robson fulco --
It is very hard to see where your input wires are connected. The input of the Krill board has connections for normal and bridged operation. The input wire goes to the end of R1 that is not connected to Q1. The input "ground" wire connects to the hole labeled GND near the input.
You might get more response by posting in the 100W Krill builder thread.
Good luck!
Phil
It is very hard to see where your input wires are connected. The input of the Krill board has connections for normal and bridged operation. The input wire goes to the end of R1 that is not connected to Q1. The input "ground" wire connects to the hole labeled GND near the input.
You might get more response by posting in the 100W Krill builder thread.
Good luck!
Phil
Hi Joshua,
My guess is that we are looking at a cultural thing here. It boils down to misunderstanding each other. Just relax and try to think on the positive side Joshua. Things will appear brighter then.
Now, the interesting thing was this. I looked at Steve's schematic and I was pretty certain that it would sound good. Do you know why? Because it is very close to circuits I have been building and studying. The bias network was very different though, so I could not be sure it worked. Of course no one can be certain of the measured specifications until you have one sitting on your service bench. That's what happens when you design a novel circuit.
Joshua, I'm not picking on you, but you seem to be looking to have an issue with someone or something.
-Chris
Edit: Joshua, this is the second very similar post I am responding to in this thread. I think it's time to drop this line of conversation as there isn't even anything positive you have brought up. You made your point.
No. That is called "peer review" when there are no hard facts to verify a design with. Once the facts are known, then accusing someone of making deliberate misleading statements is questioning their integrity.
My guess is that we are looking at a cultural thing here. It boils down to misunderstanding each other. Just relax and try to think on the positive side Joshua. Things will appear brighter then.
Well, actual measurements are next to impossible to do when there were no finished amplifiers to measure, yes? So, the next best thing is to take an educated look at the schematic and attempt to simulate the circuit. This was done, but the differing results posed other questions. Therefore, it was necessary to look at the models everyone was using and the software as well. The path taken was perfectly valid in the absence of an amplifier to document. People simulate circuits all the time with varying degrees of success. The circuits in the digital oscilloscope you just bought were simulated until they performed to expectations. Only then did they build a prototype.
Now, the interesting thing was this. I looked at Steve's schematic and I was pretty certain that it would sound good. Do you know why? Because it is very close to circuits I have been building and studying. The bias network was very different though, so I could not be sure it worked. Of course no one can be certain of the measured specifications until you have one sitting on your service bench. That's what happens when you design a novel circuit.
But, you didn't have a point to make. Your statement is based on your point of view, and that's fair. But you have to also admit you don't know much about circuit simulations. That makes your statements invalid as you can not weigh the importance of any data gained this way.
Joshua, I'm not picking on you, but you seem to be looking to have an issue with someone or something.
A person's feelings can be hurt from any number of things. That does not make anyone else wrong though either. If hurt feelings were a measure of truth, our world would be vastly different than it is now. Not to diminish anything that Steve may have felt, but I am addressing your comment in a general sense. What I am saying is that you can't prove there is a guilty party simply because someone else may have their feelings hurt. That is more a question of not receiving the response that was anticipated.
That's not wise for starters. You have made assumptions to begin with and there are always more than one side to a story. Creating trouble over matters such as this simply disrupts the natural flow of things. A very good saying would be simply "choose your battles wisely". This is something you need to do if you mean to continue acting this way. It's the hostility you are willing to bring that is the problem. Especially when you are not directly involved, that's even if there is something to be involved in.
-Chris
Edit: Joshua, this is the second very similar post I am responding to in this thread. I think it's time to drop this line of conversation as there isn't even anything positive you have brought up. You made your point.
Yes Anatech...years ago yo have sent me your schematic
And was almost the same...i remember even your CCS.... you schematic was called a kind of "diamond buffer" and was only the output circuit.
I can remember very well...i have simulated and had off set problems when i give up.
You know sounds nice.... as you were working on it Chris.
