High-fidelity electron tube amplifier
A technology of electron tubes and amplifiers, which is applied in the field of high-fidelity electron tube amplifiers. It can solve the problems of complex circuits of electron tube amplifiers, poor fidelity effect of electron tube amplifiers, and low signal-to-noise ratio, and achieve the effects of simplified power supply, reduced noise, and low noise.
Pending Publication Date: 2022-05-13
李晓宇
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Because the working requirement of the filament of 300B is 5V1.2A, and the working requirement of the filament of PX25 is 4V2A, the existing electronic tube amplifier circuit is complicated
At the same time, the existing tube amplifiers have poor fidelity and low signal-to-noise ratio
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0012] combined with figure 1 , a high-fidelity electronic tube amplifier, including a pre-stage voltage amplification part, a power amplification stage, and a power supply block part, the pre-stage voltage amplifying part includes a pre-stage voltage amplifying tube 1, and No. 1 of the pre-stage voltage amplifying tube 1 The pin is grounded through a resistor, the No. 6 pin of the pre-stage voltage amplifying tube 1 is connected to the audio input 3 through the volume potentiometer 2, and the No. 2 pin of the pre-stage voltage amplifying tube 1 is directly coupled to the inductor 4. The No. 7 pin of the pre-stage voltage amplifying tube 1 is connected with the switching switch 5 through a capacitor and a resistor, and the power amplifying stage and the power supply part include a power amplifying tube 6 and a power transformer 7, and 3 of the power amplifyin...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A sixth pin of a pre-stage voltage amplifier tube is connected with an audio output through a volume potentiometer, a second pin of the pre-stage voltage amplifier tube is connected with an inductor in a direct coupling mode, and a seventh pin of the pre-stage voltage amplifier tube is connected with a change-over switch through a capacitor and a resistor. A third pin of the power amplifier tube is in direct coupling connection with the inductor, a first pin and a fourth pin of the power amplifier tube are connected with a power tube cathode, a second pin of the power amplifier tube is connected with audio output through an output transformer, and a primary side of the power transformer is connected with a power input socket. The secondary side of the power transformer is connected with a filament half-wave rectifier and an anode half-wave rectifier, the filament half-wave rectifier is connected with a filament alternating current and direct current change-over switch, and the filament alternating current and direct current change-over switch is connected with a first pin and a fourth pin of the power amplifier tube through a filament voltage drop resistor. The invention has the advantages of high signal-to-noise ratio, wide frequency response, large dynamic and simple circuit.
Description
technical field [0001] The invention relates to the technical field of electron tube amplifiers, in particular to a high-fidelity electron tube amplifier. Background technique [0002] The current tube 300B and PX25 single-ended amplifiers do not have a shared design. Because the working requirement of the filament of 300B is 5V1.2A, and that of PX25 is 4V2A, the existing electronic tube amplifier circuit is complicated. At the same time, the existing electronic tube amplifier has poor fidelity effect and low signal-to-noise ratio. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-fidelity electronic tube amplifier with high signal-to-noise ratio, wide frequency response, large dynamic and simple circuit. [0004] In order to solve the above technical problems, the technical solution provided by the present invention is: a high-fidelity electronic tube amplifier, including a pre-stage voltage amplification...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/22H02M7/04
CPCH03F3/22H02M7/04H02M7/046
Inventor 李晓宇
Owner 李晓宇