Another Inside the HDR Thread: Dissecting my HDR

FarOutThere said:
Cool, a schematic. :love:

This looks good and is almost identical to mine.

BTW you should add numbers #1 #2 #3 to the switches.
The difference aka confusion seems to be around the witness well.

I assume that BOTTOM INSIDE >> TOP INSIDE
and BOTTOM OUTSIDE >> TOP OUTSIDE


Your diagram shows

BOTTOM INSIDE >> TOP INSIDE >> SWITCH (3 I assume)

and I have

BOTTOM INSIDE >> TOP INSIDE >> pot-resistor-pot



Similarly you show

LAMP >> BOTTOM OUTSIDE >> TOP OUTSIDE >> pot-resistor-pot

and I have

LAMP >> BOTTOM OUTSIDE >> TOP OUTSIDE >> SWITCH (3 I assume)



So they are very similar but just reversed, as far as the top of the WW wires go.

Unless one of our diagrams is wrong. (y)


.
We should both double check this.
Click to expand...
Thanks for the feedback.
I think the witness well confusion comes from needing a better way to describe "top vs bottom",
and needs to be more like "open end" and "closed end".
Also the good possibility that I got it backwards,
or Steve did! ;)
 
FarOutThere said:
Cool, a schematic. :love:

This looks good and is almost identical to mine.

BTW you should add numbers #1 #2 #3 to the switches.
The difference aka confusion seems to be around the witness well.

I assume that BOTTOM INSIDE >> TOP INSIDE
and BOTTOM OUTSIDE >> TOP OUTSIDE


Your diagram shows

BOTTOM INSIDE >> TOP INSIDE >> SWITCH (3 I assume)

and I have

BOTTOM INSIDE >> TOP INSIDE >> pot-resistor-pot



Similarly you show

LAMP >> BOTTOM OUTSIDE >> TOP OUTSIDE >> pot-resistor-pot

and I have

LAMP >> BOTTOM OUTSIDE >> TOP OUTSIDE >> SWITCH (3 I assume)



So they are very similar but just reversed, as far as the top of the WW wires go.

Unless one of our diagrams is wrong. (y)



We should both double check this.
Click to expand...
Also, which switch is #1? top or bottom. ;)
 
Doc 05 said:
Hey, I'm working on a "parts list" to go with this schematic.
Anybody know where to get the plastic boxes and what are they called?
ABS, bakelite, size, etc.
Thanks
Click to expand...

The HDR box Steven used is a phenolic instrument case made by Keystone Electronics. I believe the case part number is 701 and the top cover part number is 2038. Please verify measurements first just to make sure I am correct. The case and cover are currently available at Mouser Electronics.
 
Doc 05 said:
Hey, I'm working on a "parts list" to go with this schematic.
Anybody know where to get the plastic boxes and what are they called?
ABS, bakelite, size, etc.
Thanks
Click to expand...

BOX

701 Keystone Electronics | Boxes, Enclosures, Racks | DigiKey

Order today, ships today. 701 – Box Plastic, Phenolic Black Open End(s) 6.812" L x 5.250" W (173.02mm x 133.35mm) X 2.312" (58.72mm) from Keystone Electronics. Pricing and Availability on millions of electronic components from Digi-Key Electronics.
www.digikey.com www.digikey.com

LID

2038 Keystone Electronics | Boxes, Enclosures, Racks | DigiKey

Order today, ships today. 2038 – Plastic, Phenolic Cover, Lid 6.812" L x 5.250" W x 0.093" H (173.05mm x 133.35mm x 1.60mm) Black from Keystone Electronics. Pricing and Availability on millions of electronic components from Digi-Key Electronics.
www.digikey.com www.digikey.com

And to save you a headache later, buy a few of these. :cool:

9307 Keystone Electronics | Hardware, Fasteners, Accessories | DigiKey

Order today, ships today. 9307 – #6-32 Pan Head Machine Screw Slotted Drive Steel from Keystone Electronics. Pricing and Availability on millions of electronic components from Digi-Key Electronics.
www.digikey.com www.digikey.com
 

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