Unlock instant, AI-driven research and patent intelligence for your innovation.

Audio power amplifier circuit for car navigation equipment

An audio power amplifier circuit and car navigation technology, applied to amplifiers with semiconductor devices/discharge tubes, amplifiers, electrical components, etc., can solve problems such as high production costs, poor audio effects, and unstable audio power amplifier circuits

Active Publication Date: 2017-12-08
重庆一极科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, the audio power amplifier circuit of the car navigation is relatively unstable, the processed audio effect is poor, and its structure is very complicated, resulting in high production cost

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Audio power amplifier circuit for car navigation equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0011] See figure 1 , figure 1 It is the circuit schematic diagram of the audio power amplifier circuit of the vehicle navigation equipment of the present invention. The audio power amplifier circuit of the car navigation device in this embodiment includes a power amplification processing chip TDA7386, several capacitors, several resistors, several diodes and a triode Q1.

[0012] The power amplification processing chip TDA7386 has ST-BY pins, ...

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

No PUM Login to View More

Abstract

The invention discloses a vehicle-mounted navigation equipment audio power amplification circuit comprising a power amplification processing chip U29, a plurality of capacitance, a plurality of resistance, a plurality of diodes and a triode Q1. In the navigator audio power amplification circuit, four input pins of the power amplification chip U29 are connected with relative pins of an audio processing chip of an audio processing circuit to receive an audio signal of the audio processing circuit and to amplify the received audio signal; and after amplification, positive and negative ports of the four ways are connected with a loudspeaker. The circuit is simply structured and requires low cost; power amplification can be achieved via the amplification chip, the capacitance, the resistance and the triode; and the circuit has great stability.

Description

technical field [0001] The invention relates to an audio power amplifier circuit of a vehicle navigation device. Background technique [0002] Car dvd navigation is a car host with DVD playback, MP4 / MP3 playback and navigation functions. It is generally used to replace the original car's CD host. If it is a special design for a special car, its power plug and audio cable will be completely plugged into the original car, without changing any wiring of the original car, and the appearance and size are consistent with the original car style. If there is a video input port, it can also be used by installing a reversing camera. In the existing technology, the audio power amplifier circuit of the car navigation is relatively unstable, the processed audio effect is poor, and its structure is very complicated, resulting in high production cost. Contents of the invention [0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by t...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H03F3/213
CPCH03F3/213
Inventor 易春华
Owner 重庆一极科技有限公司