I cant think of any reason why 3amp diodes would cause a problem, and the schematic cant account for a 2-amp difference in current. Notice the 100K resistor from the transformer lead; that means almost zero current. If this is a clock, I suspect that's for the line-frequency reference.
I guess Heathkit had extra 3amp diodes in their inventory ? On Thursday, August 6, 2020 at 7:00:15 AM UTC-7 orange_glow_fan wrote: > > Working on this GC-1195.... > > > I need to replace the diodes in the power supply (along with the two > electrolytic caps. For some reason Heathkit used different diodes for > (D101,102) and (D103,104). > > D101,102 are three amp diodes while D103,104 are 1 amp diodes. It's my > intention to use three amp diodes (NTE-156) to replace all four diodes. > Then self doubt crept in and I am questioning my choice. > > Is there any reason you can think of that you can think of, other than > cost savings, that Heathkit engineers used diodes of differing current > ratings in this full wave bridge? Note that the emitter of Q1 goes off to > power the incandescent bulbs of the display segments. Q1 is sourced from > the center tap of the transformer. > > So, can I simply use 4 three amp diodes or am I missing something?? > > Thanks > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/f0798ee8-259f-4ab4-ab2b-d02da3ce2e69n%40googlegroups.com.
