Bike lights and RFI suppression

UnlistMe
Inventry
Candle Power Forums

Help Support Candle Power:

P

poguy

Newly Enlightened
Joined
Oct 27, 2007
Messages
79
I have one of the cheap XM-L LED lights on the bike. It works OK but on 'low' there is enough RFI to keep my wireless cyclocomputer from working.

Unfortunately there isn't enough room inside for a few extra capacitors.

Have any of you experienced or fixed something like this? The next option is to cut the cord and add a low-pass filter between the light and the battery.

And I don't have a spectrum analyzer, so it is a matter of trying something to see how it works.
 
My old magicshines used to interfere with my wireless computer. Didn't manage to fix it but I use my phone nowdays. Interested to see if you fix it.
 
does an aluminium housing "shield" (?) the frequencies?

So possibly changing the sides of light and Computer could help?
(hole where the cable gets out of the housing on the other side)

or moving them as far as possible to the sides of the handlebars?


last ditch: put protective layer (spray paint + let dry) over the electronics and then apply a layer of alum. foil?

:thinking:
 
If you have a ferrite ring kicking around try wrapping the cable from the battery pack around it. You might be able to shift the frequency enough to solve the problem if the magnetic field is coming from that area.
 
Tried a ferrite bead, didn't work. RF probably getting out through power cord.

I have some DC coax connectors on order. Next step is making an inline filter with a male connector on one end and a female on the other.
 
poguy said:
I have one of the cheap XM-L LED lights on the bike. It works OK but on 'low' there is enough RFI to keep my wireless cyclocomputer from working.

Unfortunately there isn't enough room inside for a few extra capacitors.

Have any of you experienced or fixed something like this? The next option is to cut the cord and add a low-pass filter between the light and the battery.

And I don't have a spectrum analyzer, so it is a matter of trying something to see how it works.
Click to expand...
How about taking a piece of engine braided ground strap and feeding your power cable through it? http://www.mcmaster.com/#grounding-straps/=zxb6y6
 
Weber Hickory Wood Chunks Outdoor Cooking Fuel, 4 lb – Premium BBQ Smoking & Grilling Chips for Rich, Subtly Sweet Flavor – Ideal for Beef, Lamb, Poultry & Pork – Long Lasting
See price on Amazon
Weber Hickory Wood Chunks Outdoor Cooking Fuel, 4 lb – Premium BBQ Smoking & Grilling Chips for Rich, Subtly Sweet Flavor – Ideal for Beef, Lamb, Poultry & Pork – Long Lasting
Old Potters Smoker Wood Chunks 13-16 lbs for Grilling, Smoking, and Wood Fire Cooking ~ 2 x 3 Inches, (Hickory, 790 Cu in.)
See price on Amazon
Old Potters Smoker Wood Chunks 13-16 lbs for Grilling, Smoking, and Wood Fire Cooking ~ 2 x 3 Inches, (Hickory, 790 Cu in.)
Hickory Pizza Oven Wood 6 Inch, 15 lbs Box – Kiln Dried & Bark-Free Firewood for Pizza Ovens, BBQ Smoking & Grilling – Premium Hickory Wood Logs for Ooni, Gozney, Solo Stove, Bertello
See price on Amazon
Hickory Pizza Oven Wood 6 Inch, 15 lbs Box – Kiln Dried & Bark-Free Firewood for Pizza Ovens, BBQ Smoking & Grilling – Premium Hickory Wood Logs for Ooni, Gozney, Solo Stove, Bertello
Firewood Central Kiln-Dried PA Hickory – 8” Splits (Approx 39.5 lb) – Bold Smoking Wood for Pizza Ovens, BBQ & Fire Pits – Easy Light, Low Smoke, USA Sourced
See price on Amazon
Firewood Central Kiln-Dried PA Hickory – 8” Splits (Approx 39.5 lb) – Bold Smoking Wood for Pizza Ovens, BBQ & Fire Pits – Easy Light, Low Smoke, USA Sourced
Firewood Central Kiln-Dried PA Hickory – 6” Splits (Approx. 42 lb) – Bold Smoking Wood for Pizza Ovens, BBQ & Fire Pits – Easy Light, Low Smoke, USA Sourced
See price on Amazon
Firewood Central Kiln-Dried PA Hickory – 6” Splits (Approx. 42 lb) – Bold Smoking Wood for Pizza Ovens, BBQ & Fire Pits – Easy Light, Low Smoke, USA Sourced
Inkbird ITC-308 Digital Temperature Controller 2-Stage Outlet Thermostat Heating and Cooling Mode Carboy Homebrew Fermenter Greenhouse Terrarium 110V 10A 1100W
See price on Amazon
Inkbird ITC-308 Digital Temperature Controller 2-Stage Outlet Thermostat Heating and Cooling Mode Carboy Homebrew Fermenter Greenhouse Terrarium 110V 10A 1100W
Greenworks 24V 6in BL Pruning Saw w/Auto Oiler, Tool Only
See price on Amazon
Greenworks 24V 6in BL Pruning Saw w/Auto Oiler, Tool Only
Old Potters Kiln Dried Firewood - Cherry, 1100 Cu. in, 16-18 Logs ~ 8" x 2.5" Logs. Solo Stove and Cooking Wood for Grilling, Smoking, and Firepits, Cherry.
See price on Amazon
Old Potters Kiln Dried Firewood - Cherry, 1100 Cu. in, 16-18 Logs ~ 8" x 2.5" Logs. Solo Stove and Cooking Wood for Grilling, Smoking, and Firepits, Cherry.
Heritage Smoke Wood Hickory Pizza Oven Wood with Fire Starter - Kiln Dried Firewood 6" Hardwood Logs for Brick Fire Pizza Ovens & Grills, 6 lb, Low Smoke, High Heat, Competition-Grade Clean Burn
See price on Amazon
Heritage Smoke Wood Hickory Pizza Oven Wood with Fire Starter - Kiln Dried Firewood 6" Hardwood Logs for Brick Fire Pizza Ovens & Grills, 6 lb, Low Smoke, High Heat, Competition-Grade Clean Burn
39" Fire Pits with Wood Storage for Outside, Large Wood Burning Outdoor Fireplace with Chimney, Mesh Spark Screen & Fire Poker, Idea for Backyard, Patio, Party, Camping, Picnic
See price on Amazon
39" Fire Pits with Wood Storage for Outside, Large Wood Burning Outdoor Fireplace with Chimney, Mesh Spark Screen & Fire Poker, Idea for Backyard, Patio, Party, Camping, Picnic
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated and are subject to change.
Found a spot for a tantalum cap and it helped a bit. Tantalum's aren't the best for higher frequencies. Next will be a ceramic chip cap. Perhaps also on output to the LED's.
 
You must log in or register to reply here.

Latest posts

Back
Top