CN210016445U

CN210016445U - Two-channel vacuum tube preamplifier

Info

Publication number: CN210016445U
Application number: CN201920418178.6U
Authority: CN
Inventors: 陈燕山
Original assignee: Guizhou Calais Zhongke Intelligent Technology Co Ltd
Current assignee: Guizhou Calais Zhongke Intelligent Technology Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-02-04
Anticipated expiration: 2029-03-29

Abstract

The utility model discloses a two-channel vacuum tube preamplifier, in particular to the technical field of the preamplifier, which comprises a shell, wherein a programmable PLC is arranged in the shell, an audio monitoring unit is arranged at the connecting end of the programmable PLC, an input unit is arranged at the input end of the programmable PLC, and an output unit is arranged at the output end of the programmable PLC; the programmable PLC is used for providing clear and beautiful high-quality sound for a user and has a comprehensive sound control function; the audio monitoring unit is used for inhibiting common-mode signals and amplifying differential-mode signals. The utility model discloses a set up audio frequency monitoring unit, defeated department unit and input unit, realize the highest recording quality for the vacuum tube has specific audio frequency characteristic, has perfected the vacuum tube circuit, has promoted signal quality, has improved sound quality, can carry out integrated control to sound.

Description

Two-channel vacuum tube preamplifier

Technical Field

The utility model relates to a preamplifier technical field, more specifically say, this practicality relates to a binary channels vacuum tube preamplifier.

Background

A preamplifier refers to a circuit or electronic device placed between a source and an amplifier stage, and is designed to accept weak voltage signals from the source. The preamplifier amplifies the useful signal and also amplifies the noise, and the low-noise preamplifier is the preamplifier which enables the noise coefficient of the circuit to reach the minimum value. For weak signal detection instruments or devices, a preamplifier is one of the main components that introduce noise. The noise figure of the whole detection system is mainly dependent on the noise figure of the preamplifier. The minimum signal detectable by the instrument also depends primarily on the noise of the preamplifier. Preamplifiers are generally connected directly to the sensor that detects the signal, and the noise figure of the circuit is minimized only if the optimum source resistance of the amplifier is equal to the signal source output resistance.

G32 is a signal processor using numerical and vacuum tube technology, the audio processor of the device supports high quality signal channel, and by using low noise solid state electronic components, it can generate specific vacuum tube audio frequency characteristics, perfects vacuum tube circuit, the current G32 has too high function combination degree in the circuit, resulting in slightly larger noise of the product.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a binary channels vacuum tube preamplifier through setting up audio monitoring unit, defeated department unit and input unit, realizes the highest recording quality for the vacuum tube has specific audio characteristics, has perfected the vacuum tube circuit, has promoted signal quality, has improved sound quality, and is effectual to the noise reduction, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above purpose, the utility model provides the following technical scheme: a two-channel vacuum tube preamplifier comprises a shell, wherein a programmable PLC is arranged in the shell, an audio monitoring unit is arranged at the connecting end of the programmable PLC, an input unit is arranged at the input end of the programmable PLC, and an output unit is arranged at the output end of the programmable PLC;

the programmable PLC is used for providing clear and beautiful high-quality sound for a user and has a comprehensive sound control function;

the audio monitoring unit is used for inhibiting common-mode signals and amplifying differential-mode signals;

the input unit is used for working in an 'interlocking stereo' mode, and can also support single sound track and stereo sound track when inputting a single signal, and finally stereo sound mixing processing;

the output unit is used for balanced line output required by professional sound quality, can also be easily connected with unbalanced line input, and inputs the selected signal source into the relevant input of the equipment after the connection output, thereby realizing a shorter signal line and the highest recording quality.

In a preferred embodiment, the programmable PLC input terminal is provided with a power supply unit, the power supply unit comprises a power supply switch and a power supply input interface, the power supply switch is arranged on the front side of the housing, and the power supply input interface is arranged on the back side of the housing.

In a preferred embodiment, the audio monitoring unit comprises an input knob, a gain input knob and a gain output knob, the power switch is provided with a luminous volume meter on one side, and the gain input knob is provided with a low-cut function button on one side.

In a preferred embodiment, the gain input knob is disposed on a side of the luminous volume meter, the gain output knob is disposed on a side of the gain input knob, and the audio monitoring unit includes two input knobs, two gain input knobs, two luminous volume meters, two low-cut function buttons, and two gain output knobs.

