Here are Todays Amazing Step Down Deals!
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 67mm to 58mm Step Down Ring Filter Adapter 67 58 mm New $1.93 Time Remaining: 12d 10h 8m Buy It Now for only: $1.93 Buy It Now | Add to watch list |
 46mm 52mm 46 52 mm 46 to 52 Step Up Filter Ring Adapter $3.32 Time Remaining: 3h 58m Bid now | Add to watch list |
 77 72 67 62 58 55 52 49mm Step Down Rings Lens Adapter Filter Set DC69 $9.59 Time Remaining: 29d 12h 28m Buy It Now for only: $9.59 Buy It Now | Add to watch list |
 STEP UP LENS ADAPTER RING 58MM TO 67MM FOR DSLR CAMERA $3.51 Time Remaining: 5h 24m Bid now | Add to watch list |
 Tamron SP AF 28 75mm f 28 XR Di LD Lens For Nikon BIM Refurbished $325.00 Time Remaining: 4d 22h 33m Buy It Now for only: $325.00 Buy It Now | Add to watch list |
 58mm to 52mm 58mm 52mm step down filter ring adapter $1.75 Time Remaining: 24d 12h 14m Buy It Now for only: $1.75 Buy It Now | Add to watch list |
 Step up rings 37mm to 49mm 49mm to 52 mm 52mm to 55mm 55mm to 58mm 58mm to 62mm $9.49 Time Remaining: 5h 24m Bid now | Add to watch list |
 New 58mm to 52mm 58 to 52 Step Down Adapter Filter Ring $1.83 Time Remaining: 15d 5h 28m Buy It Now for only: $1.83 Buy It Now | Add to watch list |
 STEP DOWN LENS ADAPTER RING 67MM TO 52MM FOR DSLR CAMERA $3.51 Time Remaining: 5h 24m Bid now | Add to watch list |
 Black 58mm to 52mm 58 52mm Step Down Filter Ring 58 52 $1.83 Time Remaining: 15d 5h 29m Buy It Now for only: $1.83 Buy It Now | Add to watch list |
 Telephoto Wide Angle Lens Canon PowerShot SX30 IS SX40 HS Digital Camera Kit $59.95 Time Remaining: 8d 22h 12m Buy It Now for only: $59.95 Buy It Now | Add to watch list |
 Set 5 rings 46mm to 49mm 49mm to 52mm 52mm to 55mm 55 mm to 58mm 58 mm to 72mm $9.49 Time Remaining: 6h 14m Bid now | Add to watch list |
 34mm 49mm 34 49 mm 34 to 49 Step Up Ring Filter Adapter $6.90 Time Remaining: 20d 8h 36m Buy It Now for only: $6.90 Buy It Now | Add to watch list |
 42mm 39mm M42 M39 Lens mount Step Down Ring Adapter $3.78 Time Remaining: 1d 19h 12m Buy It Now for only: $3.78 Buy It Now | Add to watch list |
 405MM 52MM 405 52 MM 405 TO 52 STEP UP RING ADAPTER $2.75 Time Remaining: 6h 14m Bid now | Add to watch list |
 49mm to 28mm Step down Filter Ring Adapter 49 28 $1.99 Time Remaining: 27d 14h 48m Buy It Now for only: $1.99 Buy It Now | Add to watch list |
 ADAPTER FILTER LENS STEP DOWN RING 49 46 49MM TO 46MM $2.86 Time Remaining: 6h 14m Bid now | Add to watch list |
 For Cokin Filter Set P Series 3pcs ND2 ND4 ND8 + 9pcs Adapter Ring + Holder LF4 $27.99 Time Remaining: 1d 6h 27m Buy It Now for only: $27.99 Buy It Now | Add to watch list |
 72MM 58MM 72 58MM 72 TO 58 STEP DOWN RING ADAPTER $6.95 Time Remaining: 26d 4h 43m Buy It Now for only: $6.95 Buy It Now | Add to watch list |
 67MM 52MM 67MM 52MM 67 TO 52 STEP DOWN RING FILTER ADAPTER $3.51 Time Remaining: 6h 23m Bid now | Add to watch list |
 37mm to 46mm 37 46 mm Male to Female Stepping Step Up Lens Filter Ring Adapter $1.98 Time Remaining: 29d 18h 26m Buy It Now for only: $1.98 Buy It Now | Add to watch list |
 Filter Step up rings set 49 52 55 58 62 67 72 77 82mm 8pcs 49mm 82mm lens hood $9.69 Time Remaining: 17d 11h 31m Buy It Now for only: $9.69 Buy It Now | Add to watch list |
 ADAPTER FILTER LENS STEP UP RING 28 37 28MM TO 37MM $2.86 Time Remaining: 6h 23m Bid now | Add to watch list |
