Hi Sukandar > I'm new to this list. Here's my question: I have a board with what I > think is called a vacuum fluorescent display. It's control by two > 40-pin DIP ICs - one is labelled 9051B from NEC, the other +B9052 from > National Semi. > I did a fair amount of web research, but no luck so far in finding any > datasheets.
In fact I didn't find any reference to the chip numbers you mentioned. But be aware of the possibility that the codes 9051 and 9052 can be production data, i.e. the weeks 51 and 52 of 1990. BTW, in your text you wrote 9051, but in the subject 9501. Which one is right? Try to find other production time information p.e. on other chips on the board. Sometimes the design date of the board is printed on the component side. Also the typenumber of the fluorescent display can help. Probably a replacement driver can be found. As these displays can work with a rather high voltages one IC can control the positive side and the other the ground side. It is best to repeat your question and giving as much information as you can about the object you are involved with. Greeting, Harry -- Author: H.C. Croon INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
