Low power amplifier P8W4R- detail clear sound

mac1257 · 16th October 2011, 10:31 PM

Low power amplifier P8W4R- detail clear sound, is possible only for low power.

mac1257 · 25th October 2011, 03:11 PM

Money is not everything. I am surprised for the audio censorship of information and lack of interest by good diagrams electronic amplifiers that are as unique and good. I gave another similar scheme.

mac1257 · 05:48 PM

For a clean amplifier power transistors must be exactly as reinforcement in the diagram, the load output of the amplifier must be accurate, the type of transistor BC313/211 French or Polish product, Parameters for BC313/211 - Ic = (Ico = 4.5mA + Id = 20mAp) = 24.5 --- 27mA max, parameters for 2SC3182 - Ic = 2Ap/Ro = 4R / b = 240 min.

mac1257 · 26th October 2011, 05:10 AM

Higher power amplifier can be done only purely for low output resistance.

AndrewT · 26th October 2011, 11:20 AM

Could you help by itemise/highlighting the differences in the attachments of posts1, 2 & 4?

mac1257 · 28th October 2011, 06:20 AM

Each of these amplifiers is clean and techniques are similar, small differences between them relate to the power and the output resistance of the amplifier.

25th October 2011, 05:30 PM	#3
mac1257 diyAudio Member Join Date: Mar 2011 Location: Stalowa Wola	Re:P8W4R For a clean amplifier power transistors must be exactly as reinforcement in the diagram, the load output of the amplifier must be accurate, the type of transistor BC313/211 French or Polish product, Parameters for BC313/211 - Ic = (Ico = 4.5mA + Id = 20mAp) = 24.5 --- 27mA max, parameters for 2SC3182 - Ic = 2Ap/Ro = 4R / b = 240 min. Last edited by mac1257; 25th October 2011 at 05:48 PM. Reason: (Ro=2R) -Ro=4R

26th October 2011, 11:20 AM	#5
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Could you help by itemise/highlighting the differences in the attachments of posts1, 2 & 4? __________________ regards Andrew T.

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