70 watt class AB power amplifier
Loading...
Loading...
722
views
Loading...
Uploaded by VisioninScience on Jul 1, 2011
The power amplifier is fully discrete, and capable of 70 watts continuous average power, into 8 Ohms. It is the same core circuit, used in the 130w version. The separate pre-amplifier is used for convenience; both are self designed. Minor scratching noises are from the camera microphone being over-driven. Audio tracks used are from "U2 Rattle and Hum", "Talking Heads Popular Favorites 1976-1992" and Ludwig Beethoven's Pastoral sonata Op. 28.
4:14
6V6 6J5 Class A Vacuum Tube (Valve) Power Amplifier Circuitby electronicecircuits922 views- 50:20
Lecture - 33 BJT Differential Amplifiersby nptelhrd9,432 views
- 51:06
Lecture - 24 Class-B Power Amplifier Load and Driveby nptelhrd6,857 views
- 16:42
CDC Electronic Workshop - The Amplifier III part 4by CoolDudeClem886 views
- 9:02
Biasing an Audio Transistorby AllAmericanFiveRadio63,273 views
- 3:00
First startup of stereo tube amplifier (only one chanel)by martas4912,848 views
- 5:19
Operational Amplifier Tutorial & super microphone circuitby Afrotechmods114,184 views
- 3:21
UCD class D amp. min load 2 ohm.by azmi2020446 views
- 1:37
High-Efficiency Audio Power Amplifierby cdawzrd243 views
- 6:07
Understanding Sound Reinforcement - Power Amplifiers (Part 1)by QSCAudioProducts8,562 views
- 3:47
Class AB amplifierby TheElectricnoob366 views
- 4:50
Class D audio amplifier using only the 555 timer ICby vegmatic196613,140 views
- 4:22
2 transistor audio amp - 1/2 Wattby 3mustardMoNkEyS974 views
- 9:35
AUDIO AMPLIFIER IC TDA 7052 low power ---- tutorialby jsjassem21,985 views
- 6:05
Audio amplifier IC chip amp - How to use PT 2by vegmatic19666,296 views
- 5:30
DIY ST6 Single-end DC Pure Class A Power Amplifierby scericli37,183 views
- 6:07
Luxman L-550 Pure Class A Amplifierby Filmatorius1,805 views
- 4:22
Simulating Magic Eye Tubes With Spinning LEDs and Simple Electronicsby ac7zl45,589 views
- 7:23
Roland Cube 100 Watt Bass Combo CB100 - Discontinued Nevada Music UKby NevadaMusicUK13,765 views
- 1:52
MTX Terminators 2 12" 500 watt ampby wahhtahh158,762 views
@Multisynchronizer hi multi, thank you. it does have a 100pf cap across the base and collector of the class-a driver before the complimentary outputs, but is only to limit the frequency @ 100khz. it is otherwise made to be linear. i don't work on amplifiers as much these days, but parts of this circuit may be used in a professional design later.
VisioninScience 6 months ago
Just seen this vid...
Nice Chris, very clean sound - mids are articulate and vivid, which is always great for the stereo reproduction, enhancement and getting that realistic sound. Do you decouple near the transistors on the split voltage rail with dry type capacitors? Polypropylene caps (around 1nf to 100nf depending on taste) works well to subtlety fine tune the overall sound.
Anyhow this amp sound real good, good job.
Multisynchronizer 6 months ago
@destroyersoueu thanks, yes it's turned out to be a reliable test circuit.
VisioninScience 7 months ago
Good sound
destroyersoueu 7 months ago