chipdir-l : Messages : 4499-4528 of 7276

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4499	Hi every body I need data sheet of TAG8530 (three pins device) which is used in display moniter. Thanks. Muhammad Naeem Abbas. ...	muhammad abbas mnaeemabbas@...	Jan 3, 2003 10:50 am
4500	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...	Friedel Bruening bolinst@...	Jan 3, 2003 2:15 pm
4501	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...	DBob sana@...	Jan 4, 2003 5:47 am
4502	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...	rhonn tabanao rbtabanao@...	Jan 5, 2003 10:34 am
4503	... 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...	Immar Puun ipuun@...	Jan 5, 2003 12:22 pm
4504	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...	Syd Levine (AnaLog) AnaLog@...	Jan 5, 2003 7:30 pm
4505	Any reason why you could not use IGBTs? Tony...	TQuiroz@...	Jan 5, 2003 10:10 pm
4506	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...	Syd Levine (AnaLog) AnaLog@...	Jan 5, 2003 10:55 pm
4507	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...	rhonn tabanao rbtabanao@...	Jan 6, 2003 6:00 am
4508	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'...	Declan Moriarty tech.genius@...	Jan 6, 2003 10:14 am
4509	... 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...	Edi Im Hof edi.imhof.ml@...	Jan 6, 2003 10:54 am
4510	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...	TQuiroz@...	Jan 6, 2003 3:04 pm
4511	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...	Declan Moriarty tech.genius@...	Jan 6, 2003 3:44 pm
4512	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...	Robert Ritchey RRRitchey@...	Jan 6, 2003 4:21 pm
4513	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...	TQuiroz@...	Jan 6, 2003 6:06 pm
4514	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......	Christian Diefenbach chris@...	Jan 6, 2003 6:38 pm
4515	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....	Syd Levine (AnaLog) AnaLog@...	Jan 6, 2003 8:45 pm
4516	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...	Robert Ritchey RRRitchey@...	Jan 6, 2003 9:47 pm
4517	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 ......	Syd Levine (AnaLog) AnaLog@...	Jan 6, 2003 10:22 pm
4518	Yes, its not build up of any kind. Its very well patterned and consistent. ... -Bob ... Robert Ritchey Quest Engineering & Development 1328 East Cottonwood...	Robert Ritchey RRRitchey@...	Jan 6, 2003 10:53 pm
4519	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 ...	Mircea Coman mircom@...	Jan 7, 2003 7:46 am
4520	... 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,...	TQuiroz@...	Jan 7, 2003 1:17 pm
4521	Tony, A lot, quick count says about 46 or so. ... -Bob ... Robert Ritchey Quest Engineering & Development 1328 East Cottonwood Lane Phoenix, AZ 85048-4765 ...	Robert Ritchey RRRitchey@...	Jan 7, 2003 4:01 pm
4522	... This page gives info about repairing remotes. ... Regards, Tinco. -- Author: Tinco Brouwer INET: tjfb@... Fat City Network Services --...	Tinco Brouwer tjfb@...	Jan 7, 2003 5:02 pm
4523	Tinco, Thank you very much for the references. ... -Bob ... Robert Ritchey Quest Engineering & Development 1328 East Cottonwood Lane Phoenix, AZ 85048-4765 ...	Robert Ritchey RRRitchey@...	Jan 7, 2003 5:57 pm
4524	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...	rhonn tabanao rbtabanao@...	Jan 8, 2003 12:55 am
4525	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...	Jeffrey Meade aa900@...	Jan 8, 2003 6:12 am
4526	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...	Jeremy Proffitt rebel.tech@...	Jan 10, 2003 1:46 am
4527	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...	Jeremy Proffitt rebel.tech@...	Jan 10, 2003 2:09 am
4528	... 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...	Jens Sch�nfeld mail@...	Jan 10, 2003 3:11 am

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