IET logo
 
IET
Decrease font size
Increase font size
Topic Title: Strange Bulb
Topic Summary: help identifying a bulb pls
Created On: 04 December 2012 12:52 PM
Status: Post and Reply
Linear : Threading : Single : Branch
Search Topic Search Topic
Topic Tools Topic Tools
View similar topics View similar topics
View topic in raw text format. Print this topic.
 04 December 2012 12:52 PM
User is offline View Users Profile Print this message



Tris

Posts: 16
Joined: 20 January 2004

Could anyone help me to identify or even find a replacement lamp for a string of 40 xmas lights please?
here is a pic of one of the bulbs.

Thanks

-------------------------
Tristan Thorne MEng MIEE
 04 December 2012 01:18 PM
User is offline View Users Profile Print this message


Avatar for spinlondon.
spinlondon

Posts: 4437
Joined: 10 December 2004

It appears to be 7V and 5W, although the picture is not clear, and it may be something else such as 3.7V
Could be an American E12, or a European E14, as far as I'm aware, there is no such size as E13.
Do you have a Vernier Guage, that you can use to measure the cap, up near the bulb?
The numbers after the E refer to the diameter of the cap measured in millimeters.
 04 December 2012 01:42 PM
User is offline View Users Profile Print this message


Avatar for OMS.
OMS

Posts: 19452
Joined: 23 March 2004

Probably a 6V 5W SES lamp (14mm nominal) used in series on a 230/240V supply for the Xmas lights -

Regards

OMS

-------------------------
Failure is always an option
 04 December 2012 03:13 PM
User is offline View Users Profile Print this message


Avatar for spinlondon.
spinlondon

Posts: 4437
Joined: 10 December 2004

Looks like a 7 to me.
 04 December 2012 03:22 PM
User is offline View Users Profile Print this message


Avatar for OMS.
OMS

Posts: 19452
Joined: 23 March 2004

It probably is Spin - they were sold as 6 or 7 volt units

Almost certainly as 7V on the picture anyway

Regards

OMS

-------------------------
Failure is always an option
 04 December 2012 04:23 PM
User is offline View Users Profile Print this message


Avatar for rocknroll.
rocknroll

Posts: 8824
Joined: 03 October 2005

I think you will find those bulbs are retro C7's they operated on a parallel circuit not series so if one went out the others stayed lit.

regards

-------------------------
"Take nothing but a picture,
leave nothing but footprints!"
-------------------------
"Oh! The drama of it all."
-------------------------
"You can throw all the philosophy you like at the problem, but at the end of the day it's just basic electrical theory!"
-------------------------
 04 December 2012 04:35 PM
User is online View Users Profile Print this message



daveparry1

Posts: 6095
Joined: 04 July 2007

Almost certainly as 7V on the picture anyway
---------------
Maybe 6.7 volts then!
Statistics

See Also:



FuseTalk Standard Edition v3.2 - © 1999-2014 FuseTalk Inc. All rights reserved.