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hello people,
I am currently working on a desing of the Soldano SLO100 preamp, and i have read some stuff out of "design tube preamps for guitar and bass"
And it says a multi star ground with daisy chain is better then a normal ground star where you connect everything on the same ground.
So i...
Power supply is correct, just the supply rails on the pcb are around 11V
For some reason i can't re-adjust the bias settings(and yes my potentiometer is working correctly)
And again i have some new information.
The Basis -> Emitter voltage of the Tip's are 0,5V
The whole circuit is tacking 0.9A
And through R20 and R21 goes 0.9A
And over the 15V Zener diode is 150mV
I asked my brother(3th year electrical engineering at TU Delft) and he doesn't know to problem...
no one had suggestions??
- - - Updated - - -
I have got some more information for you guys
Supply volage drops to +11V and -11V
And if i remove Q1 and Q2, the bias settings are correct, and the amp won't get hot.
i solved a problem and i got another one :(
When is was testing R8 bruned out, so i measured in that spot, and turned out R9 wasn't 4.7K but 47 Ohm.
So i replaced R8 and R9 with the correct values, but now when i turn it on. the TIP's are getting very hot, and the two 22Ohm/5W resistors that...
i think the problem is q3, because it get's hot, and when i measured in that area, the speaker made some "ticking" noise everytime i maked contact with the multimeter.
But i dont think it's the lay out that fails, because i checked the area round Q3 a dozen times. so maybe Q3 is broken.
Maybe...
I think the bias current thing worked very well, the Amp is not getting hot anymore, but still no sound.
And i connected te +VE & -VE right and the supply voltage is +35V and -35V.
A friend of mine has a scope at home, so maybe i am going to test that at his place, or maybe school.
Thank you...
The Tip's are placed in proper location, and yes i followed the insturction on the page.
And i have to do the bias set up(am i going to do that right now).
And i don't have all that test equipement at home.
Hello everybody
I have some trouble with a 100W guitar amp i am building.
This is the Guitar Amp: **broken link removed**
This is my PowerAmp lay out:
And for the guys with ExpressPCB: https://www.mediafire.com/download/envpqboftm9c4v2/PowerAmp2.pcb
The problem is that te Tip36 and Tip35...
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