ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Page 1 of 2 1 2 >
Topic Options
Rate This Topic
#70932 - 10/16/06 07:10 PM Flicker when you flush...
VAElec Offline
Member
Registered: 07/26/05
Posts: 49
Loc: Sterling, Virginia, US
This is for fun. How would you make a control system that causes the bathroom lights to flicker when when someone flushes the toilet?

I am thinking flow switch on the cold water supply to the tank piloting NO contacts on a relay. This relay feeds line voltage to a transformer (isolation type but tapped low) that causes an under voltage to the ballast at the fixture. (This of course assumes a fluorescent fixture). The under-driven ballast should now go in and out due to low voltage (think line flicker) if I am not mistaken. Even better if you have a magnetic and not electronic ballast. Flow switch opens again and lighting is normal.

Also, this is assuming that you love to change ballasts at your Moms house for a good laugh. Ideas? How to do it with incandescent fixtures?
_________________________
Pete
Top
Work Gear for Electricians and the Trades
#70933 - 10/16/06 07:41 PM Re: Flicker when you flush...
Tiger Offline
Member
Registered: 05/04/05
Posts: 706
Loc: Crystal Lake, IL USA
Is it possible to have the lights dim in a varying manner according to the sound levels in the room?

Dave
Top
#70934 - 10/16/06 08:02 PM Re: Flicker when you flush...
JoeTestingEngr Offline
Member
Registered: 11/04/05
Posts: 781
Loc: Chicago, Il.
I would probably use a commercially available wireless 3-way switch. I would tap into the switch of the battery powered stick-on with a sound trigger ckt. This would be hidden behind the tank.
Joe
Top
#70935 - 10/16/06 09:55 PM Re: Flicker when you flush...
Rewired Offline
Member
Registered: 01/01/06
Posts: 558
Loc: Hamilton, Ontario, Canada
Perhaps a set of wireless burglar alarm "contacts" in the tank, fastened in such a manner that hitting the flush will " trigger the wireless contact" and in return will send a signal to its receiver elsewhere, and from there control your light flicker circuit. Heck for laughs it can even momentarily sound a big 'ol bell! Wouldn't that be " alarming"
Figure that may be easier than plumbing in a flow switch, and best off, it will come out as easy as it went in when the joke is over.

A.D
Top
#70936 - 10/16/06 10:33 PM Re: Flicker when you flush...
electech Offline
Member
Registered: 02/18/02
Posts: 113
Loc: Northern Il
maybe a low-voltage sound or liquid level detector circuit that could turn on or drive an amp that feeds into some white LEDs to supplement the existing lighting rather than interface with the AC.

I'm thinking a op amp as a level detector to go to full output, that would in turn activate a 555 timer circuit configured as an oscillator to drive the LEDs. I haven't done elctronics for fun in a long time - just safety these days. There's a lot of time between now and April 1st...
Top
#70937 - 10/17/06 03:31 AM Re: Flicker when you flush...
Alan Belson Offline
Member
Registered: 03/23/05
Posts: 1803
Loc: Mayenne N. France
My son had a 'joke thing' fitted inside the toilet roll holder. When you pulled a sheet of paper, it emitted a loud & disgusting noise, at about 3.4 on the Richter Scale.
Ideal for embarassing unwanted visitors.
His wife put it in the trash.
_________________________
Wood work but can't!
Top
#70938 - 10/17/06 02:52 PM Re: Flicker when you flush...
JoeTestingEngr Offline
Member
Registered: 11/04/05
Posts: 781
Loc: Chicago, Il.
The reason I mentioned the wireless 3-way is because the switch in the wall switching AC, will be a UL listed switch. I love circuit design as much or more as the next guy but hate L words like lawyer and liability.
Joe
Top
#70939 - 10/17/06 03:46 PM Re: Flicker when you flush...
watthead Offline
Member
Registered: 10/13/01
Posts: 172
Loc: South Carolina
You could use a hvac drain pan float switch mounted in the tank to initiate the flicker machine that you are engineering.
Top
#70940 - 10/17/06 04:56 PM Re: Flicker when you flush...
gfretwell Offline


Member
Registered: 07/20/04
Posts: 9038
Loc: Estero,Fl,usa
put a variable resistance transducer on the water line.
_________________________
Greg Fretwell
Top
#70941 - 10/17/06 05:27 PM Re: Flicker when you flush...
watthead Offline
Member
Registered: 10/13/01
Posts: 172
Loc: South Carolina
got a lot of iron in the water supply?
Top
Page 1 of 2 1 2 >

Member Spotlight
Member Since: 04/03/02
Posts: 6776
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 44 Guests and 9 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 51
HotLine1 43
gfretwell 17
Trumpy 16
Ruben Rocha 13
 
Newest Members
clee512, Jdscott2005, FAIZAN, Regitest2, sureshazhagai

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals