Hi every body I need data sheet of TAG8530 (three pins device) which is used in display moniter. Thanks. Muhammad Naeem Abbas. ...
4500
Friedel Bruening
bolinst@...
Jan 3, 2003 2:15 pm
I don't have a datasheet, but I believe it's a thyristor, may be a fast type for like 15kHz switching. What is the case type ? Friedel ... -- Author: Friedel...
4501
DBob
sana@...
Jan 4, 2003 5:47 am
Hi, I like to use the Horowitz notch filter for 50 Hz interference rejection. Could you send me a schematics and corresponding relantionship for components...
4502
rhonn tabanao
rbtabanao@...
Jan 5, 2003 10:34 am
hi LIST, My friend brought me a used APC BACK-UPS 600 from USA. Upon openning the unit I found out that the two 6 volts battery are dead. I connected it to my...
4503
Immar Puun
ipuun@...
Jan 5, 2003 12:22 pm
... Hi Ronnie, this is simplest thing, find 120v ->220v transformer. Connect it to output of the UPS. As this UPS was brought from USA. it may have 60 Hz...
4504
Syd Levine (AnaLog)
AnaLog@...
Jan 5, 2003 7:30 pm
We need a high voltage MOSFET in the smallest possible package. We are currently using the International Rectifier IRFBF20S rated at 900v in the "D" pack, but...
4505
TQuiroz@...
Jan 5, 2003 10:10 pm
Any reason why you could not use IGBTs? Tony...
4506
Syd Levine (AnaLog)
AnaLog@...
Jan 5, 2003 10:55 pm
I honestly do not know any reason why not. Are there such devices for 1000 volta and above that are small? ... From: TQuiroz@... To: Multiple recipients...
4507
rhonn tabanao
rbtabanao@...
Jan 6, 2003 6:00 am
yes tried that before, but since the output and input are all 120VAC, you have to use 2 transformer at once. one is is step down 220VAC - 120VAC and another...
4508
Declan Moriarty
tech.genius@...
Jan 6, 2003 10:14 am
On Sunday 05 January 2003 10:08, somebody wrote ... American designs rarely acknowledge the needs of 'the small little bit of the world that's outside America'...
4509
Edi Im Hof
edi.imhof.ml@...
Jan 6, 2003 10:54 am
... Generally. you are right but you can buy this unit also for 230V, so i suppose the chnges are minor. For the input, I suppose thr transformator has two...
4510
TQuiroz@...
Jan 6, 2003 3:04 pm
Glancing at my IXys databook I can spot a few that can handle at least a Vces=1000V and Ic=75A in a TO247, TO268 (surface mount) and miniBLOC packages. More...
4511
Declan Moriarty
tech.genius@...
Jan 6, 2003 3:44 pm
On Monday 06 January 2003 10:38, somebody wrote ... I did qualify my sweeping insult with a 'rarely'. I'm not intending to insult anyone, just stating my...
4512
Robert Ritchey
RRRitchey@...
Jan 6, 2003 4:21 pm
Hi all, I wondered if anyone had a solution for a remote that seems to have worn out some of its keys. I took it apart, cleaned the keyboard and flexible...
4513
TQuiroz@...
Jan 6, 2003 6:06 pm
Hi Bob, Here is a trick that might work, at least it works with regular TV type of remotes. Use a pencil with a soft lead to "write" on the conductive...
4514
Christian Diefenbach
chris@...
Jan 6, 2003 6:38 pm
If you want to try a solution with more manual work, glue (carefully) small pieces of aluminum foil over the worn keys. Worked for me with an old calculator......
4515
Syd Levine (AnaLog)
AnaLog@...
Jan 6, 2003 8:45 pm
A repair paint is sold, but I forget whose catalog I saw it in. But before spending money, try cleaning the traces first. A pencil eraser will polish em up....
4516
Robert Ritchey
RRRitchey@...
Jan 6, 2003 9:47 pm
Syd, The PCB is not like I am used to seeing with copper there, it has what looks like a graphite on top of the PCB. This is not oxidized copper but has some...
4517
Syd Levine (AnaLog)
AnaLog@...
Jan 6, 2003 10:22 pm
You sure it's sposed to be there? ... To: "Multiple recipients of list CHIPDIR-L" <CHIPDIR-L@...> Sent: Monday, January 06, 2003 3:59 PM ... before ......
4518
Robert Ritchey
RRRitchey@...
Jan 6, 2003 10:53 pm
Yes, its not build up of any kind. Its very well patterned and consistent. ... -Bob ... Robert Ritchey Quest Engineering & Development 1328 East Cottonwood...
4519
Mircea Coman
mircom@...
Jan 7, 2003 7:46 am
I usually clean the PCB and the rubber keys using a liquid detergent and wash with plenty of water. I do this because the circuit is getting dirty with a kind ...
4520
TQuiroz@...
Jan 7, 2003 1:17 pm
... consistent." Looks like embedded resistors to me. Key decoding must be a function of the resistance path. I've seen this on older Panasonic TVs. Mind you,...
4521
Robert Ritchey
RRRitchey@...
Jan 7, 2003 4:01 pm
Tony, A lot, quick count says about 46 or so. ... -Bob ... Robert Ritchey Quest Engineering & Development 1328 East Cottonwood Lane Phoenix, AZ 85048-4765 ...
4522
Tinco Brouwer
tjfb@...
Jan 7, 2003 5:02 pm
... This page gives info about repairing remotes. ... Regards, Tinco. -- Author: Tinco Brouwer INET: tjfb@... Fat City Network Services --...
4523
Robert Ritchey
RRRitchey@...
Jan 7, 2003 5:57 pm
Tinco, Thank you very much for the references. ... -Bob ... Robert Ritchey Quest Engineering & Development 1328 East Cottonwood Lane Phoenix, AZ 85048-4765 ...
4524
rhonn tabanao
rbtabanao@...
Jan 8, 2003 12:55 am
Well I dissected the unit full out the transformer,supply its primary with 120VAC and found out that its secondary to be 22VAC center tapped (11-0-11)VAC...
4525
Jeffrey Meade
aa900@...
Jan 8, 2003 6:12 am
In 1977 at NCR, we used an electron microscope to study the thermal activity within an IC and on foil paths. The quality assurance team used the electron...
4526
Jeremy Proffitt
rebel.tech@...
Jan 10, 2003 1:46 am
About a year ago I sent an e-mail to this group with great replys about a project - a simple asynchronous logic analyzer. A year later, I've finally moved to...
4527
Jeremy Proffitt
rebel.tech@...
Jan 10, 2003 2:09 am
Update: I found the problem. I was using Pericom's 74FCT521 with TI's 74HCT164's. I changed it all over to TI's HCT devices and it works now. It's kinda...
4528
Jens Schönfeld
mail@...
Jan 10, 2003 3:11 am
... They should, yes. I'm not sure if this was the real cause of your fault. I think this is a typical setup&hold problem. If your combinatorial input to the...
