220 OHM CARBON COMP. RESISTOR IN THE QUICKIE

[coca]

I have had my quickie kit for quite some time now, and I have started to work on it. I have read through the build instructions AND IT refers to the instalation of a 220 ohm carbon comp. resistor. I haven't checked as to where that resistor goes, and I do know that it is standard size and type that Bottlehead uses for a grid stopper. I can not find that resistor anywhere on the schematic.  Was it left out of the schematic inadvertently?

Thanks in advance.

Bernie.

 

[Paul Birkeland]

The resistor is not on the schematic, but it is on the parts list and on page 25.

-PB

 

[proud indian]

The resistor is not on the schematic, but it is on the parts list and on page 25.

-PB

What does that mean? Is there a place for it in the quickie or not??

shreekant

 

[Grainger49]

Bottlehead uses 220 ohm CC resistors as grid stoppers and plate stoppers.  I'm not looking at the manual at the moment but they are always attached to the tube socket pins, as close to the tube pin as possible.  You cut the lead short and make a J out of it.  Crimp it to the tube pin, see page 25 for the pin, and solder.  Then to the terminal. 

This is a precaution against oscillations. 

Check the manual as Paul suggests you should see where they go.

 

[coca]

Thanks guys. As Paul explained, there is no problem. I see where it goes re the manual. I was really enquiring about the schematic.

Bernie.

 

[Paul Birkeland]

If you study the schematic and the build really carefully, there is another glaring difference (not the D-cell orientation mentioned elsewhere) that I didn't notice for quite some time.

In the end, that error actually made the PJCCS a possibility, so I wasn't beaten too brutally for it.

-PB

 

[earwaxxer]

Thanks guys. As Paul explained, there is no problem. I see where it goes re the manual. I was really enquiring about the schematic.

Bernie.

I havent got to the level of being able to read a schematic yet. Thats my next project. I'm still a 'paint by numbers' DIY'er. The Quickie would be a good way to learn the skill though.

 

[2wo]

You probably  know more  than you think. After all you have done with the Quickie, you should know that schematic cold ...John

 

[corndog71]

It's been about 15 years since I started learning how to read a schematic and I'm still paint-by-numbers.  I think of the schematic as a map to how everything is connected.  I've learned a ton over the years and have built various projects but still don't understand all of the math behind everything.  I still don't understand the curve graphs of tubes.  My brother is offering to give me a spare oscilliscope. I look forward to learning how to use it. 

Bottlehead gear is a great way to learn the basics.  I also recommend building/rebuilding a Dynaco amp like the ST35, ST70 or a pair of Mk III's.  They can be a little intimidating at first but the more you play with them the more you'll learn and come to appreciate their simplicity. 

 

[proud indian]

It's been about 15 years since I started learning how to read a schematic and I'm still paint-by-numbers.  I think of the schematic as a map to how everything is connected.  I've learned a ton over the years and have built various projects but still don't understand all of the math behind everything.  I still don't understand the curve graphs of tubes.  My brother is offering to give me a spare oscilliscope. I look forward to learning how to use it. 

Bottlehead gear is a great way to learn the basics.  I also recommend building/rebuilding a Dynaco amp like the ST35, ST70 or a pair of Mk III's.  They can be a little intimidating at first but the more you play with them the more you'll learn and come to appreciate their simplicity. 

Why are you sounding like me??

shreekant

 

[earwaxxer]

Why are you sounding like me??

shreekant

I have heard that somewhere before....?