pinouts for L120AB ic

  • Thread starter Michael Phillips
  • Start date
M

Michael Phillips

Guest
Hi,
I let the smoke out of an IC on an induction motor speed control board.
The IC is discontinued and is an SGS manufacture. Its a zero crossing triac
driver. I am unable to find the pinouts or a schematic for it despite
having googled all over the place. Can anyone help with this? If you email
me please remove one of the three 'l's in the email address.
thanks,
Mike
 
On 1 Jun, 07:09, Michael Phillips <mphilllipsaustra...@hotmail.com>
wrote:
Hi,
I let the smoke out of an IC on an induction motor speed control board.
The IC is discontinued and is an SGS manufacture. Its a zero crossing triac
driver. I am unable to find the pinouts or a schematic for it despite
having googled all over the place. Can anyone help with this? If you email
me please remove one of the three 'l's in the email address.
thanks,
Mike
Click to expand...
I googled in the UK and found this one for Ł29...
http://www.cricklewoodelectronics.com/Cricklewood/home.php?cat=226&js=n&xid=64b188e2539fa97577ca591d7008a3d4
Hope it helps
Pete
 
On Fri, 1 Jun 2007 13:40:44 +0000 (UTC), Michael Phillips <noone@nowhere.net>
wrote:

peter.farthing@tesco.net wrote in
news:1180700484.802840.242810@o5g2000hsb.googlegroups.com:

On 1 Jun, 07:09, Michael Phillips <mphilllipsaustra...@hotmail.com
wrote:
Hi,
The IC is discontinued and is an SGS manufacture. Its a zero
crossing triac
driver. I am unable to find the pinouts or a schematic for it despite
having googled all over the place. Can anyone help with this?

I googled in the UK and found this one for Ł29...
http://www.cricklewoodelectronics.com/Cricklewood/home.php?cat=226&js=n
&xid=64b188e2539fa97577ca591d7008a3d4 Hope it helps
Pete


Thanks Pete. 29quid is a bit steep for an ic that cost about 2 quid when
in common use. Alternatives do exist such as the OM5428 at I believe
modest cost but from examination of the damaged pc board pinouts seem to be
different. I'd like to modify the board for an om5428 (or another similar
ic) but I cannot fathom all the pinouts from examination of the board -
hence the desire for a schematic or datasheet for the L120AB. But thanks
anyway.
Mike
Click to expand...
We used to use them, 'might' have one or two around, I'll have to look.

Pin 1 is Input
Pin 2 is Current ref
Pin 3 is 0V
Pin 4 is Volt Ref
Pin 5 is Output

We have the SGS-Thomson 1992 App's guide with the circuits etc.

Peter
--
Peter A Forbes
Prepair Ltd, Luton, UK
prepair@easynet.co.uk
http://www.prepair.co.uk
 
On Fri, 01 Jun 2007 15:30:24 +0100, Prepair Ltd <prepair@easynet.co.uk> wrote:

On Fri, 1 Jun 2007 13:40:44 +0000 (UTC), Michael Phillips <noone@nowhere.net
wrote:

peter.farthing@tesco.net wrote in
news:1180700484.802840.242810@o5g2000hsb.googlegroups.com:

On 1 Jun, 07:09, Michael Phillips <mphilllipsaustra...@hotmail.com
wrote:
Hi,
The IC is discontinued and is an SGS manufacture. Its a zero
crossing triac
driver. I am unable to find the pinouts or a schematic for it despite
having googled all over the place. Can anyone help with this?

I googled in the UK and found this one for Ł29...
http://www.cricklewoodelectronics.com/Cricklewood/home.php?cat=226&js=n
&xid=64b188e2539fa97577ca591d7008a3d4 Hope it helps
Pete


Thanks Pete. 29quid is a bit steep for an ic that cost about 2 quid when
in common use. Alternatives do exist such as the OM5428 at I believe
modest cost but from examination of the damaged pc board pinouts seem to be
different. I'd like to modify the board for an om5428 (or another similar
ic) but I cannot fathom all the pinouts from examination of the board -
hence the desire for a schematic or datasheet for the L120AB. But thanks
anyway.
Mike

We used to use them, 'might' have one or two around, I'll have to look.

Pin 1 is Input
Pin 2 is Current ref
Pin 3 is 0V
Pin 4 is Volt Ref
Pin 5 is Output

We have the SGS-Thomson 1992 App's guide with the circuits etc.

