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The theoretical value of the output resistance of the single-tube amplifier circuit

The theoretical value of the output resistance of the single-tube amplifier circuit

2026-07-02 09:03
1 answer

1. **共射放大电路** - 对于单管共射极放大电路,输出电阻\(R_{o}=R_{c}\)。 2. **共集放大电路(射极跟随器)** - 其输出电阻\(R_{o}=R_{e}//\frac{(R_{b} + r_{be})}{(1+\beta)}\)。 3. **共基放大电路** - 输出电阻\(R_{o}=R_{e}//\frac{(R_{b} + r_{be})}{(1+\beta)}\)。 点击前往免费阅读更多精彩小说

Discussion and conclusion of single-tube AC amplifier circuit

The related conclusions and discussion of the single-tube AC amplifier circuit are as follows: * * 1. In terms of static work points ** 1. * * Important ** - The setting and adjustment of the static working point was crucial. A reasonable setting can make the amplifier work stably and reliable. To obtain the maximum undistorted voltage, the static operating point should be located at the middle of the AC load line. In order to stabilize the operating point, certain conditions must be met, such as <BQ>> II <I21>. 2. * * Calculation Method ** - The static operating point can be calculated by a specific formula, such as <R = U21UU> II>, or <<CBBBQE + RR1EBEQBQEQCQR-CQCCQR>-UE= I <EcCQCreERCCEQ + RR-I = E-U-U = EUbeI = ICQBQ>. The calculation involved the parameters of various components in the circuit, such as the base power supply, bias resistance, collector power supply, collector resistance, etc. These components interacted to determine the state of the static operating point. - The static working point can be measured with the Model MT-47 Multimeter. * * 2. Dynamic parameters ** 1. * * Calculation of voltage amplification and input and output resistance ** - The voltage amplification factor is related to the input and output resistance calculation, and the calculation result is usually affected by certain conditions (such as <26> 1>(IEQHR = 0>). - The input resistance, r_{i}, has the following values: r_{i}= R_times beLiouru = A '-_, and because of the two values, we have the following values: LcL//R = RR'_, beBBBi21BBbeR <<Rr_, so we have the following values: beirR =_, and mVMV +_beta += rr' bbbe_, where Omega = r'bb300c_. The input resistance can also be calculated by using [sisiR-uuu]. - The output resistance, r_{o}, can be calculated by the formula, where, u is the output voltage at no-load, and u0 is the output voltage at load. The calculation of the output resistance is related to factors such as the load resistance in the circuit. When all the excitations are assumed to be zero, the controlled source is cut off, and the output resistance can be calculated accordingly. 3. * * Impact on circuit performance ** - The variation of circuit parameters will affect the static operating point, voltage amplification and output wave. For example, when an AC signal was input, the circuit only had a static operating point when the direct current passed through it. The AC signal would interact with the static direct current, affecting the voltage and current at each point in the circuit, which in turn affected the amplification factor and output wave. For example, in a circuit consisting of a mos tube and a semiconductor, the positive and negative half cycles of the AC signal would change the working state of the mos tube and the semiconductor, thus affecting the amplification performance and output characteristics of the entire circuit. - In the experiment, you can change the component parameters in the circuit (such as R_{C}, R_{L}, etc.) to observe and measure the impact on the static operating point, voltage amplification, and output wave. This helps to understand the working principle and characteristics of the single-tube AC amplifier circuit. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-07-01 09:47

Single-phase AC electric meter circuit diagram

When the single-phase AC electric meter works, when the electric meter is connected to the circuit to be tested, the voltage of the circuit to be tested is added to the voltage coil. After the current of the circuit to be tested passes through the current coil, it will produce two alternating magnetic flux passing through the aluminum disk. These two magnetic flux are the same in time, and they will produce vortex currents on the aluminum disk. Due to the interaction between the magnetic flux and the vortex, a rotating moment was generated, causing the aluminum disk to rotate. The magnetic flux of the brake magnet also passes through the aluminum disk. When the aluminum disk is rotated, the magnetic flux is cut, and a current is induced on the aluminum disk. The interaction between the current and the magnetic flux of the brake magnet produces a brake moment opposite to the rotation direction of the aluminum disk, so that the rotation speed of the aluminum disk is uniform. Its main structure included a voltage coil, a current coil, a rotating disc (aluminum disc), a rotating shaft, a brake magnet, a gear, a meter, etc. These components worked together to achieve the power measurement function, but there was no detailed illustration of the single-phase AC electric meter circuit diagram. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-07-01 21:08

The War of Resistance: A Single Soldier Assault

The War of Resistance: The Single Soldier Assault was a novel written by Sun into the Sea. The story told the story of the protagonist, Zhao Tiejun, who traveled through the Anti-Japanese War and became a sharp knife against the enemy with his superb skills, carrying out various tasks. The novel was set in the War of Resistance against Japan and described the life and heroes of the war. The specific plot and content could only be understood by reading the full text of the novel.

