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its used to measure any automothive circuit
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What is used to measure impedance?
an ohm meter concerning electrical impedance
How can the basic d'arsonval meter movement be used to measure high-amplitude currents?
The basic d'arsonval meter movement be used to measure high-amplitude currents by placing a very low resistance across it. For instance... Let's say you want a 100 Amp meter. You have a 50 microamp meter with an impedance of 250 ohms. That means you need 99.99995 amps in parallel with 50 microamps across 250 ohms. (50x10-6)(250) = (99.99995)(x) X = 0.000125 ohms Note: At 100 amperes, that resistor is going to dissipate only 1.25 watts, but you are going to need to use fairly substantial cabling, because 0.000125 ohms is a very small value compared to the impedance of even ordinary pieces of wire.
Impedance of electric circuit?
The impedance of electric circuit refers to the measure of the opposition that a circuit presents to a current when a voltage is applied.
What means Impedance?
To get all the audio voltage from a source to a target without loss you need voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is at least ten times higher then the output impedance.An input impedance is called also a load impedance or an external impedance.An output impedance is called also a source impedance or an internal impedance.
What are the characteristics of instrumentation amplifier?
a high common mode rejection ratio, high impedance
What is used to measure impedance?
an ohm meter concerning electrical impedance
What is the system used to measure?
an ohm meter concerning electrical impedance
What is internal impedence of digital multimeter?
A: [practically all commercial digital meter have a 11 mega ohm input impedance but there are special meters that can be used to measure leakage current and they have impedance high enough to measure nano amps. Even an oscilloscope will have these kinds of impedance such that the reading is not influenced by external loading
When you prove a voltage to be induced using a Simpson why does the input impeadance on the different voltage scales produce different readings for the amount of voltage?
One possibility is that the accuracy of the Simpson is different on the different scales. Another (more probable) possibility is that the impedance of the Simpson on the different scales is sufficiently different so as to affect the reading. This is a common issue with low impedance multi-meters. Lets say you are using a typical Simpson meter with 20,000 Ohms per Volt. On a three volt scale, that means the meter itself has an impedance of 60,000 Ohms. On a 60 volt scale, however the meter has an impedance of 1,200,000 Ohms. Depending on the circuit impedance, that can have a significant impact on the final reading, which must be taken into consideration. Look at the equation for parallel resistance: RT = R1R2 / (R1+R2). If the meter impedance changes the circuit impedance by more than, say, 5%, that is going to affect the observed value. (You pick the percent limit - it depends on the situation.) Even for the case with a high impedance meter, say a 10,000,000 Ohm Digital Multi-meter, impedance must be considered if the circuit impedance is high enough. (I have a WWVB receiver that requires a 1,000,000,000 Ohm voltmeter to correctly measure the AGC voltage - no ordinary digital multimeter will suffice.)This does not mean that you have to spend lots of money on a high performance, high impedance, meter. You simply have to consider what the impedance of the meter is going to do to the circuit, and calculate that impact, before you state the results.
What is Vector meter?
A vector impedance meter is used to measure impedance and phase angle, this is done by calculating voltage and current through an impedance and then calculating Z and phase angle with that, now there are two modes for operation i.e constant current mode and constant voltage mode.CONSTANT CURRENT MODERead more: What_is_vector_impedance_meter_explain_with_circuit_diagram
In measurements made using a Q meter high impedance elements should preferably be connected in?
Delta connection
How do you measure speaker impedance?
The real impedance is the resistance in ohms more 20%. A coil resistance of 6,7 ohms X 1.20 = an impedance of 8.04 ohms. If the voice-coil had exactly 8 ohms, the impedance would be 9.6 ohms and the sound would be unclear, tending to more basses.
In a multistage amplifier input impedance is high and output impedance is low justify the statement?
no. input impedance is low & output impedance is high
Why emitter follower preferred to transforms as a impedance matching?
because it has high input impedance and low output impedance
How is voltage measured?
Use a voltmeter with a high input impedance and measure at the source the voltage.
How can you measure high resistance?
using a high resistance-ometer ANSWER: Some commercial voltmeter have an input impedance of 11 mega ohms So instead of measuring across the resistance you may put the meter in series that will give you a voltage drop due to current that can be calculated to find the other resistance
How i can measure sound frequency from sound level meter?
You just need a meter that measure Hertz (high and low) as well as db (volume)