 42mm 39mm M42 M39 Lens mount Step Down Ring Adapter $1.98 Time Remaining: 29d 20h 25m Buy It Now for only: $1.98 Buy It Now | Add to watch list |
 4 Rings lens adapter 46mm to 49mm 49mm to 52mm 52 mm to 67 mm 67 mm to 72mm $8.54 Time Remaining: 6h 23m Bid now | Add to watch list |
 67mm to 52mm 67mm 52mm step down filter ring adapter $1.91 Time Remaining: 24d 13h 46m Buy It Now for only: $1.91 Buy It Now | Add to watch list |
 34 37 MM 34 MM 37 MM 34 to 37 Step Up Ring Filter Adapter $1.96 Time Remaining: 10d 18h 14m Buy It Now for only: $1.96 Buy It Now | Add to watch list |
 ADAPTER FILTER LENS STEP UP RING 46 49 46MM TO 49MM $2.86 Time Remaining: 6h 23m Bid now | Add to watch list |
 Camera Lens Filter SPANNER Wrench Set 77mm 82mm 86mm $9.99 Time Remaining: 27d 16h 30m Buy It Now for only: $9.99 Buy It Now | Add to watch list |
 67MM 62MM 67MM 62MM 67 TO 62 STEP DOWN RING FILTER ADAPTER $3.21 Time Remaining: 6h 24m Bid now | Add to watch list |
 355mm to 49mm 355 49 mm Step Up Filter Ring Adapter $7.99 Time Remaining: 8d 9h 52m Buy It Now for only: $7.99 Buy It Now | Add to watch list |
 58mm to 55mm 58mm 55mm step down filter ring adapter $1.75 Time Remaining: 24d 12h 16m Buy It Now for only: $1.75 Buy It Now | Add to watch list |
 ADAPTER FILTER LENS STEP DOWN RING 58 49 58MM TO 49MM $2.86 Time Remaining: 6h 24m Bid now | Add to watch list |
 46mm 28mm 46 28 mm 46 to 28 Step down Filter Ring Adapter $7.99 Time Remaining: 5d 14h Buy It Now for only: $7.99 Buy It Now | Add to watch list |
 37mm to 58mm 37 58 mm Male to Female Photo Step Up Lenses Filters Ring Adapter $2.48 Time Remaining: 29d 18h 46m Buy It Now for only: $2.48 Buy It Now | Add to watch list |
 77 72 67 62 58 55 52 49mm Step Down Rings Lens Adapter Filter Set GAR JT6 $0.99 Time Remaining: 18h 33m Bid now | Add to watch list |
 7pcs 49 52 55 58 62 67 72 77 mm Step Up Filter Ring Stepping Adapter Set DC38 $9.29 Time Remaining: 3d 20h 12m Buy It Now for only: $9.29 Buy It Now | Add to watch list |
 MARUMI PRINZ STEPPING RINGS Lot of 6 Lens Filter Adapters Camera Accessories $9.99 Time Remaining: 3h 33m Bid now | Add to watch list |
 37mm to 52mm 37 52 mm Male to Female Photo Step Up Lenses Filters Ring Adapter $1.98 Time Remaining: 29d 18h 37m Buy It Now for only: $1.98 Buy It Now | Add to watch list |
 58 52 MM 58 MM 52 MM 58 to 52 Step Down Ring Filter Adapter $1.86 Time Remaining: 12d 17h 55m Buy It Now for only: $1.86 Buy It Now | Add to watch list |
 49MM 52MM 49MM 55MM 49MM 58MM STEP UP RING FILTER ADAPTER $6.17 Time Remaining: 6h 14m Bid now | Add to watch list |
 82 77 72 67 62 58 55 52 49 mm Step Down Rings SET 8pcs $12.99 Time Remaining: 13d 12h 37m Buy It Now for only: $12.99 Buy It Now | Add to watch list |
 46mm to 58mm 46 58mm Male Female Photo Step Up Lens Filter ND Cover Ring Adapter $1.98 Time Remaining: 6h 34m Buy It Now for only: $1.98 Buy It Now | Add to watch list |
 STEP UP LENS ADAPTER RING 58 TO 62 MM 58 TO 67 MM 58 TO 77 MM FOR DSLR CAMERA $7.59 Time Remaining: 6h 23m Bid now | Add to watch list |
 58mm to 37mm Step Down Ring Filter Adapter 58 37 mm $5.99 Time Remaining: 19d 21h 23m Buy It Now for only: $5.99 Buy It Now | Add to watch list |
 PRO Macro Extension Tube FOR Canon EOS Rebel 40D 50D 7D 5D $73.81 Time Remaining: 1h 11m Bid now | Add to watch list |