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2024-12-27 04:54

Is an amplifier needed with Comica audio microphone?

It depends. Sometimes an amplifier can enhance the performance, especially if you're dealing with long cable runs or low input levels. But for basic setups, it might not be strictly necessary.

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2024-10-16 17:31

This year, China's online literature reached 7 billion yuan in output value, but what is online literature?

Online literature referred to a literary form that was serialised, published, and distributed through the Internet platform. It usually included online original novels, online novels, light novels, comics, game plots, and so on. The characteristic of online literature was that it was not limited by time and place, and readers could read it anytime and anywhere through various channels. At the same time, it also had a wide audience and the speed of transmission. According to statistics, the value of online literature in China reached 7 billion this year, which shows that online literature has become an important part of China's cultural industry and has achieved great commercial success. The rise of online literature also promoted the rapid development of China's digital publishing and cultural industries.

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2025-03-09 04:15

Pangu's output

I'm not sure what you mean by "Pangu output". If he was referring to Pangu's creation or influence in myths and legends, after Pangu created the world, his body parts turned into all things in the world, such as his breath turning into wind and clouds, his voice turning into thunder, his eyes turning into the sun and the moon, his limbs and body turning into the four poles and famous mountains of the earth, his blood turning into rivers, his veins turning into roads, his muscles turning into fields, his hair and beard turning into stars, his skin turning into flowers, trees, teeth, bones, Bone marrow turned into metal, stone, pearl, and jade, and sweat turned into rain. It could be seen as a great 'output' of Pan Gu to the world. From the perspective of the game, Pangu was a Warrior Hero. He had skills in the game, such as Pangu Axe, Raging Assault, Suppressing Grip, Genesis Splitter, and Convergence. 'The Myth of True Love in the Pangu Progenitor Universe' is equally wonderful. Please click to read it!

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2026-01-19 21:53

How to measure the motor resistance of a single-phase pump?

For the measurement of the single-phase pump motor resistance, the following methods can be used: cut off the connection UA, and use a 1-ohm-block Multimeter to measure the starting winding U1 and U2. The resistance should be about 5 to 10 ohm-blocks. If the resistance value is greater than 1k, the winding will be burned out. Then, measure the main winding V1V2, and its resistance value is dozens of Ohms. Then measure the main and auxiliary winding U1V1, which should be infinite normally. If there is a resistance value, it means that the main and auxiliary winding has a short circuit phenomenon. After that, you need to check whether the charging and discharge of the capacity is normal. In addition, the normal resistance range of a single-phase motor is usually between 5 - 50 Ohms, and the specific range needs to be determined according to the motor model and power. You can use a Multimeter to adjust the resistance gear. The two leads of the motor can be connected to the two test pins of the Multimeter for testing. If the resistance of the motor is within the normal range, the reading of the Multimeter should be between 5 - 50 Ohms. If the resistance is abnormal, you should check whether the motor's transformer and starting circuit are normal. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-07-02 04:52

How to measure the coil resistance of a single-phase motor

The following methods can be used to measure the coil resistance of a single-phase motor: 1. ** Preparing Work ** - First of all, the single-phase motor's power supply was disconnected, and the voltage of the electric current was discharged to ensure safe operation. - Choose a suitable ohmmeter (Multimeter ohmmeter) and select the range according to the actual situation of the motor. 2. ** Measuring Operation ** - A single-phase motor usually leads out three wires, which can be marked as 1, 2, 3. Use the ohmmeter (when the power is low, the ohmmeter can be appropriately increased) to measure the three wires in pairs, namely, measure the three sets of resistance values of the wires. Under normal circumstances, the measured resistance was 1 large and 2 small. - You can also connect the two poles of the ohmmeter to the two winding terminal of the single-phase motor and record the measured resistance value. When measuring, the starting winding resistance of the single-phase motor should be measured first, and then the working winding resistance should be measured. When measuring the resistance of the starting winding, the working winding should be disconnected from the reactor. 3. ** Judgement of results and precautions ** - When the two sets of small resistance values are equal to the largest resistance value, it proves that the motor coil winding is normal; when the two sets of small resistance values are not equal to the largest resistance value, it proves that the motor is damaged. If the measured resistance is infinitely large, it proves that the motor winding is broken and damaged. - During the measurement, pay attention to the connection of the ohmmeter's poles to ensure that they are correct. At the same time, pay attention to the measurement accuracy to avoid excessive errors. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-07-01 14:39

Is the Circuit a True Story?

Well, it's possible that 'The Circuit' is based on true events to some extent, but it could also be a completely fictional creation designed to engage and captivate the audience.

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2024-10-06 13:03

Is the circuit fiction or nonfiction?

It's hard to say for sure whether the circuit is fiction or nonfiction without more details. If it's described with scientific accuracy and relates to real-world electronics, it's nonfiction. If it has elements of fantasy or imagination, it might be fiction.

2 answers
2024-10-22 06:31
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