuring device, though it is still in use among radio amateurs. The ratio of the inductive reactance to the effective resistance of the coil is called the quality factor or qfactor of the coil. The qmeter operates on the principle of series resonance i.
Exact or evenly adjusted spacing, with running placement mark out lists. Admittedly, there might need to be an ic buffer to make the meter work correctly, so there may be some subblocks missing in the block diagram. Others may bypass the meter, wholly or in part, which can cause an increase in the ac current flowing through the meters neutral terminals. The operations of this useful laboratory instrument is based on the familiar. The output of the oscillator is shorted by a lowvalue resistance, r sh usually of the order of 0. It also explains the properties of the coil and capacitor. Also explain the factors that cause errors during a q factor measurement. Mar 18, 2018 functional block diagram of digital frequency meter working principle of digital frequency meter 1.
The q meter measures the quality factor of the circuit which shows the total energy dissipated by it. The value of the shunt resistance may be typically 0. View and download behringer x32 digital mixer user manual online. Smartdraw is the easiest way to make any type of flowchart or diagram representing a process. The power driver stage is preceded by an emitter follower stage v1. The oscillator drives a current through a low value of resistance r sh. Concrete rebar calculator rebar spacing, length and weight. Draw the hardware architecture block diagram of the above described electronic parking metering system.
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