 58MM 55MM 58 55MM STEP DOWN ADAPTER FILTER RING ADAPTER $4.15 Time Remaining: 26d 4h 42m Buy It Now for only: $4.15 Buy It Now | Add to watch list |
 ANAMORPHIC LENS CLAMP KIT KOWA SANKOR SINGER ISCO $55.00 Time Remaining: 19d 15h 43m Buy It Now for only: $55.00 Buy It Now | Add to watch list |
 042x New Wide Fisheye+ Macro 52mm For Panasonic Lumix DMC GF1 GF3 GH2 G1 $39.81 (2 Bids) Time Remaining: 1h 31m Bid now | Add to watch list |
 Metal Step up ring 33mm to 37mm 33 37 Sonia New Adapter $3.99 Time Remaining: 11d 20h 6m Buy It Now for only: $3.99 Buy It Now | Add to watch list |
 Panasonic Lumix G 100 300mm f40 56 Lens NEW $499.00 Time Remaining: 29d 1h 36m Buy It Now for only: $499.00 Buy It Now | Add to watch list |
 SET OF 7 STEP UP DOWN RINGS FOR OLYMPUS C 5050 CAMERA ADAPTER TUBE $13.79 Time Remaining: 1d 3h 13m Bid now | Add to watch list |
 52mm 39mm 52 39mm 52 to 39 Step Down Ring Filter Adapter NEW H280 $2.48 Time Remaining: 27d 14h 27m Buy It Now for only: $2.48 Buy It Now | Add to watch list |
 52MM TO 72MM STEP UP LENS FILTER RING ADAPTER +CLOTH $3.44 Time Remaining: 1d 3h 13m Bid now | Add to watch list |
 58 52mm 58mm Male Thread to 52mm Female thread Step Down Adapter Metal Ring $1.83 Time Remaining: 19d 9h 35m Buy It Now for only: $1.83 Buy It Now | Add to watch list |
 Sale 58mm 57mm Metal Camera Lens Filter Step Down Ring $2.66 Time Remaining: 29d 11h 2m Buy It Now for only: $2.66 Buy It Now | Add to watch list |
 58MM TO 72MM STEP UP LENS FILTER RING ADAPTER BLACK $3.27 Time Remaining: 1d 3h 13m Bid now | Add to watch list |
 77 52 MM 77 MM 52 MM 77 to 52 Step Down Ring Filter Adapter $3.42 Time Remaining: 12d 17h 38m Buy It Now for only: $3.42 Buy It Now | Add to watch list |
 46mm to 58mm 46 58 mm Step Up Lens Filter Ring Adapter $3.44 Time Remaining: 1d 3h 13m Bid now | Add to watch list |
 49mm 52mm 55mm 58mm 62mm 67mm 72mm 77mm step up ring adapter kit set 7 pcs $9.88 Time Remaining: 23d 12h 18m Buy It Now for only: $9.88 Buy It Now | Add to watch list |
 55mm to 58mm 55 58mm Male Female Photo Step Up Lens Filter ND Cover Ring Adapter $1.98 Time Remaining: 19h 12m Buy It Now for only: $1.98 Buy It Now | Add to watch list |
 WIDE ANGLE FISHEYE HIGH DEFINITION MACRO LENS FOR SONY ALPHA SLR A100 A200 A300 $36.09 (1 Bid) Time Remaining: 3h 8m Bid now | Add to watch list |
 Rocketfish 67mm UV Lens Filter RF UVF67 $3.14 Time Remaining: 9d 23h 48m Buy It Now for only: $3.14 Buy It Now | Add to watch list |
 Metal 52mm 49mm Step Down Lens Filter Ring 52 49 mm 52 to 49 Stepping Adapter $1.45 Time Remaining: 24d 12h 18m Buy It Now for only: $1.45 Buy It Now | Add to watch list |
 SUPER WIDE ANGLE FISHEYE MACRO 043X LENS FOR CANON 52MM 55MM 58MM 62MM 72MM $36.09 Time Remaining: 3h 8m Bid now | Add to watch list |
 New 40 405mm Step Up Ring 40mm 405mm 40 405 Canon RF $6.95 Time Remaining: 20d 1h 49m Buy It Now for only: $6.95 Buy It Now | Add to watch list |
 15 30x 1200mm 2500mm Telescope for Canon T3 T3i T2i T1i XS 40D 50D 60D 5D 7D 1Ds $131.98 Time Remaining: 3h 57m Bid now | Add to watch list |
 Metal Step up ring 67m to 77mm 67 77 Sonia New Adapter $4.99 Time Remaining: 2d 2h Buy It Now for only: $4.99 Buy It Now | Add to watch list |
 045X Wide Angle Converter Lens for 34mm filter 34 mm $27.99 Time Remaining: 9d 1h 55m Buy It Now for only: $27.99 Buy It Now | Add to watch list |