Peter
Click to expand...
Ignore that, wrong IC!!

Still checking...

Peter
--
Peter A Forbes
Prepair Ltd, Luton, UK
prepair@easynet.co.uk
http://www.prepair.co.uk
 
On Fri, 1 Jun 2007 13:40:44 +0000 (UTC), Michael Phillips <noone@nowhere.net>
wrote:
Thanks Pete. 29quid is a bit steep for an ic that cost about 2 quid when
in common use. Alternatives do exist such as the OM5428 at I believe
modest cost but from examination of the damaged pc board pinouts seem to be
different. I'd like to modify the board for an om5428 (or another similar
ic) but I cannot fathom all the pinouts from examination of the board -
hence the desire for a schematic or datasheet for the L120AB. But thanks
anyway.
Mike
Click to expand...
What is different to the basic L120 ?

Have got that data sheet, 16-pin scr/triac driver/controller?

Peter
--
Peter A Forbes
Prepair Ltd, Luton, UK
prepair@easynet.co.uk
http://www.prepair.co.uk
 
peter.farthing@tesco.net wrote in
news:1180700484.802840.242810@o5g2000hsb.googlegroups.com:

On 1 Jun, 07:09, Michael Phillips <mphilllipsaustra...@hotmail.com
wrote:
Hi,
The IC is discontinued and is an SGS manufacture. Its a zero
crossing triac
driver. I am unable to find the pinouts or a schematic for it despite
having googled all over the place. Can anyone help with this?

I googled in the UK and found this one for Ł29...
http://www.cricklewoodelectronics.com/Cricklewood/home.php?cat=226&js=n
&xid=64b188e2539fa97577ca591d7008a3d4 Hope it helps
Pete
Click to expand...
Thanks Pete. 29quid is a bit steep for an ic that cost about 2 quid when
in common use. Alternatives do exist such as the OM5428 at I believe
modest cost but from examination of the damaged pc board pinouts seem to be
different. I'd like to modify the board for an om5428 (or another similar
ic) but I cannot fathom all the pinouts from examination of the board -
hence the desire for a schematic or datasheet for the L120AB. But thanks
anyway.
Mike
 
What is different to the basic L120 ?

Have got that data sheet, 16-pin scr/triac driver/controller?

Peter
--
Peter A Forbes
Prepair Ltd, Luton, UK
prepair@easynet.co.uk
http://www.prepair.co.uk
Click to expand...
There may well be no difference - at least in pinouts. it sounds a very
similar device - 16 pin triac driver/controller with zero crossing
triggering capability. Possibly slightly different voltage/current ratings
etc? If you have a data sheet for the L120 I'd be glad to have a look at
that. The only pin I'm reasonably certain of is the trigger output, pin 7
on the l120ab.
 
On Sat, 2 Jun 2007 09:24:26 +0000 (UTC), Michael Phillips <noone@nowhere.net>
wrote:

What is different to the basic L120 ?

Have got that data sheet, 16-pin scr/triac driver/controller?

Peter
--
Peter A Forbes
Prepair Ltd, Luton, UK
prepair@easynet.co.uk
http://www.prepair.co.uk

There may well be no difference - at least in pinouts. it sounds a very
similar device - 16 pin triac driver/controller with zero crossing
triggering capability. Possibly slightly different voltage/current ratings
etc? If you have a data sheet for the L120 I'd be glad to have a look at
that. The only pin I'm reasonably certain of is the trigger output, pin 7
on the l120ab.
Click to expand...
Pin 1 Ramp Voltage
Pin 2 Amplifier Output
Pin 3 Non-Inv Amplifier Output
Pin 4 DC ref Voltage
Pin 5 Inv Amplifier Input
Pin 6 Stabilised DC Supply
Pin 7 Gate Pulse Output
Pin 8 Positive Rectifier Supply
Pin 9 AC Supply
Pin 10 Negative Rectifier Supply
Pin 11 Chopper
Pin 12 Ground
Pin 13 Ground
Pin 14 NC
Pin 15 Output Logic Circuit
Pin 16 Current Generator

These are the pin descriptions from the data sheet.

Let me have your email address (mine is a valid reply-to) and I'll send you the
pdf file.

Peter
--
Peter A Forbes
Prepair Ltd, Luton, UK
prepair@easynet.co.uk
http://www.prepair.co.uk
 
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