fluorescent light switch

[Jeff Zimmerman]

I just bought one of those magnifiers with a built in light, that is
on an adjustable arm from a second hand store for $0.49. The switch
for the light is broken though.
The light only has a transformer, so the switch has to start the light
as well,
It's a 22W bulb with four connections, 2 white and 2 black

I have a switch off of another fluorescent light that I think i can
use, but I cant figure out how to connect it to the new bulb, there
are 4 terminals on the switch and there is a capacitor across two of
them and these two go directly to two terminals on the bulb (one on
each end).

how do i connect it? Also, the bulb on the other light that i'm
getting the switch from is 15W, is it safe to use the switch with the
new 22W bulb? (i cant find a rating on the switch)

 

[JeffM]

Jeff Zimmerman

magnifiers with a built in light
The switch...is broken
The light only has a transformer

Actually, it's a ballast
http://groups.google.com/groups?hl=...0&hl=en&lr=lang_en&ie=UTF-8&safe=off&filter=0

I have a switch off of another fluorescent light that I think i can use
...how to connect it

See link.

is it safe to use the switch with the new 22W bulb? (rating)

Both work at a low current, so I would say yes.

 

[Jeff Zimmerman]

So would the 2 white wires be considered one side of the bulb and the
2 black the other side?

Also, what makes the light turn off? the switch i have is just a
momentary switch.

On the magifying light, should there be a capacitor somewhere to
"start" the bulb?

 

[JeffM]

On the magifying light,

should there be a capacitor somewhere to "start" the bulb?
Jeff Zimmerman

The diagram I referenced is the simplest (2-switch) configuration.
The (momentary=open) ON switch is closed during operation
and the (momentary=closed) START switch gets things going.

If you can see a "starter" canister, read this:
http://groups.google.com/groups?hl=...-1&safe=off&q=jeffm_+noble&btnG=Google+Search
The starter replaces the START switch.

what makes the light turn off?
the switch i have is just a momentary switch.

If you don't have a starter and have only 1 switch,
I assume that it rocks one direction for START and the other for OFF.
That would mean that both of the switches in my diagram
are integrated into that one unit. Am I correct so far?
If so, you must identify which contacts are closed
when the rocker is in the center position
and which contacts close when pushed to START.

To swap parts, both the unit to be repaired and the scavenged unit
must be the same type (starter-type or switch-only type).