In hind sight, more than probably. It is a wonder I am still alive! In this case I was one of the few American citizens.
Loren42
He had to be a bad boy, because LENR's is finding very little funding into the reseach done by Pons and Fleischmamn cold fusion discoveries.
Department of Energy studies of 1993 and 2004 showed that their research was full of errors and un-peruasive.
But the research being done here at U of Michigan, by my friend Professor Davis, and his students is looking good, but the heat and radiation is still a big concern. To be use on a large level.
Take Care
Ivey
He had to be a bad boy, because LENR's is finding very little funding into the reseach done by Pons and Fleischmamn cold fusion discoveries.
Department of Energy studies of 1993 and 2004 showed that their research was full of errors and un-peruasive.
But the research being done here at U of Michigan, by my friend Professor Davis, and his students is looking good, but the heat and radiation is still a big concern. To be use on a large level.
Take Care
Ivey
O.K. Teddy, I'mmmmmmmmmm bacccccck!
Well, got cleared by the doctors and the mold remover team to go back into my basement (the man cave) after months of illness and being invaded by mold.
I am allowed to spend 3 to 4 hours a day, depending on my health to work in my basement. Oh yes, and my wife has me on the kitchen stove timer. A new digital one.
I have a heating and cooling team in my basement right now, adding a new heating duct to my basement, near my work area, and a humidifier. Cost $485.00.
Now I can touch my stuff once again.
I will start working on Teddies power supply, starting Monday, once the basement is heated up and dried out some, over the weekend. And I will post the schematic of the phono amp.
Like I said before, it is nothing special, a simple circuit, with a flat RIAA, tilted a small amount towards treble.
Take Care
Ivey
Well, got cleared by the doctors and the mold remover team to go back into my basement (the man cave) after months of illness and being invaded by mold.
I am allowed to spend 3 to 4 hours a day, depending on my health to work in my basement. Oh yes, and my wife has me on the kitchen stove timer. A new digital one.
I have a heating and cooling team in my basement right now, adding a new heating duct to my basement, near my work area, and a humidifier. Cost $485.00.
Now I can touch my stuff once again.
I will start working on Teddies power supply, starting Monday, once the basement is heated up and dried out some, over the weekend. And I will post the schematic of the phono amp.
Like I said before, it is nothing special, a simple circuit, with a flat RIAA, tilted a small amount towards treble.
Take Care
Ivey
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O.k guys, got my grand son to help me get this posted. Here is the schematics.
These are very simple circuits, designed to keep the parts count as low as possible. Two jobs can be done by this design.
First is the phono amp, with a cathode follower driver at the end to aid in driving capacitive loads.
Second is the cathode follower which can be used as line amp by adding a switch, for switching in different inputs.
I put this together that way because it is something I saw used years earlier in a 1958 Audio article. It was good then and it will work now.
Take Care
Ivey
These are very simple circuits, designed to keep the parts count as low as possible. Two jobs can be done by this design.
First is the phono amp, with a cathode follower driver at the end to aid in driving capacitive loads.
Second is the cathode follower which can be used as line amp by adding a switch, for switching in different inputs.
I put this together that way because it is something I saw used years earlier in a 1958 Audio article. It was good then and it will work now.
Take Care
Ivey
Some of the values in the RIAA equalizer look more than a little off, where did they come from? Also R12 should probably be 1M or so... I'd try to avoid using anything larger than 301K for the series resistor in the RIAA equalizer network to keep noise down..
There is a passive eq stage (based on Lipschitz) on my site that will slot right into your circuit without any significant issues. I'd also recommend a electrolytic bypass across the cathode resistor in the first stage - you get several dB more gain and more importantly the Johnson noise from the cathode resistor will not be amplified. (All of my early designs used unbypassed cathode resistors and they were all somewhat noisier than they had to be IMHO.)
There is a passive eq stage (based on Lipschitz) on my site that will slot right into your circuit without any significant issues. I'd also recommend a electrolytic bypass across the cathode resistor in the first stage - you get several dB more gain and more importantly the Johnson noise from the cathode resistor will not be amplified. (All of my early designs used unbypassed cathode resistors and they were all somewhat noisier than they had to be IMHO.)
Those are good ideas and excellent information
I will bread board those suggested changes, and see what I come up with. Yet I wanted the feedback for noise reduction, which is why I did not use a by pass. But I will investigate it to see if it will improve it. Because as I get older, I no longer have a golden ear.
Oh yes and R12, I completely forgot to change it's value when I called it up when I was putting the schematic together. Its value is 330k. A good 470k will be good also. Thank you for pointing out my oversight.
Take Care
Ivey
I will bread board those suggested changes, and see what I come up with. Yet I wanted the feedback for noise reduction, which is why I did not use a by pass. But I will investigate it to see if it will improve it. Because as I get older, I no longer have a golden ear.
Oh yes and R12, I completely forgot to change it's value when I called it up when I was putting the schematic together. Its value is 330k. A good 470k will be good also. Thank you for pointing out my oversight.
Take Care
Ivey
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Some corrections made
I corrected some of the component values. Yet since there are few companies today making phono cartridges than before, it is hard to keep up with those changes today, because I do not follow their progress.
I still have and use cartridges from the late 1950's, 60's, 70,s and the 1980's.
I was smart enough to read the writing on the wall, and purchase replacement needles for pennies on the dollar in the 1990,s, when sells started to disappear in the CD boom period, followed by the MP3 boom in the early 2000's.
C3 is used for some of the older and earlier magnetic cartridges that I own. Also, I have some really old high priced ceramic cartridges by Grundig, dating back to 1963 and 64. I listen to my old 1960's LP's with them.
