amplifier with feedback
Is the feedback amplifier circuit a closed loop circuit?
In an amplifier circuit, a circuit with feedback was called a closed-loop circuit. The feedback amplifier circuit had a feedback path from the output to the input. This feedback circuit was in a closed-loop state, so the feedback amplifier circuit was a closed-loop circuit.
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1 answer
2026-07-05 06:31
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
Why is the volume control of the amplifier reversed?
The volume control of the amplifier was reversed. This was a little strange. Normally, the volume would be increased clockwise and decreased counterclockwise. If it was the opposite, it could be that the internal circuit of the amplifier was connected wrongly, or there was a problem with the settings. Some amps had special settings to adjust the direction of the volume control. It was also possible that the volume control was broken. In this case, professional maintenance personnel might be needed to check and repair it.
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2026-08-12 04:42
Why is the common-emit amplifier circuit inverted?
In the common-emitting amplifying circuit, when the input signal is positive for half a cycle, the base potential of the NPM triode is raised by the input signal, the base voltage to the ground increases, and the degree of continuity increases, that is, the resistance of the collector and the transmitter decreases, the current increases, the voltage at both ends of Rc increases, the voltage of the C pole of the triode to the ground decreases, and the output capacity enters a discharge state when the potential of the output is higher than that of the C pole. At this time, the lower end of the load Ri is positive, the upper end is negative, and the output signal is negative for half a cycle. When the input signal is in the negative half cycle, the base potential is pulled down by the input signal, the voltage of the B pole to the ground is reduced, the degree of continuity is reduced, the current is reduced, the voltage at both ends of Rc is reduced, the potential of the C pole is raised, and the output voltage is lower than that of the C pole. At this time, the lower end of the load Ri is negative, the upper end is positive, and the output signal is in the positive half cycle. Therefore, the input and output of the common-emit amplifier circuit were reversed.
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2026-08-17 10:37
Huawei mobile phone camera amplifier function
If you want to use the magnifying function of the Huawei phone camera (similar to the magnifying function), you can do the following:
1. He turned on the phone's camera and entered the photo mode. He stretched the page with two fingers, and the camera page would automatically zoom. The greater the stretch of the two fingers, the higher the focus and the farther the zooming distance.
2. You could also adjust the focus by using the focus button on the right side of the camera. The further you pulled it up, the farther you zoomed in.
3. He clicked to take a picture and then clicked on the zoom factor on the right. 1 times was the normal size. More than 1 times would have the effect of a telescope (magnifying). The higher the zoom factor, the farther the distance could be seen. At present, Huawei's mobile phones could support up to 50 times zooming. In the settings, the process of turning off the zoom-in gesture was as follows: find the settings in the phone and click on it; after entering the settings, click on more settings; click on no obstacles; find the zoom-in gesture and click off after entering it.
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2026-07-23 17:43
Excellent feedback.
A good review usually needs to be developed from the following aspects:
1. The characteristics of the work itself: To read an excellent novel, we need to first understand its story structure, character creation, plot development, theme and other characteristics. After that, they could talk about what they had learned or what profound inspirations they had felt from the work.
2. Your own feelings: During the reading process, we may have various feelings such as being moved, shocked, thinking, feeling, and so on. At this time, we can share how we were moved by the work or talk about our reflection on the theme of the work.
3. Sharing with others: We can invite some like-minded friends to share our feelings and thoughts after reading, to exchange and inspire each other.
An excellent review should combine the work itself with one's own feelings, and at the same time express one's thoughts and understanding of the work so that the readers can feel our opinions and thoughts.
1 answer
2024-09-24 04:01
Looking for feedback
I'm not a fan of online literature. I'm a fan of online literature. I can't provide any feedback. My purpose is to provide information and knowledge on various topics and to try my best to answer your questions. If you need a reflection on the novel, I suggest you read it and write one yourself.
1 answer
2024-09-24 01:13
Collect feedback!
Collect feedback!
I'm glad to be able to help. Here's some information that might be useful:
- After reading a book, a reader would express their thoughts and feelings after reading an article, book, or movie.
- After reading, you can start from the following aspects:
- describe and analyze the plot, characters, and theme of the work;
- evaluate the language style, writing style, structure, logic, etc. of the work;
- They shared their thoughts, feelings, and inspirations while reading or watching the movie.
Of course, if you haven't read or seen the works you want to recommend, you can tell me. I can help recommend some works or provide some relevant information so that you can start reading or watching better.
1 answer
2025-03-07 18:10
Which brand of Japanese home theater amplifier is good?
In general, there were several excellent brands to choose from in the Japanese home theater amplifier market, including Onkyo, Pioneer, Yamaha, and Denon. Every brand had its own unique characteristics and advantages. If you value sound quality and power more, you can consider choosing Onkyo or Yamaha. If you value design and functionality more, you can consider choosing Pioneer. Denon was also an award-winning brand that focused on the development and manufacturing of home theater, audio, and software products. The final choice of brand depends on your personal preferences and needs.
1 answer
2025-01-12 05:04
Which brand of Japanese home theater amplifier is good?
There are several excellent brands to choose from in the Japanese home theater amplifier market, including Onkyo, Pioneer, Yamaha, and Denon. Every brand had its own unique characteristics and advantages. If you value sound quality and power more, you can consider choosing Onkyo or Yamaha. If you value design and functionality more, you can consider choosing Pioneer. Denon was also an award-winning brand that focused on the development and manufacturing of home theater, audio, and software products. The final choice of brand depends on your personal preferences and needs.
1 answer
2024-12-20 12:00
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