TA7317P protection IC

ergo · 21st November 2001, 05:08 PM

I ordered two of these IC's for my two monoblock power amps that are under construction at the moment. As the amp design is my own invention from "head to toe" I want to make sure that if something goes wrong the loss is minimal.

I have one question though. It is regarding to the o/p stage over current detection functionality of this IC. The only datasheet I found was very skinny and had minimal information about suggested application...

Does anyone have any experience how would be the best way to create an over current protection with this IC. I suppose this IC is used in many amps produced over the years. If any of you remember any good solutions for the circuit for Over Current protection then please let me know.

PH104 · 25th November 2001, 02:26 PM

Hi Ergo

I just bought a Parasound HCA3500 to modify and it uses the TA7317 protection IC. Maybe Parasound would cough up a schematic for the 3500. Their service department email and phone numbers are on their website.

I also found a schematic for the internal workings of the TA7317 (but it has no info on how to implement it) and a one-page thing showing the pin-out which is almost useless. I'd be happy to send you these sheets as PDF files if you want.

Also, where did you find the TA7317s to buy? I also thought they would be good for other amp projects plus I wanted to have some backup for the Parasound amp. I searched all over the internet with no luck.

Thanks

Phil

Kay · 26th November 2001, 12:20 AM

Here in Germany their is no problem to buy. See http://www.reichelt.de
NAD use this part too: NAD-214, -216, -2100
regards
Kay

PH104 · 26th November 2001, 12:30 AM

kay

Thanks very much for information. Found it at the website you mentioned.

Phil

ergo · 27th November 2001, 06:29 AM

I finally found a schematic which uses this specific IC

If anyone else out there is stuck with the same problem, feel free to mail me and I will send a sample schematic of how to use the IC.

PS. I got my IC's from Finland and company Suomen Huoltooalvelu OÜ. They have a reseller here in Estonia...

Ergo
ergo.esken@mail.ee

stef1777 · 15th May 2005, 08:00 PM

Quote:

Originally posted by ergo
I finally found a schematic which uses this specific IC

If anyone else out there is stuck with the same problem, feel free to mail me and I will send a sample schematic of how to use the IC.

PS. I got my IC's from Finland and company Suomen Huoltooalvelu OÜ. They have a reseller here in Estonia...

Ergo
ergo.esken@mail.ee

Hi!

The post is old but I need information on this circuit.

I'm collecting schematics on the TA7317. If someone have some, please contact me or directly email to me the schematic part where can be see the TA7317 in situation.

TA7317 is used in this equipements:

Onkyo A-8017
Luxman A-311
Technics SU-V3
Parasound HCA3500
NAD-214
NAD-216 THX
NAD-2100

list not close.

Enzo · 17th May 2005, 05:22 AM

Samson uses it in a number of their power amps. The Servo series in particular. Look for other Japanese designed power amps.

Samson Servo 550 for example

farjon · 3rd December 2008, 08:42 PM

Hi.

Used on Sansui R-950AV.

SB.

farjon · 3rd December 2008, 08:42 PM

Hi.

The Onkyo A-8017 service manual can be found here:

http://www.hifiengine.com/manuals/onkyo/a-8017.shtml

http://downloads.nakedresource.com/d...17_service.pdf

SB.

DigitalJunkie · 3rd December 2008, 09:11 PM

Also used in the Sansui A-1130P amp.(and I'm sure countless others)

I have a couple partial schematics and stuff saved on my PC,I'll have to try to find them again.

Edit:
Here's one http://i199.photobucket.com/albums/a...fs/ta7317e.gif
and another
http://i199.photobucket.com/albums/a...ffs/spkprt.jpg

21st November 2001, 05:08 PM	#1
ergo diyAudio Member Join Date: Mar 2001 Location: Tallinn, Estonia	I ordered two of these IC's for my two monoblock power amps that are under construction at the moment. As the amp design is my own invention from "head to toe" I want to make sure that if something goes wrong the loss is minimal. I have one question though. It is regarding to the o/p stage over current detection functionality of this IC. The only datasheet I found was very skinny and had minimal information about suggested application... Does anyone have any experience how would be the best way to create an over current protection with this IC. I suppose this IC is used in many amps produced over the years. If any of you remember any good solutions for the circuit for Over Current protection then please let me know. __________________ Ergo

26th November 2001, 12:20 AM	#3
Kay diyAudio Member Join Date: Nov 2001 Location: Osnabrueck (Germany)	TA 7317 P Here in Germany their is no problem to buy. See http://www.reichelt.de NAD use this part too: NAD-214, -216, -2100 regards Kay __________________ best regards Kay

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25th November 2001, 02:26 PM	#2
PH104 diyAudio Member Join Date: Nov 2001 Location: New Mexico	Hi Ergo I just bought a Parasound HCA3500 to modify and it uses the TA7317 protection IC. Maybe Parasound would cough up a schematic for the 3500. Their service department email and phone numbers are on their website. I also found a schematic for the internal workings of the TA7317 (but it has no info on how to implement it) and a one-page thing showing the pin-out which is almost useless. I'd be happy to send you these sheets as PDF files if you want. Also, where did you find the TA7317s to buy? I also thought they would be good for other amp projects plus I wanted to have some backup for the Parasound amp. I searched all over the internet with no luck. Thanks Phil

26th November 2001, 12:30 AM	#4
PH104 diyAudio Member Join Date: Nov 2001 Location: New Mexico	kay Thanks very much for information. Found it at the website you mentioned. Phil

27th November 2001, 06:29 AM	#5
ergo diyAudio Member Join Date: Mar 2001 Location: Tallinn, Estonia	I finally found a schematic which uses this specific IC If anyone else out there is stuck with the same problem, feel free to mail me and I will send a sample schematic of how to use the IC. PS. I got my IC's from Finland and company Suomen Huoltooalvelu OÜ. They have a reseller here in Estonia... Ergo ergo.esken@mail.ee

17th May 2005, 05:22 AM	#7
Enzo diyAudio Member Join Date: Sep 2004 Location: Lansing, Michigan	Samson uses it in a number of their power amps. The Servo series in particular. Look for other Japanese designed power amps. Samson Servo 550 for example

3rd December 2008, 08:42 PM	#8
farjon diyAudio Member Join Date: Jul 2003 Location: Rio de Janeiro, RJ	Hi. Used on Sansui R-950AV. SB.

3rd December 2008, 09:11 PM	#10
DigitalJunkie diyAudio Member Join Date: Apr 2003 Location: Portland,Oregon Blog Entries: 4	Also used in the Sansui A-1130P amp.(and I'm sure countless others) I have a couple partial schematics and stuff saved on my PC,I'll have to try to find them again. Edit: Here's one http://i199.photobucket.com/albums/a...fs/ta7317e.gif and another http://i199.photobucket.com/albums/a...ffs/spkprt.jpg