TELEFUNKEN V-69a, F2a11 PP , 1952The Telefunken V-69 is an interesting的简体中文翻译

TELEFUNKEN V-69a, F2a11 PP , 1952Th

TELEFUNKEN V-69a, F2a11 PP , 1952The Telefunken V-69 is an interesting amplifier of stringent symmetric design. The Telefunken V69 series is a typical German design of studio audio amplifiers made from the late 1940’s up to the 1960’s. Lots of such German amplifiers made use of the balanced phase inverter types, and very often so, to act as the driver as well. A thing that often puzzles me with regards to Western Electric designs and other push pull designs equipped with input transformers, is that this very input transformer is followed by some sort of electronic phase inverter. If you insist on an input transformer, why not use it as the phase splitter as well ? All we need is a centre tap. Telefunken were obviously thinking in the same terms and here the input transformer does indeed handle the phase splitting. Excellent….UPDATE: Due to a mail from Frank Blöhbaum, Germany, I have momentary withdrawn a large part of the vignette covering the V69a Amplifier. Frank Blöhbaum correctly pointed out that my analysis with regards to the feedback scheme was wrong. I apology for this mistake. It turned out I had made an incorrect drawing in my notes and was actually partly analysing the “wrong” amplifier.Thanks a lot to Frank Blöhbaum for spotting the mistake. I will upload the material again, once I have corrected it for the error.The EZ12 rectifier is an indirectly type developed by Telefunken and introduced in 1938. Although the Telefunken datasheets recommends the use of series resistors it was hardly mandatory as Telefunken themselves ignores that advice in the V69. EZ12 was the predecessor for GZ34 that came in 1954. Note that EZ12 uses German steel socket and 6,3V heater.EF804s is a special quality, low microphonic, low hum, long life, high reliability, tight tolerance, vibration shock proof, non interface cathode , – pentode…..phew…designed for LF applications. Socket is noval. It is vital for this valve that the heater voltage is kept as close to 6,3 volts as possible. I would apply regulated DC voltage – LM317 or similar. EF804s was a common used pentode in German sound studio and broadcast equipment.F2a11 is one of the best tetrodes developed for audio. A pair will easily provide you with 30-40 Watts in to a 5kΩ load. It is amazingly linear as a triode as well , some 20 Watt’s into the same output transformer. A single one may deliver some 5 Watts with less than 350V at the plate.V-69 was made in three versions. The last model V69b used efficient solid state diodes and swapped the loop bias into conventional active bias. The higher Voltage and lower regulation due to the solid state diodes increased the output power to 35 Watt’s and improved the distortion figures.Not more to say about the Telefunken V69 for now. A less known, but very similar design was used in the German ARD V44 introduced in the late 1940’s.
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TELEFUNKEN V-69a,F2a11 PP,1952年<br><br>Telefunken V-69是一款有趣的严格对称设计放大器。Telefunken V69系列是典型的德国录音室音频放大器设计,从1940年代后期到1960年代制造。许多这样的德国放大器都使用平衡相位逆变器类型,而且通常也用作驱动器。关于Western Electric设计和其他配备输入变压器的推挽式设计,经常使我感到困惑的是,这种非常输入的变压器后面是某种电子相位逆变器。如果您坚持使用输入变压器,为什么不也将其用作分相器呢?我们需要的只是一个中心水龙头。德律风根显然是在用同样的方式思考,这里的输入变压器确实可以处理相分离。优秀的…。<br><br>更新:由于收到德国FrankBlöhbaum的邮件,我暂时撤回了覆盖V69a放大器的大部分小插图。FrankBlöhbaum正确指出,我对反馈方案的分析是错误的。我为这个错误表示歉意。原来,我在笔记中画了一个不正确的图,实际上是在部分分析“错误”的放大器。<br><br>非常感谢FrankBlöhbaum发现错误。纠正错误后,我将再次上传材料。<br><br>EZ12整流器是由Telefunken开发并于1938年推出的间接类型。尽管Telefunken数据表建议使用串联电阻,但由于Telefunken自己忽略了V69中的建议,因此几乎不是强制性的。EZ12是1954年推出的GZ34的前身。请注意,EZ12使用德国钢制插座和6,3V加热器。<br><br>EF804s是一种特殊质量的,低麦克风,低嗡嗡声,长寿命,高可靠性,紧密公差,抗振动冲击,非界面阴极-–五极管.... phew ...专为LF应用而设计。套接字是新手。对于该阀至关重要的是,加热器电压应保持尽可能接近6.3伏。我将使用稳压直流电压-LM317或类似电压。EF804s是德国录音棚和广播设备中常用的五极管。<br><br>F2a11是为音频开发的最好的四极管之一。一对将轻松为您提供30-40瓦的5kΩ负载。它也像三极管一样具有惊人的线性,在同一个输出变压器中大约20瓦。一块可以在板上以低于350V的电压提供约5瓦的功率。<br><br>V-69分为三个版本。最后一个型号V69b使用了高效的固态二极管,并将环路偏置转换为常规的有源偏置。由于固态二极管的缘故,更高的电压和更低的调节将输出功率提高到35瓦,并改善了失真系数。<br><br>现在就不多说Telefunken V69了。1940年代后期推出的德国ARD V44使用了鲜为人知但非常相似的设计。
