Thank you, yes it is a 2N4091, my fingers are getting bad. I think I am going to try a TIP122, I have plenty of TIP31C's, to much trouble and money for a single 2N4091 when you take into consideration the age of the unit and lamp voltage shows 6 volt. Bert Kehren In a message dated 3/13/2011 9:02:21 P.M. Eastern Daylight Time, mi...@flatsurface.com writes:
At 07:30 PM 3/13/2011, ewkeh...@aol.com wrote... >On one of my older FRS I tightened the cover to much blowing in the >process > the TIP 31 and the 2N4021. Any idea where to get a 2N4021 or what > would be >a substitute. I think it's a 2n4091, from the parts list and schematic. 2N4021 is a PNP bipolar, 2N4091 is a N-Channel JFET. 2n4091 is available here: http://store.americanmicrosemiconductor.com/2n4091.html I'd think a 2n4392 would work, Mouser has 'em, along with the TIP31B. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.