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Power supply of phantom power supplied microphones

A technology of a microphone and a power supply circuit, applied in the field of microphones, can solve problems such as interference with the correct and effective operation of the microphone, irregularities, etc.

Active Publication Date: 2012-01-25
AKG ACOUSTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Serious disadvantages in the state-of-the-art with respect to these requirements are irregularities and fluctuations in the primary current absorption, whereby these irregularities are transmissible and can interfere with the correct and efficient operation of the entire microphone

Method used

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  • Power supply of phantom power supplied microphones
  • Power supply of phantom power supplied microphones
  • Power supply of phantom power supplied microphones

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] figure 1 is a block diagram showing the main parts of a microphone according to the present invention. exist Figure 5 The phantom power supply of the microphone shown in is performed by the phantom power supply unit 31 through the feeder resistors 32, 33, which are of the same magnitude and are arranged in three poles which can be in or before the mixing meter Socket 4 on the back for example an XLR socket. Such phantom power is indicated at Figure 5 middle. According to the standard, three phantom power supplies are possible: the relevant values ​​of the feeder resistance for 12V, 24V or 48V supplies are 680Ω, 1.2KΩ, or 6.8KΩ, respectively. Lines 1 and 2 here represent the cable conductors provided by the phantom power unit; line 3 represents the ground wire, which is normally connected to the grounded cable shield. Via an audio cable, ie via lines 1, 2 and resistors 5, 6, the phantom power unit 31 is connected to the input of the power supply circuit 11 accordi...

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PUM

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Abstract

The invention relates to a microphone comprising at least one microphone capsule, at least one audio amplifier, and at least one additional power receiver, selected from the group of processors, control electronics, A / D and D / A converters, LED displays, etc., and whose energy supply occurs from a phantom power unit through the cable conductors of the audio cable, the so-called phantom power supply, and which capacitor microphone comprises a power supply circuit for the individual power receivers. The invention is characterized in that the power supply circuit comprises a control unit that converts the direct current transmitted via the cable conductors of the audio cable into an alternating current, a transformer connected to the control unit, and supply loops for the individual power receivers, where supply loops are inductively coupled by means of separate windings on the transformer to the alternating current generated by the control unit and to each other.

Description

technical field [0001] The present invention relates to a microphone. Background technique [0002] The microphone includes at least one microphone capsule selected from the group of processors, control electronics, A / D and D / A converters, LED displays, at least one audio amplifier, and at least one additional power receiver, which The power supply is from a phantom power supply unit through the cable conductor of the audio cable, the so-called "phantom power supply", wherein the microphone includes a power supply circuit for a separate power receiver, and the power circuit includes a power supply circuit which is transmitted through the cable conductor of the audio cable a control unit for converting direct current to alternating current, a transformer connected to the control unit, and a supply loop for a separate power receiver, wherein the supply loop is inductively coupled to the alternating current generated by the control unit through separate coils on the transformer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R19/04H04R1/00H02M3/28H04R3/00H04R1/04
CPCH04R1/04
Inventor K·内尔
Owner AKG ACOUSTICS