 72MM 043X SUPER WIDE ANGLE FISHEYE HD + MACRO LENS FOR CANON XL1S XL1 $36.09 Time Remaining: 3h 58m Bid now | Add to watch list |
 49mm 52mm 55mm 58mm 62mm 67mm 72mm 77mm 82mm step up ring adapter kit set 8 pcs $13.99 Time Remaining: 23d 12h 22m Buy It Now for only: $13.99 Buy It Now | Add to watch list |
 58mm 52mm 58 52 Step Down Filter Ring Stepping Adapter $3.15 Time Remaining: 14d 9h 45m Buy It Now for only: $3.15 Buy It Now | Add to watch list |
 040X WIDE MACRO FISHEYE RING 49MM 52MM 58MM MICROFIBER F PENTAX K R K M K X $31.34 Time Remaining: 3h 58m Bid now | Add to watch list |
 Adorama Step Down Adapter Ring 52mm Lens to 48mm Filter Size SDR5248 $6.95 Time Remaining: 7d 21h 7m Buy It Now for only: $6.95 Buy It Now | Add to watch list |
 WIDE ANGLE FISHEYE + PROFESSIONAL MACRO LENS 043X FOR NIKON D40 D50 D70 D80 D90 $36.09 Time Remaining: 4h 13m Bid now | Add to watch list |
 55mm to 52mm 55 52 mm Male to Female Photo Step Down Lens Filter ND Ring Adapter $1.99 Time Remaining: 19h 6m Buy It Now for only: $1.99 Buy It Now | Add to watch list |
 49mm to 82mm 9x Metal Ring Adapter set + P Filter Holder for Cokin P series DC21 $15.98 Time Remaining: 3d 12h Buy It Now for only: $15.98 Buy It Now | Add to watch list |
 58MM 043x Wide angle fisheye macro lens for Nikon D3000 D3100 D5000 D5100 $36.09 Time Remaining: 4h 13m Buy It Now for only: $39.89 Buy It Now | Bid now | Add to watch list |
 58MM 52MM 58MM 52MM 58 TO 52 STEP DOWN RING FILTER ADAPTER $2.49 Time Remaining: 28d 22h 54m Buy It Now for only: $2.49 Buy It Now | Add to watch list |
 72MM 043X WIDE ANGLE FISHEYE MACRO LENS FOR CANON XH A1 XH G1 XL2E $36.09 Time Remaining: 4h 28m Bid now | Add to watch list |
 New 95 77mm Metal Step Down Ring 95mm 77mm 95 77 $7.95 Time Remaining: 24d 20h 5m Buy It Now for only: $7.95 Buy It Now | Add to watch list |
 82mm to 77mm 82mm 77mm 82 77mm Step Down Ring Filter Adapter Black $13.49 Time Remaining: 13d 8h 54m Buy It Now for only: $13.49 Buy It Now | Add to watch list |
 55MM 77MM 55MM 77MM 55 TO 77 STEP UP RING FILTER ADAPTER $3.51 Time Remaining: 1d 5h 24m Bid now | Add to watch list |
 42mm 46mm Step Up ring adapter filter size 42 to 46 $21.19 Time Remaining: 14d 23h 47m Buy It Now for only: $21.19 Buy It Now | Add to watch list |
 42mm 39mm M42 M39 Lens mount Step Down Ring Adapter $2.29 Time Remaining: 12d 13h 8m Buy It Now for only: $2.29 Buy It Now | Add to watch list |
 37MM TO 52MM 37 52 MM STEP UP LENS FILTER RING ADAPTER $2.84 Time Remaining: 1d 5h 24m Bid now | Add to watch list |
 46mm 42mm 46 42 mm 46 to 42 Step down Filter Ring Adapter $7.99 Time Remaining: 16h 42m Buy It Now for only: $7.99 Buy It Now | Add to watch list |
 72MM TO 77MM STEP UP LENS FILTER RING ADAPTER + MICROFIBER $3.79 Time Remaining: 1d 5h 54m Bid now | Add to watch list |
 37mm 28mm 37 28 mm 37 to 28 Step down Ring Filter Adapter $4.90 Time Remaining: 17d 18h 10m Buy It Now for only: $4.90 Buy It Now | Add to watch list |
 FISHEYE WIDE MACRO LENS + UV CPL FILTER + HOOD + CAP + BATTERIES F CANON SX10 $54.99 Time Remaining: 13d 8h 28m Buy It Now for only: $54.99 Buy It Now | Add to watch list |
 Set 4 pcs step up rings 58mm to 62mm 62mm to 67mm 67mm to72mm 72mm to 77mm $9.02 Time Remaining: 1d 5h 54m Bid now | Add to watch list |
