Thanks Dave. I am looking for 112N Bert In a message dated 8/3/2009 7:25:56 P.M. Eastern Daylight Time, [email protected] writes:
> Date: Mon, 3 Aug 2009 12:36:40 EDT > From: [email protected] > Subject: Re: [time-nuts] Method for comparing oscillators <snip> > My goal is to keep the total material cost below $200. I have received > valuable suggestions from Bruce, some I am incorporating as long as it > does > stay with in the $ 200.00. I am a strong believer in KISS and have almost > completed the total PC layout. All IC's are DIP! The board is partitioned > in > such a way that it can be cut up in three sections or be left as one. Two > parts are Isolation amplifiers and mixer with all associated circuits the > third section separating the two sides is the counter. Price quote for > the > board is $ 22.00 in fifty and $ 30.00 in ten quantity. When complete and > tested all information will be made available to every one. The only > component > I have trouble buying is the 74 AC 112. Newark has them, but you have to > buy thousands. Material cost based on part searches is below $ 200.00. > Let me make clear I am not trying to push the limits of technology but > take > a conservative and KISS approach. Many will be able to make meaningful > tests where the limit will be their sources not the test set up. > What is missing is the two u Processor choices and the programming. I have > only limited knowledge in that field. I am looking for some one that is > willing to perform that task. The proper u Processors need to be picked > and > they will have to be programmed. Two of the identical three may be > something > like the PIC 1220. Once selected I can complete the board and order > prototypes. The programming should be simple, but that is easy to say for > someone > that never had to do so. Any body willing to help, please contact me. > Obviously PC software also has to be created, to use the data from the > five > counters. Any body that will do the programming will be a recipient of a > prototype board. ....<snip> > > Bert Kehren Digikey stocks the 74AC112E, and is available in unit quantities for $0.68 USD each. Price breaks for larger quantities. http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=296-4223-5- ND Dave M _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. **************A Good Credit Score is 700 or Above. See yours in just 2 easy steps! (http://pr.atwola.com/promoclk/100126575x1222846709x1201493018/aol?redir=http://www.freecreditreport.com/pm/default.aspx?sc=668072&hmpgID=115&bcd =JulystepsfooterNO115) _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
