ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Increasing demand factors in residential
by gfretwell - 03/28/24 12:43 AM
Portable generator question
by Steve Miller - 03/19/24 08:50 PM
Do we need grounding?
by NORCAL - 03/19/24 05:11 PM
240V only in a home and NEC?
by dsk - 03/19/24 06:33 AM
Cordless Tools: The Obvious Question
by renosteinke - 03/14/24 08:05 PM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
0 members (), 255 guests, and 16 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#151718 05/02/03 04:12 PM
Joined: Oct 2000
Posts: 3,682
Likes: 3
Admin Offline OP
Administrator
Member
[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

Delco-Light from the Emergence of Advertising in America Collection, Duke University Rare Book, Manuscript, and Special Collections Library.

[This message has been edited by Webmaster (edited 05-02-2003).]

#151719 05/16/03 11:59 PM
Joined: Jul 2002
Posts: 8,443
Likes: 3
Member
Does anyone know of how many of these units were sold?.
At 30VDC, how many appliances were ever made for this system?
Were they(the appliances) made by DELCO, for the system?.
Even comes with it's own switchboard!!.
I'm impressed. [Linked Image]

#151720 05/17/03 12:50 AM
Joined: Nov 2002
Posts: 794
Likes: 3
W
Member
Collectors of old vacuum tube AM radio sets sometimes come across sets designed to operate off of 32V DC. Problem usually is that these sets had normal looking 120V 2 prong plugs, and subsequent owners (like someone inherits gramdma's radio) plug them into 120V AC thus blowing them up....

Once my brother acquired some 32V or was it 48V light bulbs. They had the usual edison base 120V bulbs have, and I thought they were regular 120V bulbs. Flash---pop! Thing is he stored them with the 120V bulbs, and were unmarked.... How was I supposed to know!

#151721 05/17/03 12:53 AM
Joined: Mar 2002
Posts: 25
C
Member
That was a pretty large expense in that day. $275.00! What's that now, about 5 grand????


It's all about integrity.
#151722 05/17/03 11:07 AM
Joined: Apr 2002
Posts: 2,527
B
Moderator
Maybe TrainWire could verify this, but I think lower-voltage medium-based incandescent lamps are currently sold for rail use. [Maybe ]www.gelighting.com]

[Note that lamps themselves {filament or discharge} aren't UL labeled.]

Off topic—but on the other end of voltage, there are medium-based lamps produced with a 277V rating, like for the odd janitor’s closet fixture in a public building. Replace one of those with a 120V lamp and see what happens. :-/ :-/ :-/ You get a nice “one-shot” strobe light.


Link Copied to Clipboard
Powered by UBB.threads™ PHP Forum Software 7.7.5