Hi Dallas, no, I do not have a curve tracer but I have an oscilloscope and function generator. What do you suggest?
The +/-15v is really low so I need to do something. If I change to Si, are R207_8 likely to be lower or higher? Regards Lou .............................................................................................................. On 7 Jun 2016 2:26 am, "Dallas Smith" <[email protected]> wrote: > Hi Lou, > > It's normal for some leakage in germanium transistors. Do you have a curve > tracer? > If you change them to Si you will have to re-bias them (i.e. R207_8). > The 84 Hz may change also, might have to adjust C203. > But should be possible. > > Dallas > > > On 6/6/2016 7:33 AM, Lou Amadio wrote: > >> For Dallas Smith >> Thanks for the info. It is in keeping with the original design. >> My 845AB 15v supplies are currently down and I suspect the germanium >> transistors around T202 may be leaky?. >> Am thinking of replacing them with Si transistors. Your thoughts? >> Regards, Lou >> >> On Mon, Jun 6, 2016 at 12:35 PM, Dallas Smith <[email protected]> >> wrote: >> >> Hi Lou, >>> >>> Its been awhile since I made this mod, but I had the foresight to save >>> the >>> project to K04BB's site. >>> >>> K04BB /Fluke/Fluke 845A AB < >>> >>> http://www.ko4bb.com/getsimple/index.php?id=manuals&dir=Fluke/Fluke_845A_AB >>> Still works great, hope you have the same results. >>> >>> Dallas >>> >>> _______________________________________________ > volt-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