People do not know you as the scientist you are..also they do not know you have an entire wall plenty of audio instruments of top quality..also they do not know you had a repair shop (very big) and had a business connected to audio amplifiers.
I think you should present yourself in a better way...so...nobody will try to reduce your importance or to fool you, thinking you are just a moderator..some bureaucratic work to delete bad educated threads and to control behavior... you are much more than that.
I have a picture somewhere...i have never watched so many equipment together...only the speaker was something we can criticise watching it, but this do not evaluate sonics..that awfull thing can sound wonderfull.
regards,
Carlos
And was almost the same...i remember even your CCS.... you schematic was called a kind of "diamond buffer" and was only the output circuit.
I can remember very well...i have simulated and had off set problems when i give up.
You know sounds nice.... as you were working on it Chris.
People do not know you as the scientist you are..also they do not know you have an entire wall plenty of audio instruments of top quality..also they do not know you had a repair shop (very big) and had a business connected to audio amplifiers.
I think you should present yourself in a better way...so...nobody will try to reduce your importance or to fool you, thinking you are just a moderator..some bureaucratic work to delete bad educated threads and to control behavior... you are much more than that.
I have a picture somewhere...i have never watched so many equipment together...only the speaker was something we can criticise watching it, but this do not evaluate sonics..that awfull thing can sound wonderfull.
regards,
Carlos
You just hit the mark Senor Carlos sir! Respect is a two way street, and also to be given first in order to receive.
Regards,
mannycc
Re: Re: Re: Some real measurements...
Andypairo, could you please say something about bias tracking?
Andypairo said:
Andypairo, could you please say something about bias tracking?
Hi Carlos,
How are you feeling now? Better? Make sure you keep clean until you are 110% healed!
Thank you very much for those kind words. I see no need to represent myself strongly,or "puff up" to look bigger. I'm just me. BTW, I added to the "wall". 😀 Some day I will be able to make it neater with a new bench.
The interesting thing about the amplifier output stage I sent you is that I'm just starting to understand it again after the accident. Strange feeling when your own work is new to you. I have another idea to try out as well. That unit should have maybe 30 to 35 mV DC offset at the most without any correction. It also has no turn on or off thump by itself. Try using a capacitor to the input and short that junction on the amp side of the capacitor until your voltage amplifier has settled down. 1 uF is more than enough for coupling there. The other nice feature is that the DC offset stays below 1 VDC if one rail fuse blows open.
I might be able to send you the artwork I used to make that first design. I do have some working, but I'm still not happy with them. Other people seem to think they are good though.
Some error correction circuit helped, but that is where I was when my life changed.
Hi mannycc,
Often, people do not see the entire story because they come into the middle of it. I have always treated people with respect unless that respect is abused.
-Chris
How are you feeling now? Better? Make sure you keep clean until you are 110% healed!
Thank you very much for those kind words. I see no need to represent myself strongly,or "puff up" to look bigger. I'm just me. BTW, I added to the "wall". 😀 Some day I will be able to make it neater with a new bench.
The interesting thing about the amplifier output stage I sent you is that I'm just starting to understand it again after the accident. Strange feeling when your own work is new to you. I have another idea to try out as well. That unit should have maybe 30 to 35 mV DC offset at the most without any correction. It also has no turn on or off thump by itself. Try using a capacitor to the input and short that junction on the amp side of the capacitor until your voltage amplifier has settled down. 1 uF is more than enough for coupling there. The other nice feature is that the DC offset stays below 1 VDC if one rail fuse blows open.
I might be able to send you the artwork I used to make that first design. I do have some working, but I'm still not happy with them. Other people seem to think they are good though.
Some error correction circuit helped, but that is where I was when my life changed.Hi mannycc,
Often, people do not see the entire story because they come into the middle of it. I have always treated people with respect unless that respect is abused.
-Chris
Re: Re: Re: Re: Some real measurements...
During the tests I nearly smoked the dummy load but the bias looked pretty stable.
Can't make other tests for now because I removed the heatsinks to have them cut to a size that can fit into a chassis.