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TELEFUNKEN V-69a, F2a11 PP , 1952<br><br>Telefunken V-69 是一种具有严格对称设计的有趣放大器。Telefunken V69 系列是典型的德国设计工作室音频放大器,从 20 世纪 40 年代末一级到 60 年代。很多这样的德国放大器都使用平衡相变频器类型,而且经常是作为驱动器的。对于西电设计和其他配备输入变压器的推拉设计,一个经常让我困惑的事情是,这种输入变压器后面跟着某种电子相变频器。如果你坚持一个输入变压器,为什么不使用它作为相位分路器呢?我们所需要的只是一个中心水龙头。Telefunken 显然用同样的术语思考,在这里,输入变压器确实处理相位分割。非常好。。。。<br><br>更新: 由于来自德国弗兰克 · 布莱鲍姆的邮件, 我暂时撤回了覆盖 V69a 放大器的晕影的很大一部分。弗兰克·布莱鲍姆正确地指出,我对反馈方案的分析是错误的。我为这个错误道歉。原来我在笔记中画错了, 实际上是在部分分析 "错误" 放大器。<br><br>非常感谢弗兰克·布莱鲍姆发现了这个错误。我会再次上传材料, 一旦我纠正了错误。<br><br>EZ12整流器是Telefunken公司于1938年开发并推出的间接类型。虽然Telefunken数据表建议使用系列电阻器,但很难强制使用,因为Telefunken本身忽略了V69中的建议。EZ12 是 1954 年 GZ34 的前身。请注意,EZ12 使用德国钢插座和 6,3V 加热器。<br><br>EF804s 是一种特殊的质量,低微音,低嗡嗡声,长寿命,高可靠性,耐受性紧,防振,非接口阴极,+五极管...专为 LF 应用而设计。套接字是无价的。对于此阀,加热器电压尽可能保持接近 6,3 伏,这一点至关重要。我会应用调节直流电压 + LM317 或类似。EF804s 是德国音响演播室和广播设备中常用的五极管。<br><br>F2a11 是专为音频开发的最佳四分法之一。一对将轻松地为您提供 30-40 瓦的 5kΩ 负载。它是惊人的线性作为三重奏,以及约20瓦的进入相同的输出变压器。单个可提供约 5 瓦,板下功率小于 350V。<br><br>V-69是三个版本。最后一个型号 V69b 使用高效的固态二极管,将环路偏置交换为常规有源偏置。由于固态二极管,电压越高,调节越小,输出功率增加到35瓦,并改善了失真数字。<br><br>现在没有更多关于 Telefunken V69 的说。在 20 世纪 40 年代末推出的德国 ARD V44 中,使用了一种不太为人所知但非常相似的设计。
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TELEFUNKEN V-69a, F2a11 PP , 1952The Telefunken V-69 is an interesting amplifier of stringent symmetric design. The Telefunken V69 series is a typical German design of studio audio amplifiers made from the late 1940’s up to the 1960’s. Lots of such German amplifiers made use of the balanced phase inverter types, and very often so, to act as the driver as well. A thing that often puzzles me with regards to Western Electric designs and other push pull designs equipped with input transformers, is that this very input transformer is followed by some sort of electronic phase inverter. If you insist on an input transformer, why not use it as the phase splitter as well ? All we need is a centre tap. Telefunken were obviously thinking in the same terms and here the input transformer does indeed handle the phase splitting. Excellent….UPDATE: Due to a mail from Frank Blöhbaum, Germany, I have momentary withdrawn a large part of the vignette covering the V69a Amplifier. Frank Blöhbaum correctly pointed out that my analysis with regards to the feedback scheme was wrong. I apology for this mistake. It turned out I had made an incorrect drawing in my notes and was actually partly analysing the “wrong” amplifier.Thanks a lot to Frank Blöhbaum for spotting the mistake. I will upload the material again, once I have corrected it for the error.The EZ12 rectifier is an indirectly type developed by Telefunken and introduced in 1938. Although the Telefunken datasheets recommends the use of series resistors it was hardly mandatory as Telefunken themselves ignores that advice in the V69. EZ12 was the predecessor for GZ34 that came in 1954. Note that EZ12 uses German steel socket and 6,3V heater.EF804s is a special quality, low microphonic, low hum, long life, high reliability, tight tolerance, vibration shock proof, non interface cathode , – pentode…..phew…designed for LF applications. Socket is noval. It is vital for this valve that the heater voltage is kept as close to 6,3 volts as possible. I would apply regulated DC voltage – LM317 or similar. EF804s was a common used pentode in German sound studio and broadcast equipment.F2a11 is one of the best tetrodes developed for audio. A pair will easily provide you with 30-40 Watts in to a 5kΩ load. It is amazingly linear as a triode as well , some 20 Watt’s into the same output transformer. A single one may deliver some 5 Watts with less than 350V at the plate.V-69 was made in three versions. The last model V69b used efficient solid state diodes and swapped the loop bias into conventional active bias. The higher Voltage and lower regulation due to the solid state diodes increased the output power to 35 Watt’s and improved the distortion figures.Not more to say about the Telefunken V69 for now. A less known, but very similar design was used in the German ARD V44 introduced in the late 1940’s.<br>
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