In a preferred embodiment, the input unit includes a Line input interface, a MIC input interface, and a gain switching button, the gain switching button is disposed on one side of the output interface, the Line input interface is disposed on one side of the gain switching button, the MIC input interface is disposed on one side of the Line input interface, and a vacuum tube is disposed on one side of the equalizer.

This practical technological effect and advantage:

1. the audio monitoring unit, the input unit and the input unit are arranged to realize the highest recording quality, so that the vacuum tube has specific audio characteristics, the vacuum tube circuit is perfected, the signal quality is improved, the sound can be comprehensively controlled, and the noise is effectively reduced;

2. through setting up luminous volume table, can two output interface of effectual control, Line input interface and MIC input interface output level, promote detection effect.

Drawings

Fig. 1 is a back perspective view of the present invention.

Fig. 2 is a front perspective view of the present invention.

Fig. 3 is a sectional view of the present invention.

Fig. 4 is a unit diagram of the present invention.

Fig. 5 is a system diagram of the present invention.

The reference signs are: the device comprises a shell 1, a Programmable Logic Controller (PLC) 2, an audio monitoring unit 3, a signal amplifier 4, an equalizer 5, an input unit 6, an output unit 7, a power supply unit 8, a power supply switch 9, a power supply input interface 10, an input knob 11, a gain input knob 12, a gain output knob 13, a luminous volume meter 14, a low-cut function button 15, an output interface 16, a Line input interface 17, an MIC input interface 18, a gain switching button 19 and a vacuum tube 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by persons skilled in the art based on the embodiments in the present application without any creative work belong to the protection scope of the present application.

A dual channel vacuum tube preamplifier as shown in figures 1-5, comprising a housing 1, characterized in that: a programmable PLC2 is arranged in the shell 1, an audio monitoring unit 3, a signal amplifier 4 and an equalizer 5 are arranged at the connecting end of the programmable PLC2, an input unit 6 is arranged at the input end of the programmable PLC2, and an output unit 7 is arranged at the output end of the programmable PLC 2;

the programmable PLC2 is used for providing clear and beautiful high-quality sound for users and has a comprehensive sound control function;

the audio monitoring unit 3 is used for inhibiting common-mode signals and amplifying differential-mode signals;

the input unit 6 is adapted to operate in an "interlocked stereo" mode, and may also support mono and stereo soundtracks, and final stereo mixing processing, upon input of a single signal;

the output unit 7 is used for balanced line output required by professional sound quality, can also be easily connected with unbalanced line input, and after the balanced line input and the unbalanced line input are connected and output, the selected signal source is input into the relevant input of equipment, so that a shorter signal line is realized, and the highest recording quality is realized.

The input end of the programmable PLC2 is provided with a power supply unit 8, the power supply unit 8 comprises a power supply switch 9 and a power supply input interface 10, the power supply switch 9 is arranged on one side of the front surface of the shell 1, and the power supply input interface 10 is arranged on one side of the back surface of the shell;

the audio monitoring unit 3 comprises an input knob 11, a gain input knob 12 and a gain output knob 13, wherein one side of the gain input knob 12 is provided with a low-cut function knob 15;

the gain input knob 12 is arranged on one side of the luminous volume meter 14, the gain output knob 13 is arranged on one side of the gain input knob 12, and the audio monitoring unit 3 comprises two input knobs 11, two gain input knobs 12, two luminous volume meters 14, two low-cut function buttons 15 and two gain output knobs 13;

the output unit 7 comprises an output interface 16, and the output interface 16 is arranged on one side of the output interface 16, which is arranged on the power output interface 16;

the input unit 6 comprises a Line input interface 17, an MIC input interface 18 and a gain switching button 19, the gain switching button 19 is arranged on one side of the output interface 16, the Line input interface 17 is arranged on one side of the gain switching button 19, the MIC input interface 18 is arranged on one side of the Line input interface 17, and a vacuum tube 20 is arranged on one side of the equalizer 5.