Ciao
Andrea
bogdan_borko said:
During the tests I nearly smoked the dummy load but the bias looked pretty stable.
Can't make other tests for now because I removed the heatsinks to have them cut to a size that can fit into a chassis.
Ciao
Andrea
bogdan_borko said:
My simulation using the schematic attached at post #1255 has very very similar results.
regards
Ed
I am fine Chris..... and folks
I am slowly returning to activity..but slowly...now simulating function generator circuits... double T oscilators and trying to find some circuit that produces sinusoidal with low distortion to assemble.
For a while into simulators...but soon i will be holding soldering iron once again.... 15 minutes working sitted and 30 minutes walking around.
regards,
Carlos
I am slowly returning to activity..but slowly...now simulating function generator circuits... double T oscilators and trying to find some circuit that produces sinusoidal with low distortion to assemble.
For a while into simulators...but soon i will be holding soldering iron once again.... 15 minutes working sitted and 30 minutes walking around.
regards,
Carlos
Re: I am fine Chris..... and folks
I do that - - - - - - and then I take a nap! 😴
It is good to see you gaining strength Carlos! My construction has slowed because I need some parts from Steve - plus we have a house guest this week and my wife thinks that I should do silly things such as actually visit with them instead of hiding out in the man cave putting my amps together.
destroyer X said:
I do that - - - - - - and then I take a nap! 😴
It is good to see you gaining strength Carlos! My construction has slowed because I need some parts from Steve - plus we have a house guest this week and my wife thinks that I should do silly things such as actually visit with them instead of hiding out in the man cave putting my amps together.
I keep seeing microcap mentioned
around here... any lottery winners.😎
that costs 5K..??
Or are they downloading off of torrent? 😀
OS
around here... any lottery winners.😎
that costs 5K..??
Or are they downloading off of torrent? 😀
OS
Hi c2cthomas,
Hi Carlos,
Don't you hate being really uncomfortable, but too tired to walk around? At night, I have to work to exhaustion simply to be able to sleep. You should be feeling better soon though.
-Chris
Have you been talking to my wife by chance?
Hi Carlos,
Yup. Either that or something similar.
Don't you hate being really uncomfortable, but too tired to walk around? At night, I have to work to exhaustion simply to be able to sleep. You should be feeling better soon though.
-Chris
Sometimes i think God wants me into the skies assembling amplifiers
One problem comes following the other..now another problem into the skin... some alergic thing.
Back to doctors once again... this is bothering me .... too much doctors and too much needles into my vains.
I cannot understand.... if he wants me there with him, why he do not send me a ligthning as final and fast solution.... or a heart stroke?
ahahahahah!
Maybe they are needing old style amplifiers builders into heaven... and do not want them smoked or toasted.
regards,
Carlos
.....................................................................................
I am thinking to build another Krill, my style boards...just to listen to it in advance those guys may lock me inside hospital once again...but there's an interesting nurse to be watching..she walks in a very delicious way..alike Giselle Bundchen, our top model... what an elegance to walk!
One problem comes following the other..now another problem into the skin... some alergic thing.
Back to doctors once again... this is bothering me .... too much doctors and too much needles into my vains.
I cannot understand.... if he wants me there with him, why he do not send me a ligthning as final and fast solution.... or a heart stroke?
ahahahahah!
Maybe they are needing old style amplifiers builders into heaven... and do not want them smoked or toasted.
regards,
Carlos
.....................................................................................
I am thinking to build another Krill, my style boards...just to listen to it in advance those guys may lock me inside hospital once again...but there's an interesting nurse to be watching..she walks in a very delicious way..alike Giselle Bundchen, our top model... what an elegance to walk!
VERY sorry to hear Carlos.
Please try to take care of your self so you can get better.
My son and I will keep you in our prayers.
Please try to take care of your self so you can get better.
My son and I will keep you in our prayers.
Here is the finalised schematic for the 50W amp that exactly matches my boards. It has been checked by people other than me and was found to be correct.
- Status
- Not open for further replies.