TomMcNally wrote:Very nice job !
Is that a Velleman time delay relay board ?
TomMcNally wrote:Very nice job !
Is that a Velleman time delay relay board ?
Ty_Bower wrote:A very fine looking build, if I may say so. I wish I could get mine to that stage. I'm trying to build nearly the same amps (SDS cap board, Poseidon driver) the difference being mine are on original Dynaco chassis and iron. I also seem to lack enough time to finish the wiring.
Let us know how it turns out. I'm particularly interested in your choice of AF and PI tubes. Your photos suggest a 12AX7 and a 12AU7. I'm hoping to run a 5751 and a 12BH7 in mine, built per Ned's schematic.
And where'd you get those plugs to fill the can cap hole?
hilldweller wrote:Is your choice for using 5751 & 12BH7 for a particular reason, such as higher gain???
[snip]
If you can tell me why you wish to use the Ned tube set-up, I would really like to know. Thanks for you interest! Yellow_Light_Colorz_PDT_12
hilldweller wrote:TomMcNally wrote:Very nice job !
Is that a Velleman time delay relay board ?
No, I got them on Ebay For $15.00 Ea. See Link.
http://cgi.ebay.com/Power-Supply-Delay- ... dZViewItem
Slartibartfast wrote:hilldweller wrote:TomMcNally wrote:Very nice job !
Is that a Velleman time delay relay board ?
No, I got them on Ebay For $15.00 Ea. See Link.
http://cgi.ebay.com/Power-Supply-Delay- ... dZViewItem
Where did you add this to the circuit. I would like to add one of these to my ST 70, but his directions were not to clear.
Thanks,
Robert
Ty_Bower wrote:I'm staring at your under-chassis wiring photos. I see what looks like four ceramic disc capacitors. Two near the power cord (off ground and neutral?), one across the diode for the bias supply, and one from the yellow-striped green wire (heater center tap) to ground.
Any comments? I think only the last one appears in the original Dynaco schematic.
Ty_Bower wrote:I'm staring at your under-chassis wiring photos. I see what looks like four ceramic disc capacitors. Two near the power cord (off ground and neutral?), one across the diode for the bias supply, and one from the yellow-striped green wire (heater center tap) to ground.
Any comments? I think only the last one appears in the original Dynaco schematic.
hilldweller wrote:Screen resistor to protect the $$$ KT-88s
Eliminates screen instabilities. I found this somewhere on this forum. Yellow_Light_Colorz_PDT_12
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