|
Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
|
Thread Tools |
11th Sep 2015, 10:58 pm | #81 |
Heptode
Join Date: Dec 2010
Location: Barnstaple, N.Devon, UK.
Posts: 557
|
Re: HH TPA series Power Amplifiers.
Hi again Kamran. Your last post came in at 8:52 pm here to give you an idea of the time difference. No teetoon isn't my name it's a nickname given to me by my father (long story).
Anyway here are some pics of the TPA 100D and a pic of the schematic. Sorry I don't have a scanner> David. |
12th Sep 2015, 6:59 am | #82 |
Triode
Join Date: Sep 2015
Location: Lahore, Punjab, Pakistan.
Posts: 25
|
Re: HH TPA series Power Amplifiers.
Sir, i have no words how to say you thank you. I just wants to say it was one of my great wish fulfilled just because of you thanks again.
|
12th Sep 2015, 10:25 am | #83 |
Triode
Join Date: Sep 2015
Location: Lahore, Punjab, Pakistan.
Posts: 25
|
Re: HH TPA series Power Amplifiers.
Sir , just last thing is that can you upload schematic in better resolution because its very difficult to read the details of parts thanks.
|
12th Sep 2015, 11:05 am | #84 |
Moderator
Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,943
|
Re: HH TPA series Power Amplifiers.
David, if you put the schematic image in a PDF or zip it, the forum software won't resize the image and the original resolution will be maintained.
|
12th Sep 2015, 11:37 pm | #85 |
Heptode
Join Date: Dec 2010
Location: Barnstaple, N.Devon, UK.
Posts: 557
|
Re: HH TPA series Power Amplifiers.
Right, thanks for that Paul. I do have the manuals somewhere on this computer but I'm not sure how to go about uploading them.
Actually, I just tried to upload but the file is too big. 4.5 mb. I'm not sure how to break it up as it's not something I've done before. David. |
13th Sep 2015, 5:39 am | #86 |
Triode
Join Date: Sep 2015
Location: Lahore, Punjab, Pakistan.
Posts: 25
|
Re: HH TPA series Power Amplifiers.
sir, you need to copy files in your computer/ mobile in a separate folder then zip these files using winrar software then it will reduced the size of files, and then you can upload these files like a single file thanks.
|
13th Sep 2015, 3:25 pm | #87 |
Moderator
Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,943
|
Re: HH TPA series Power Amplifiers.
Here is the original document as received by David. I have reduced the quality to fit inside forum limits but it is still perfectly readable.
|
13th Sep 2015, 5:34 pm | #88 |
Octode
Join Date: Aug 2008
Location: Rayleigh near Southend-On-Sea, Essex, UK.
Posts: 1,879
|
Re: HH TPA series Power Amplifiers.
Hello Kamran Yousaf,
I’ve replied to your PM – very sorry for the late reply. I no longer have the TPA amplifiers, but I do have a schematic of the amplifier though. If you PM me your email address I’ll send it to you via email. Regards Terry. |
13th Sep 2015, 6:13 pm | #89 |
Hexode
Join Date: Dec 2012
Location: Carmarthen, Carmarthenshire, UK.
Posts: 268
|
Re: HH TPA series Power Amplifiers.
Hello Terry,
Does the schematic for the TPA amplifiers that you have include the component values? If it does, I would love a copy please. I have an original of the booklet above but it does not include component values. Stuart.
__________________
Half my stuff is junk - luckily, my wife doesn't know which half! |
14th Sep 2015, 8:17 am | #90 |
Octode
Join Date: Aug 2008
Location: Rayleigh near Southend-On-Sea, Essex, UK.
Posts: 1,879
|
Re: HH TPA series Power Amplifiers.
Hi Stuart,
Yes, it does. PM your email address and I’ll pop it over to you. I’ve got to do the same for Kamran. Regards Terry. |
14th Sep 2015, 5:51 pm | #91 |
Hexode
Join Date: Dec 2012
Location: Carmarthen, Carmarthenshire, UK.
Posts: 268
|
Re: HH TPA series Power Amplifiers.
Hi Terry,
PM sent. Stuart.
__________________
Half my stuff is junk - luckily, my wife doesn't know which half! |
14th Sep 2015, 8:17 pm | #92 |
Triode
Join Date: Sep 2015
Location: Lahore, Punjab, Pakistan.
Posts: 25
|
Re: HH TPA series Power Amplifiers.
|
14th Sep 2015, 8:19 pm | #93 |
Triode
Join Date: Sep 2015
Location: Lahore, Punjab, Pakistan.
Posts: 25
|
Re: HH TPA series Power Amplifiers.
Dear all, please guide me about the substitute of bc107 and bc177 thanks.
|
14th Sep 2015, 8:33 pm | #94 |
Moderator
Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,943
|
Re: HH TPA series Power Amplifiers.
These are general purpose NPN/PNP complementary silicon transistors. The modern BC547/BC557 are electrically equivalent.
|
15th Sep 2015, 11:34 am | #95 |
Triode
Join Date: Sep 2015
Location: Lahore, Punjab, Pakistan.
Posts: 25
|
Re: HH TPA series Power Amplifiers.
|
16th Sep 2015, 8:28 am | #96 | |
Triode
Join Date: Sep 2015
Location: Lahore, Punjab, Pakistan.
Posts: 25
|
Re: HH TPA series Power Amplifiers.
Quote:
Here in Pakistan parts availability is main problem. |
|
16th Sep 2015, 10:13 am | #97 |
Dekatron
Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 7,658
|
Re: HH TPA series Power Amplifiers.
Kamran, did you have trouble getting a suitable PCB or did you make it yourself? I can try and send you some transistors but no idea how much it will cost? I suppose getting components from India is problematic.
Andy.
__________________
Curiosity hasn't killed this cat...so far. |
16th Sep 2015, 8:44 pm | #98 |
Triode
Join Date: Sep 2015
Location: Lahore, Punjab, Pakistan.
Posts: 25
|
Re: HH TPA series Power Amplifiers.
Sir, i just remove errors from a ready made PCB available in electronic market hall road may be someone tried to copy but may be left because of errors. But i m so much happy that i have built it using substitutes.
|
18th Sep 2015, 9:20 am | #99 | |
Triode
Join Date: Sep 2015
Location: Lahore, Punjab, Pakistan.
Posts: 25
|
Re: HH TPA series Power Amplifiers.
Quote:
I replace 68 ohm resistors with 180 ohm because with 68 Ohm resistor Base voltages were not generating on the 2 power transistors other than which collectors are directly connected with the VCC. Now the Amp is functional but Power transistors are heating like iron, and i am unable to read schematic that how much volts are mentioned on different points, Please help in this regard Thanks. |
|
19th Sep 2015, 2:33 pm | #100 |
Triode
Join Date: Sep 2015
Location: Lahore, Punjab, Pakistan.
Posts: 25
|
Re: HH TPA series Power Amplifiers.
Sir David,
Can you please explain the highlighted PCB prints (are these disconnected / breakouts). Please see the attachment. |