SAE A502 Keeps smoking protection transistors

[anatech]

Hi Tom,
In some stages, matched resistors are required. Good that you have noticed this!

Congrats on your successful kidney transplants (they last one is a keeper I hope). My cousin has gone through four rejections now, it started when she was in her early 20's. Suffice to say that life pretty much sucks for her. Through all of this, she has held down her own job, bought and maintained her own detached house with no hubby to help her at all. That girl (lady) really deserves a break. I think she just gave up and went off her diet. Can't say as I blame her, she'll be around 50 years old by now. A real trooper and nice to boot.

You have my respect, having gone through some unpleasant times.

Now, back onto the complimentary differential pair you were talking about. All four transistors must be tightly matched to get great performance from these types. That would be SAE, Adcom, Phase Linear, Bryston and a host of others. Do that right and everything else will fall into place. Low DC offset, low distortion and much better sound.

If you get these transistors matched tightly, the match on any resistors in the emitter circuits begin to have an effect. That is a sign of things going right. If these resistors are not matched and they do not affect the offset much, the transistors are not matched close enough for a really good job.

-Chris

[Loud & Clear]

Thanks Chris,

Yes, I started at age 23. I turned 48 2 day's ago. It's been Really tough. My sister started with this at age 11 in 1980. She has had 2 also. She has died twice 2.5 min & 4 min. I have had my chances over 14 times now. My sister & I are both married. It is a rough life, and never certain. I got into bodybuilding, which has helped me more than anything I have done. Give you cousin my best, and tell her to keep pushing forward... Sorry for the Hijack Echo... I'll use the E'mail feature next time...

Love that SAE gear!!!

Best Regards, Tom

[anatech]

Hi Tom,
Thanks and no problem. If you want, you could always begin a new thread as well.

My cousin has given up. Most people can't take her going on her dialysis machine. It can be a bit bloody. I try to stay and talk with her through this. It is a bit much for the average person though.

Keeping a marriage together while going through this is amazing. You and your sister have special people as mates. It's harder to watch someone in this situation than it is mentally for the people who are in the situation. Although I have an idea how it might be for you and your sister, and my own cousin for that matter, no one can know what this is truly like unless they are in the same spot.

Take care Tom, Chris

[Loud & Clear]

It's terrible on both sides of the fence. I have been there. Before I knew I had the disease, we found out my sister had it. The doctor told us, "people with this disease, don't usually live very long lives"... I was mortified. When my sister got her transplant in 1981 I ended up with post traumatic stress syndrome. Then I got the disease. I was only 23, so I didn't have a job with Insurance. So you have to quit work, you have no money, and the medical bills are astronomical. I make 100's of 1000's of dollars each year, for the drug company's, and the medical community. I sometimes wonder if I exist, to make people money, and lots of it. As for myself, I'm medically retired, and I get paid $240.00 per month disability. Yes, $240.00 per month is my salary. If your young, and you get a chronic disease. You are in "Big Trouble" friends!!! My educated, experienced $0.02 on the subject.

Sorry Echo...

Thanks, Tom

P.S. The anti rejection drugs I take, have given me Glaucoma in both eye's, and synthetic diabetes (insulin dependant)...

[anatech]

Hi Tom,
Well, I guess that's another thing we have to add to the list of things the USA doesn't do very well. Whoever thought that medicine for profit was a good idea was either a doctor, or a foreigner. I don't know how else you could attack an entire people so effectively.

I am really very depressed to think of you in that situation. Things are not that bad here. People don't live good lives when they can't work, but at least they aren't driven into the ground.

I guess in the grand scheme of things, you aren't so bad off either. You can probably do something small for extra $$ to make ends meet. Yes, I know very well that it's hard going. Still, there are places in this world where you can't even get the simplest treatment for any money. In those places, life is cheap and not many would notice your passing. I'm not talking about the organizations that will send you a picture of someone you are "saving" for "less than the price of a coffee each day". Seems to me they should have a look around their own areas. Plenty of people need help there (here).

Do your best, you win for every day you are around living. I truly hope you see the day when better support is available to you.

-Chris

[EchoWars]

Originally posted by Loud & Clear
Sorry Echo...

Look at the date for the first post. This thread is a good 2 1/2 years old, which is why the pic is MIA.

[Loud & Clear]

Duh! Thanks for bringing that to my attention...

Yes anatech, The healthcare system in america needs an enema!!! I've been involved in it for a long time. I've seen thing's that even Americans don't believe. America's healthcare system is like a huge machine, the big gears never stop turning, and with each revolution this giant Corrupt machine spits out Trillions of dollars. "Take from the poor, and give to the rich" "It's survival of the fittest". People are loosing there homes, and positions, then living in appartments because they can't pay those Giant numbers. I have to see my nephrologist tomorrow. I call him, "hi & goodbye Hammond". I'll walk in, and he will quickly do his routine, then run like h-ll to his laptop, and put in the $250.00 charge. The visit takes 10-15 minutes tops. These American doctors have beautiful homes, condos, and etc, all over the world. I know all about it. Plus they get a pleasant amount of cash from the drug companies, for prescribing there medications. Everybody is on Lipitor here in the States, or just about. Then you have the big guy (Obama). He's chasing health care reform. So what does he do, he goes after the insurance companys. He also goes after business', to provide insurance to there employees, even if they only have one or two. So the business goes belly up, adding to the unemployment rate. But he Will Not attack the problem at the roots, the healthcare system. Get those HMO's, doctors, and services. Bring those prices Down. They charge 10 times or more money than they should be charging. Then they say, "we have to charge that much, to pay for malpractice insurance". I say, "Don't Malpractice Then"! I could go on, and on, and it gets me nowhere. There is only one word to sum it up "Corrupt". For those in America that don't believe this. Just get real sick, and find out for yourself. Most Americans have No idea what is happening here, and I believe we are on the edge. Gets much worse, and the people will rebel... Only the sick people have no voice in this country, we are treated like second class citizens. Madness!!!

[anatech]

Hi Glenn,
There you are!

Notice that bigyank popped this thread up.

-Chris

[bharper]

I'm sure this was resolved a long time ago, but I did come up with a service manual copy this evening of the A502, and the infamous r243 is shown in the bill of material listing as 1000 ohms, 1/4 watt. Just thought I would complete this thread, I am currently working on an A502 myself.

Brian