problems and remedies with homebrew & self made audio amplifiers

Описание: The video is somewhat technical because it shows the properties from a first (fresh made) experimental audio amp with BC 547 NPN, BC 557 PNP, 2N3055 NPN and TIP 2955 PNP. It surely shows all the flaws that you expect when you do this kind of experimental work. But, anyway, all these problems can also occur when you use audio amplifier chips and make a not properly layout, especially oscillations can be expected. More info about audio amplifiers in my channel trailer "radiofun232 on youtube".

Link:    • Radiofun232 on YouTube, find working & tes...  

My books are available on the LULU website, search for author Ko Tilman. In my book "Schematics 2, audio amplifiers and loudspeaker boxes" you will find much more info about how to make audio circuits & LS boxes.

Next video in this "problems and remedies series" is about crossover distortion:    • Cross over distortion in audio amplifiers ...  

This video is part of a series:
first video (test your transistors):    • You want to make an audio amplifier? Test ...  
second video: decoupling unit:   • Decoupling unit for audio amplifiers, how ...  
third video: croosover distortion part 1:    • Cross over distortion in audio amplifiers ...  
4th video: crossover distortion part 2:   • Cross over distortion in audio amplifiers ...  
SCHEMATIC & TEST 5-8W AUDIO AMP:    • 5-8 watt audio amplifier with unique tone ...  
endurance test from this 5-8 Watt audio amp:   • Endurance test from the 5- 8 watt audio am...  

IMPORTANT: when you use small ""smoothening" caps in the 50 P up to 100 P range to prevent oscillations and limit the bandwidth be careful that your amplifier does not start to oscillate(!). This is a common and well known problem. Remove these caps in cases of oscillations or use smaller caps (in the 1 pF up to 15 P range).