The implementation mode is specifically as follows: by arranging the audio monitoring unit 3, the input unit and the input unit 6, the power input interface 10 is connected with a power supply, the power switch 9 is used for controlling the power supply, the programmable PLC2 is used for managing and sending signals of output and input, the signal amplifier 4 is used for amplifying the signals of output and output, the equalizer 5 is used for compensating the defects of a loudspeaker and a sound field by adjusting electric signals with various frequencies, the Line input interface 17 and the MIC input interface 18 work in an 'interlocking stereo' mode, simultaneously a single signal can be input into the output interface 16, a single sound track and a single sound track can be supported, and finally stereo sound mixing processing is carried out, the output interface 16 can directly connect the output of equipment to the input of a console, a recorder or a sound card, can connect balanced Line output required by professional sound quality, and can also easily connect unbalanced Line input, after the connection and the output, the selected signal source is input into the relevant input of the equipment, the input knob 11 can select the relevant input source, the gain input knob 12 and the gain output knob 13 control the signal intensity, and when a moving coil and a belt microphone are used, the highest recording quality is realized, so that the vacuum tube 20 has specific audio characteristics, the circuit of the vacuum tube 20 is perfected, the signal quality is improved, the sound can be comprehensively controlled, and the noise is effectively reduced.

The dual-channel vacuum tube preamplifier as shown in fig. 5 further comprises a luminous volume meter 14, wherein the luminous volume meter 14 is arranged on one side of the gain input knob 12.

The implementation mode is specifically as follows: through setting up luminous volume table 14, be equipped with two luminous volume tables 14, can two output interface 16 of effectual control, Line input interface 17 and MIC input interface 18 output level, promote detection effect.

This practical theory of operation:

referring to the attached drawings 1-5 of the specification, the highest recording quality is realized by arranging the audio monitoring unit 3, the input unit and the input unit 6, so that the vacuum tube 20 has specific audio characteristics, the circuit of the vacuum tube 20 is perfected, the signal quality is improved, the sound quality is improved, and the sound can be comprehensively controlled;

referring to the attached figure 5 of the specification, by arranging the luminous volume meter 14, the output levels of the two output interfaces 16, the Line input interface 17 and the MIC input interface 18 can be effectively monitored, and the detection effect is improved.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are referred to, and other structures may refer to general designs, and in the case of no conflict, the same embodiment and different embodiments of the present disclosure may be combined with each other;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A two-channel vacuum tube preamplifier, comprising a housing (1), characterized in that: a programmable PLC (2) is arranged in the shell (1), an audio monitoring unit (3), a signal amplifier (4) and an equalizer (5) are arranged at the connecting end of the programmable PLC (2), an input unit (6) is arranged at the input end of the programmable PLC (2), and an output unit (7) is arranged at the output end of the programmable PLC (2);

the programmable PLC (2) is used for providing clear and beautiful high-quality sound for users and has a comprehensive sound control function;

the audio monitoring unit (3) is used for inhibiting common-mode signals and amplifying differential-mode signals;

the input unit (6) is used for operating in an 'interlocked stereo' mode, and can support mono and stereo tracks when inputting a single signal, and finally stereo mixing processing;

the output unit (7) is used for outputting a balanced line required by professional sound quality, can be easily connected with an unbalanced line input, and inputs the selected signal source into the relevant input of the equipment after being connected and output, so that a shorter signal line is realized, and the highest recording quality is realized.

2. The dual channel evacuated tube preamplifier according to claim 1, wherein: programmable PLC (2) input is equipped with power supply unit (8), power supply unit (8) include switch (9) and power input interface (10), switch (9) set up in shell (1) front one side, power input interface (10) set up in shell back one side.

3. The dual channel evacuated tube preamplifier according to claim 2, wherein: the audio monitoring unit (3) comprises an input knob (11), a gain input knob (12) and a gain output knob (13), a luminous volume meter (14) is arranged on one side of the power switch (9), and a low-cut function button (15) is arranged on one side of the gain input knob (12).

4. A dual channel evacuated tube preamplifier according to claim 3, wherein: the gain input knob (12) is arranged on one side of the luminous volume meter (14), the gain output knob (13) is arranged on one side of the gain input knob (12), and the audio monitoring unit (3) comprises an input knob (11), the gain input knob (12), the luminous volume meter (14), a low-cut function button and the gain output knob (13) which are arranged in two numbers.

5. The dual channel evacuated tube preamplifier according to claim 1, wherein: the output unit (7) comprises an output interface (16), and the output interface (16) is arranged on one side of the power output interface (16) and arranged on the output interface (16).

6. The dual channel evacuated tube preamplifier according to claim 1, wherein: the input unit (6) comprises a Line input interface (17), an MIC input interface (18) and a gain switching button (19), the gain switching button (19) is arranged on one side of an output interface (16), the Line input interface (17) is arranged on one side of the gain switching button (19), the MIC input interface (18) is arranged on one side of the Line input interface (17), and a vacuum tube (20) is arranged on one side of the equalizer (5).