Please give function of C5185C chip

kelticwizard · 30th May 2005, 10:28 PM

Okay, this isn't audio but it is electronic parts, so I stuck it here.

This is a control system out of a car.

A) Can anyone tell me what the function of the C5185C chip is here-the one with the big X on the left?

The three terminal chip is a Motorola D45H11, and is a transistor.

B) What is that long wirewound thing on the left-a wirewound resistor? It's labelled A3. Seems to be about 2 inches long.

I've built some small amps and signal generators, but as you can see, there are some large gaps in the knowledge.

kelticwizard · 30th May 2005, 11:03 PM

By the way, when I say "function", I do not mean specifically in this circuit.

I mean what does a C5185C do? Is it a power supply chip, a microcontroller, or what?

I googled and all I came across was places that had the chip, without going into specifics as to what kind of chip it was.

Any general guidelines here would be appreciated. Thanks.

pinkmouse · 30th May 2005, 11:18 PM

Try Alldatasheet. I searched under 5185 and got a selection of devices. Now all you have to do is download the datasheets and compare pin numbers etc.

pinkmouse · 30th May 2005, 11:21 PM

BTW, what exactly did this circuit do?

davesaudio · 31st May 2005, 12:13 AM

My guess (only a guess ) looks like an exar chip
exar makes function generators /timers?

the other "thing" - resistor or delay line?

a good mystery and better than TV

Leolabs · 1st June 2005, 01:13 AM

try www.datasheetarchive.com

kelticwizard · 1st June 2005, 02:57 AM

Thanks, guys, but neither one of those links seemed to lead to the chip in question. I almost feel like emailing one of the houses that sells the chip just to find out what it is, lol.

The board in question is from a seat belt controller system from an old Ford. Those models had a shoulder belt system where the top seat belt anchor slides forward along a track to allow the driver and passengers to leave and get into the car, then slides back and belts them in when the doors are closed and the car is ready to be driven.

The system frequently malfunctions, as is happening here. although I don't think it's the controller board-I think it is a relay component integral with a slightly broken lock.

Anyway, thanks for the effort and tips.

And yes, I do wonder what that slender wirewound thing is. Hmmmm.....

ocool_15 · 1st June 2005, 12:14 PM

well a wire wound thingy is generally
Inductor
wirewound resistor
Antenna

I wound guess its a inductor, I dont see why you would need a antenna in that application, though the shape is more indicative of being an antenna to me.

davesaudio · 1st June 2005, 03:26 PM

If there are no switches for end travel than maybe it is the
inductor/resistor across which current spike sensed, indicating end of travel/ motor stall

cpemma · 1st June 2005, 08:59 PM

I suspect most of these chips you can only find at hkinventory and the like are custom-made to do a job it might otherwise take 2 or 3 to do. It's not all that expensive if you want a few tens of thousands...like Ford.

I tried to trace one I found in a PC case fan - several listings, no (free) details or (free) datasheet.

30th May 2005, 11:03 PM	#2
kelticwizard diyAudio Member Join Date: Sep 2001 Location: Connecticut, The Nutmeg State	By the way, when I say "function", I do not mean specifically in this circuit. I mean what does a C5185C do? Is it a power supply chip, a microcontroller, or what? I googled and all I came across was places that had the chip, without going into specifics as to what kind of chip it was. Any general guidelines here would be appreciated. Thanks. __________________ "A friend will help you move. A really good friend will help you move a body." -Anonymous

30th May 2005, 11:18 PM	#3
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Try Alldatasheet. I searched under 5185 and got a selection of devices. Now all you have to do is download the datasheets and compare pin numbers etc. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

30th May 2005, 11:21 PM	#4
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	BTW, what exactly did this circuit do? __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

31st May 2005, 12:13 AM	#5
davesaudio diyAudio Member Join Date: Feb 2003 Location: GTA	My guess (only a guess ) looks like an exar chip exar makes function generators /timers? the other "thing" - resistor or delay line? a good mystery and better than TV __________________ intentionally blank

1st June 2005, 02:57 AM	#7
kelticwizard diyAudio Member Join Date: Sep 2001 Location: Connecticut, The Nutmeg State	Thanks, guys, but neither one of those links seemed to lead to the chip in question. I almost feel like emailing one of the houses that sells the chip just to find out what it is, lol. The board in question is from a seat belt controller system from an old Ford. Those models had a shoulder belt system where the top seat belt anchor slides forward along a track to allow the driver and passengers to leave and get into the car, then slides back and belts them in when the doors are closed and the car is ready to be driven. The system frequently malfunctions, as is happening here. although I don't think it's the controller board-I think it is a relay component integral with a slightly broken lock. Anyway, thanks for the effort and tips. And yes, I do wonder what that slender wirewound thing is. Hmmmm..... __________________ "A friend will help you move. A really good friend will help you move a body." -Anonymous


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

1st June 2005, 01:13 AM	#6
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	try www.datasheetarchive.com

1st June 2005, 12:14 PM	#8
ocool_15 diyAudio Member Join Date: Nov 2004 Location: sk	well a wire wound thingy is generally Inductor wirewound resistor Antenna I wound guess its a inductor, I dont see why you would need a antenna in that application, though the shape is more indicative of being an antenna to me.

1st June 2005, 03:26 PM	#9
davesaudio diyAudio Member Join Date: Feb 2003 Location: GTA	If there are no switches for end travel than maybe it is the inductor/resistor across which current spike sensed, indicating end of travel/ motor stall __________________ intentionally blank

1st June 2005, 08:59 PM	#10
cpemma diyAudio Member Join Date: Jul 2003 Location: S Yorkshire OK	I suspect most of these chips you can only find at hkinventory and the like are custom-made to do a job it might otherwise take 2 or 3 to do. It's not all that expensive if you want a few tens of thousands...like Ford. I tried to trace one I found in a PC case fan - several listings, no (free) details or (free) datasheet.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
is there a chip amp that will give me 50 watts of power	merickrc	Chip Amps	30	13th March 2009 02:09 PM
WTB MAX038 DIP function gen chip	neutron7	Swap Meet	0	4th March 2006 02:53 AM
i give up	theChris	Everything Else	4	5th June 2003 07:01 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read