I discovered this Chinese manufacturer https://en.viva-elec.com.tw/stereo-2023.html
I designed a simple amplifier for myself, I plan to order production this month.
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on: March 21, 2024, 11:05:12 11:05
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Started by sphinx - Last post by Catcatcat | ||
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on: March 21, 2024, 08:49:35 08:49
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on: March 21, 2024, 02:50:03 02:50
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Started by sphinx - Last post by kumar | ||
You meant did you not? sllidshow Bob,what he said is obsolutely correct.BUZ901 and BUZ906 is used as output pair.2SK1530= BUZ901 N Channel, 200 V, 8 A, 1.5 ohm 2SJ201= BUZ906 P Channel, 200 V, 8 A, 1.4 ohm But what did you use for the 2SK537 N -Channel 1A mosfet? in 1982's Elektor crescendo article,1984's Elektor mini crescendo article they were not used any transistor for quiescent current circuit. but elektor crescendo millenium Edition, they used 2SK537 in quiescent current circuit. |
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on: March 20, 2024, 09:38:17 09:38
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Started by sphinx - Last post by Sideshow Bob | ||
insted of the output mosfet, 2SK537 , You meant did you not?2SK1530 ,i used BUZ901,BUZ906 without any issues 2SK1530= BUZ901 N Channel, 200 V, 8 A, 1.5 ohm 2SJ201= BUZ906 P Channel, 200 V, 8 A, 1.4 ohm But what did you use for the 2SK537 N -Channel 1A mosfet? |
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on: March 20, 2024, 05:17:48 05:17
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Started by sphinx - Last post by PM3295 | ||
You can always just build up one of Bob's designs without doing any design yourself. You will have to make your own pcb design to suit your enclosure, panel layout, etc. The advantage will be having an in depth description of the circuit operation if you need to do some troubleshooting after the build or later in use when something breaks down.
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on: March 20, 2024, 02:45:06 02:45
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Started by KhepeleSibilo - Last post by KhepeleSibilo | ||
Happy Nowruz 1403
سال 1403 مبارک اونقدر این پیام رو هر سال فرستادم خودم داره باورم میشه دارم به یک برنامه کامپیوتری تبدیل میشم ! |
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on: March 20, 2024, 01:10:01 01:10
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Started by sphinx - Last post by sphinx | ||
a got the 2006 ed of the book mentioned and some other books
by Douglas Self. i wasn't exactly looking for designing myself but i will check out the books i borrowed from the internet libraru. |
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on: March 19, 2024, 05:52:34 17:52
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Started by sphinx - Last post by PM3295 | ||
Try get hold of a copy of the book "Designing Audio Power Amplifiers 2019" by Bob Cordell. He walks you through a complete design, with the theory, calculations, simulations and measurements from the input through to the output stage. He starts with a basic design and goes through steps to lower the %THD, depending how complicated you want this to be. Years ago, having a %THD of 0.1% was considered to be Hi-Fi quality. Bob shows how you can lower this figure by many orders of magnitude by analyzing the parts responsible for causing distortion and how to improve it. It is a really good read. The parts he used in his designs should still be readily available.
Alternatively you could also look for books on audio amplifier design by Douglas Self. Both are worth reading. |
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on: March 19, 2024, 03:11:40 15:11
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on: March 19, 2024, 02:49:07 14:49
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Started by sphinx - Last post by enzine | ||
The problem is that it may be difficult to source some components. I looked at the 2001 and even here it hard to get most of the transistors what. Like 2SK537, 2SK1530, 2SJ201 From what I have found. 2SK1530/2SJ201 ->IRFP240PBF/IRFP240PBF also 2SK537 -> 2SK1643/2SK1338/2SK2733 But non of these SKUs is available from mouser(or similar) You're right, I bought them from a well-known and reliable distributor of electronic components. Only now have I realized that more than 10 years have passed . "Fugit irreparabile tempus" Ciao Enzo |