TA7317P protection IC

[ergo]

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]

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]

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

 

[PH104]

kay

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

Phil

 

[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

 

[stef1777]

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]

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]

Hi.

Used on Sansui R-950AV.

SB.

 

[farjon]

Hi.

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

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

http://downloads.nakedresource.com/download_centre/index.php?onkyo/onkyo_a-8017_service.pdf

SB.

 

[DigitalJunkie]

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/aa154/Nothing40/Random Stuffs/ta7317e.gif
and another
http://i199.photobucket.com/albums/aa154/Nothing40/Random Stuffs/spkprt.jpg

 

[tudorarad]

Also used in the ArcamAlpha One amplifier(also vers. 7 and 8).For manual service :
tudor_x19@yahoo.com

 

[TankAudio]

Hi Guys,

Also used in the JVC R-K100 / R-K100L. Not a great amp by any means, but a learning project none the less.

Download the JVC RK-100 manuals for free - Hifi Manuals

 

[marmotteinoz]

For the sake of the discussion even if 4 years later : used also on Marantz PM80 (MKI and SE - not sure about MKII).
http://www.pascalchour.fr/ressources/marantz/pm80-schema1.jpg

 

[Brian Beck]

Marantz MA-9

And commenting one year later still, there was the mighty Marantz MA-9 that used the TA7317P for protection.