I do not use by pass, because in the earlier days, our carbon resistors were so noisy, by pass did not help much. It was good in guitar amps, because most used 6.3 ac for the heaters, using very high gain. And up to 6 pre amp tubes, for reverb, tremolo, etc.
But today with carbon film and metal film resistors, better caps, dc heater voltage, and with the added advantage of feedback, I seldom use bypass caps.
The manufacturing of today's products are so much better than the past. Most noise is found in the recordings of yesterday, unless you are using remastered material.
Take Care
Ivey
I corrected some of the component values. Yet since there are few companies today making phono cartridges than before, it is hard to keep up with those changes today, because I do not follow their progress.
I still have and use cartridges from the late 1950's, 60's, 70,s and the 1980's.
I was smart enough to read the writing on the wall, and purchase replacement needles for pennies on the dollar in the 1990,s, when sells started to disappear in the CD boom period, followed by the MP3 boom in the early 2000's.
C3 is used for some of the older and earlier magnetic cartridges that I own. Also, I have some really old high priced ceramic cartridges by Grundig, dating back to 1963 and 64. I listen to my old 1960's LP's with them.
I do not use by pass, because in the earlier days, our carbon resistors were so noisy, by pass did not help much. It was good in guitar amps, because most used 6.3 ac for the heaters, using very high gain. And up to 6 pre amp tubes, for reverb, tremolo, etc.
But today with carbon film and metal film resistors, better caps, dc heater voltage, and with the added advantage of feedback, I seldom use bypass caps.
The manufacturing of today's products are so much better than the past. Most noise is found in the recordings of yesterday, unless you are using remastered material.
Take Care
Ivey
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Yeah, I'd add R3 as well which should be 47K for a magnetic cartridge. C3 actually isn't necessary. Guess I was so caught up with the EQ network I failed to notice these.
The good thing of course with point to point is that you can build the thing, figure out what is wrong with it and fix it fairly easily.
someone in ivey's family(or ivey himself) told me via email that Ivey had died.
citing this as the reason the amp(which had been paid for) was not finished...2 years later.
citing this as the reason the amp(which had been paid for) was not finished...2 years later.
Mr. Bullard:
The truth is something that you have a problem with
It was I, Joseph, Ivey's great grandson that sent you the email. And my great grandfather did past away.
There is no need to cruel about this matter. My great grandfather wanted to finish the project, but he could not. I even took over for him. But my schooling and school activities got in the way.
As far as funds are concern, you only paid $70.00 dollars of the asking price of $300.00. My great grandfather informed me that he was so upset that he could not finish it on time, that he offered to complete the project at no additional charge, because he felt that he would not get another chance to use all of his electronic components in the future years due to his condition, and he felt that you were worth it.
I am sorry that the project was not completed; as was my great grandfather. But he was old, and could not stop what was happening to him.
I spoke with my parents and my great grandmother, and they stated that they will return your $70.00. in full. But if you want to take the issue to court or consul. I must inform you.
My great grandfather's estate is worth $56,000,000.00. And my great grandmother will do what ever she has too, to protect his name.
Thank You
Joe
PS:
It is I, which is using my great grandfather's things, since most of it was willed to me.
The truth is something that you have a problem with
It was I, Joseph, Ivey's great grandson that sent you the email. And my great grandfather did past away.
There is no need to cruel about this matter. My great grandfather wanted to finish the project, but he could not. I even took over for him. But my schooling and school activities got in the way.
As far as funds are concern, you only paid $70.00 dollars of the asking price of $300.00. My great grandfather informed me that he was so upset that he could not finish it on time, that he offered to complete the project at no additional charge, because he felt that he would not get another chance to use all of his electronic components in the future years due to his condition, and he felt that you were worth it.
I am sorry that the project was not completed; as was my great grandfather. But he was old, and could not stop what was happening to him.
I spoke with my parents and my great grandmother, and they stated that they will return your $70.00. in full. But if you want to take the issue to court or consul. I must inform you.
My great grandfather's estate is worth $56,000,000.00. And my great grandmother will do what ever she has too, to protect his name.
Thank You
Joe
PS:
It is I, which is using my great grandfather's things, since most of it was willed to me.
Mr Buallard
I have spoke with my parents on the issue of the unfinished phono amp, and I will see if they are willing to part with it, as is.
I will contact you at a later date
Joe
I have spoke with my parents on the issue of the unfinished phono amp, and I will see if they are willing to part with it, as is.
I will contact you at a later date
Joe
absolutely unbelievable.
rather than address the untruths in the thread, I will move forward with legal action.
2 years is ridiculous.
also.. if this is the "grandson"
why couldnt you start your own DIY audio account?
the whole thing reeks to high heaven.
56 million? if I had that amount of money, rather than pay an attorney to fight a losing battle, id pay a designer to finish what was promised.
Cruel? cruel is 2 years of waiting with money tied up and excuses.
DIY Audio, sorry for cluttering up the forum. Just be warned.
rather than address the untruths in the thread, I will move forward with legal action.
2 years is ridiculous.
also.. if this is the "grandson"
why couldnt you start your own DIY audio account?
the whole thing reeks to high heaven.
56 million? if I had that amount of money, rather than pay an attorney to fight a losing battle, id pay a designer to finish what was promised.
Cruel? cruel is 2 years of waiting with money tied up and excuses.
DIY Audio, sorry for cluttering up the forum. Just be warned.
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This has gone far beyond the nature of these forums. We ask that you conduct further discussions offline. The thread is closed for the time being.
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