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Old 12th January 2016, 03:42 PM   #1
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Default EF80 driving EL153, DIY with a picture tells a story.

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Telefunken's EL153 get our hands there is a feeling of love. 40W power consumption of the anode than his sibling "EL156" summoned up the courage, but has a lower resistance, capacitance between smaller. EF800 EF80 is the long-life models, more precision and longevity. With the EL153, can be described as heroic beauty, good match.

EL153 \ EF80 is a very good performance of vacuum tube, many people can not properly use, resulting in the illusion of high frequency of inappropriate audio use. This article is to teach you how to design, diy, out of a high quality tube amp. And those who disseminate high-frequency tube audio is not well people use the rumor nowhere to hide.

Detailed test results later in this article.

Last edited by TURING; 19th January 2016 at 05:47 PM.
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Old 12th January 2016, 03:42 PM   #2
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Old 12th January 2016, 03:44 PM   #3
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Old 12th January 2016, 03:45 PM   #4
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Old 12th January 2016, 03:46 PM   #5
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Simulation before the actual production for the successful completion of this tube amp provides the foundation.
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Old 12th January 2016, 03:47 PM   #6
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EL153 and EF80 both work best as HF/IF valves. Not good at AF.
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Old 12th January 2016, 03:47 PM   #7
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25v EF800 provide impetus voltage is sufficient to promote the EL153. This time preamp distortion of less than 0.3%
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Old 12th January 2016, 03:49 PM   #8
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Quote:
Originally Posted by JonSnell Electronic View Post
EL153 and EF80 both work best as HF/IF valves. Not good at AF.
Please continue to read on, there is evidence that EL153 is a very good audio power tube
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Old 12th January 2016, 03:50 PM   #9
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Better at HF than AF. Look at the Data Sheet.
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Old 12th January 2016, 03:51 PM   #10
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Power supply design is the most important, reduce the AC ripple in the same time, but also to reduce the power resonance amplitude. Here we are using bile rectifier, only to reduce the amplitude of the resonant power to raise more quality sound.

Figure borrowed a transistor as rectifier participate simulation, the actual use of the use of 3DG4, in order to sufficiently rectified current. Double choke design will ripple reduced to -70db or more.
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