VF impedance adapting amplifier device for low frequency with electronic tubes insertible on line of path of low frequency signal
A technology of amplifying devices and electron tubes, which is applied to low-frequency amplifiers, amplifiers with semiconductor devices/discharge tubes, amplifiers, etc., and can solve problems such as poor listening quality and unpleasantness
Inactive Publication Date: 2005-08-10
尼古拉斯·吉拉尔
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Problems solved by technology
In this setup, the output stage of the "sound card" to the rest of the signal processing chain is usually implemented with an operational amplifier, such an output stage provides very poor listening quality, making it sound "dry" without Musical, rather unpleasant
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[0020] exist figure 1 The processing chain (1) for processing low frequency audio analog signals currently encountered in the various applications to be described below is generally shown in this schematic diagram. "Transmitter" (2) means any analog signal source or low-frequency interface with variable output impedance, through which low-frequency signals are transferred or transmitted, such as optical disc readers, digital audio cassette readers (DAT), Analog record readers and analog cassette tape readers, vinyl discs, computer sound cards, reverb consoles, sound effects units, compression units, recording microphones, "live boxes", car radio handsets, etc. Similarly, "receiving device" (3) means any intermediate audio link with variable input impedance that receives or transmits low frequency signals from a transmitting device, which may also come from low frequency power amplifiers, preamplifiers, "live boxes", Computer or console amplified loudspeaker, reverberation tab...
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The invention concerns an online low frequency amplifying interface operating in automatic cutting feed, particularly designed for multimedia computers. It concerns a impedance adapting device produced around an electronic tube. It can be arranged between a source transmitting low frequency signals and a receiver. The invention is characterised in that it comprises an low frequency amplifier sub-part having high impedance at the source whereto it is connected, and having a low impedance at the receiver whereto it is connected next. The high voltage power supply of the anodes of the low frequency device is produced by a working high frequency automatic cutting feed regulator feeding a voltage amplifying device. The automatic cutting feed regulator operates in direct current low voltage. The inventive device is particularly designed for sound boards and for sources of hi-fi installations, whether incorporated or not.
Description
technical field [0001] The invention relates to an impedance adapter amplifying device for inserting electronic tube audio into a low-frequency signal path. Background technique [0002] In low frequency electronics, there is currently no dedicated interface for impedance adaptation between links of the signal processing chain. In practice, in most cases the impedance of the output stage of the "transmitter" is equal to the impedance of the input stage of the "receiver", which in theory means improved power transfer at the expense of hearing, usually only It can reach the quality that is regarded as medium by music lovers. [0003] Currently, low-frequency signal processing chains such as recording studios, control room equipment (which can be mobile), pickups, "monitoring loops", hi-fi control equipment, home hi-fi equipment and installations in vehicles (ground, air and sea traffic) tools), home theater hi-fi, computer-to-computer hi-fi - these multimedia devices (which ...
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IPC IPC(8): H03F99/00H03F1/04H03F3/181
CPCH03F3/181H03F1/04
Inventor 尼古拉斯·吉拉尔
Owner 尼古拉斯·吉拉尔