Tips for constructing a good PTP build

[tsutt]

Rp, that looks real nice. What is that clear tubing you are using on some of the component leads?

[rp]

Phil I think it qualifies as real ptp just because there are few interlinking lugs and wires btw a resistor or cap and it's final destination, ie a tube pin, pot, or ground. A lug strip is usually only used to link a voltage divider, filter stage to a plate resistor, or where caps meet, and that will happen in any ptp build.

tsutt, It's Teflon clear tubing. I got from here http://www.percyaudio.com/ on pg2. Careful of the inner diameter, I forgot to check on my last order and now I have a really tight fit with Allen Bradleys.

To the OP you are about to discover how much fun ptp phase inverters are. Think it through and work bottom up. Avoid resistors with short leads, most modern ones, you might have to use 1Ws. Helps to draw it to scale and check the distances by simply placing the parts on the drawing.

stevem great tip this:

Note that as a signal passes on down stream once it has left the plate of a tube and passes through the next coupling cap that plate wire has now become a grid wire, so if need belayout wise make the plate wire section longer to accomplish the build!

[Phil_S]

Phil I think it qualifies as real ptp just because there are few interlinking lugs and wires btw a resistor or cap and it's final destination, ie a tube pin, pot, or ground. A lug strip is usually only used to link a voltage divider, filter stage to a plate resistor, or where caps meet, and that will happen in any ptp build.

It's a very elegant build. Well thought out. I failed to "see" it as you describe. Most PTP is considerably more haphazard in the look.

[Colossal]

Phil I think it qualifies as real ptp just because there are few interlinking lugs and wires btw a resistor or cap and it's final destination, ie a tube pin, pot, or ground. A lug strip is usually only used to link a voltage divider, filter stage to a plate resistor, or where caps meet, and that will happen in any ptp build.

It's a very elegant build. Well thought out. I failed to "see" it as you describe. Most PTP is considerably more haphazard in the look.

I think their are differing, but very acceptable interpretations. RP's build is wired from one point to the next with a minimum of space in between: Point to point, with little to no wire.

[Aurora]

Coloured pencils on paper in full size, - that's what we used to do before layout software became available to everyone....
Then add what others have said about lead lengths, parts placement of input, output, transformers etc etc.
Much easier to correct with an eraser first....