 52mm 58mm 52 58mm 52 to 58 Step Up Ring Filter Adapter $3.19 Time Remaining: 4d 4h 28m Buy It Now for only: $3.19 Buy It Now | Add to watch list |
 3X X3 TELEPHOTO Tele LENS Converter FOR ANY 25272830305mm37mm CAMCORDER $34.95 Time Remaining: 2d 8h 18m Buy It Now for only: $34.95 Buy It Now | Add to watch list |
 6 Step up rings 49 52mm 52 55mm 55 58mm 58 72mm 72 77mm 77 82mm $11.87 Time Remaining: 1d 5h 54m Bid now | Add to watch list |
 20X TELE 045X WIDE ANGLE LENS + KEEPER +MICROFIBER FOR OLYMPUS E 620 E 520 $27.99 Time Remaining: 5d 22h 53m Buy It Now for only: $27.99 Buy It Now | Add to watch list |
 2X TELE + 045X WIDE LENS +LCD PROTECTOR FOR NIKON D40X $55.76 Time Remaining: 5h 24m Bid now | Add to watch list |
 49mm 43mm 49 43mm 49 to 43 Step Down Ring Filter Adapter NEW H065 $2.38 Time Remaining: 22d 13h 28m Buy It Now for only: $2.38 Buy It Now | Add to watch list |
 37mm to 55mm 37 55 mm Male to Female Photo Step Up Lenses Filters Ring Adapter $2.48 Time Remaining: 29d 18h 41m Buy It Now for only: $2.48 Buy It Now | Add to watch list |
 HD 45X Telephoto Lens + Microfiber for Pentax K 7 K 5 K r K x K m K20D K200D $74.74 Time Remaining: 5h 24m Bid now | Add to watch list |
 52mm to 49mm Step Down Camera Lens Adapter Ring $4.95 Time Remaining: 28d 2h 18m Buy It Now for only: $4.95 Buy It Now | Add to watch list |
More Great Information on Step Down:
Chuck Grassley Calls President Obama 'Stupid' Over Supreme Court Comments (Huffington post)
Sen. Chuck Grassley (R-Iowa) expressed his disapproval of the president's
recent comments about the Supreme Court, apparently referring to Obama as
"stupid."
Obama, who taught constitutional law at the University of Chicago, said Monday
that he was "confident" that the Supreme Court would not strike down the
Affordable Care Act, because to do so "would be an unprecedented,
extraordinary step of overturning a law that was passed by a strong majority
of a democratically elected Congress."
In a tweet sent Saturday morning, Grassley said he wasn't "outraged" by the
president's statement because he believes the American people "r not stupid as
this x prof of con law."
Read More...
More on Elections 2012
How can I easily step-down a DC voltage with out too much power dissipation?
I need to step down +45v DC to +12v DC, with as little amps dissipated as possible. I was thinking about using a simple voltage divider circuit, but this dissipates too much heat (thus too much mA). I also looked into some VRegs from Linear and National, however the +12v does not need to be superbly regulated and using a VReg would waste power, and needs too many external parts.
+42vDC IN to +12vDC OUT, with little Amps lost, it needs to ouput around 2.5 Amps. Hope that helps anyones confusion.
You'd probably want a switching power supply like this "Simple Switcher" from National Semiconductor. (You can get them at DigiKey)
Using resistors for a voltage divider is a very inefficient way to go about the voltage reduction. If you are dropping 33 volts at 2.5 amps, you are losing 82.5 watts to heat. Switching regulators use an inductor instead of a resistor and will probably be better than 75% efficient (losing 20 watts or less).
Tags: clippers, · down · power · step · step down · step down converter · step down method cost allocation · step down transformer · step down unit · voltageNo Comments
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