load impedance sentence in Hindi
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- In most circuits, this problem is easily overcome by selecting a load impedance at least two orders of magnitude greater than the bias resistance.
- Alternatively, the above formula can be rearranged to express the input impedance in terms of the load impedance rather than the load voltage reflection coefficient:
- Errors in phase are also important especially in power measuring circuits, and each class has an allowable maximum phase error for a specified load impedance.
- Although, for a given appropriate source and load impedance, RF amplifiers can be characterized as amplifying voltage or current, they fundamentally are amplifying power.
- A constant output voltage is required in many power supply applications, but the voltage provided by many energy sources will vary with changes in load impedance.
- However, an amplifier with a low internal impedance delivers more electrical output power when the load impedance reduces ( until the impedances become approximately matched ).
- They use a narrow tuned circuit to provide the valve with a suitably high load impedance and feed a load that is typically 50 or 75 Ohms.
- This can be ensured by making the load impedance equal to Z 0, in which case the transmission line is said to be " matched ".
- The leakage reactance ( usually about 5 to 10 % of the full load impedance ) helps limit both the magnitude and rate of rise of the fault current.
- Then very little current flows, and the voltage-divider effect with the load impedance imposes on the collector point a high voltage very near to V cc.
- In addition to output impedance, other specifications are relevant to choosing a headphone amplifier output power, minimum load impedance, and other measurements are also significant.
- These formulae apply to a doubly terminated filter ( that is, the source and load impedance are both equal to unity ) with & omega; c = 1.
- As the first rheostat increases in resistance, the second rheostat decreases in resistance, keeping the load impedance ( presented at the input of the L pad ) constant.
- The phase angle difference between voltage and current of each phase is not necessarily 0 and is dependent on the type of load impedance, " Z " y.
- To circumvent this, some power supplies use a linear voltage regulator to maintain the output voltage at a steady value, independent of fluctuations in input voltage and load impedance.
- And yes, they need an external source of electrical power to begin working, although with the right load impedance they'll keep themselves powered-up after that.
- Certain ribbon and dynamic microphones are exceptions, due to the designers'assumption of a certain load impedance being part of the internal electro-acoustical damping circuit of the microphone.
- For vacuum tube amplifiers, impedance-changing transformers are often used to get a low output impedance, and to better match the amplifier's performance to the load impedance.
- However typical RF sources such as transmitters and signal generators are designed to look into a purely resistive load impedance such as 50? or 75?, corresponding to common transmission lines'characteristic impedances.
- Specifically, a 3-input NOR gate may consist of 3 bipolar junction transistors with their emitters all grounded, their collectors tied together and linked to V cc through a load impedance.
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