CE: Rockstone Power 3000 Watt Heavy Duty Step Up/Down Voltage Transformer Converter - Step Up/Down 110/120/220/240 Volt - 5V USB Port - CE Certified [3-Year Warranty] - Rockstone Power

Lawn & Patio: Power Bright VC500W Voltage Transformer 500 Watt Step Up/Down converter 110/120 Volt - 220/240 Volt - Power Bright

Single Detail Page Misc: Goldsource? Step Up and Down Voltage Converter Transformer ST500 - Transformer - AC 110/220 V - 500 Watt - Goldsource

CE: Goldsource STU-1000 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 1000 Watt - Goldsource

CE: Seven Star SF500 500W 110v/220v 220v/110v Step Up/Down Automatic Transformer Adapter - PVCS Inc.

Home Improvement: VCT VT-1000J - Japanese Step Up/Down Voltage Transformer Converts Japan 100 Volts To 120Volts OR Vice Versa -1000 Watt - VCT Electronics

CE: Rockstone RSP-2000 Power 2000 Watt Heavy Duty Step Up/Down Voltage Transformer Converter 110/120/220/240V - USB - CE - E Depot Express

Lawn & Patio: Power Bright VC1500W Voltage Transformer 1500 Watt Step Up/Down converter 110/120 Volt - 220/240 Volt - Power Bright

Photography: XCSOURCE? 20pcs 26 30 37 43 52 55 62 67 72 77 82mm Step Up/Down Ring Filter UV Set DC162 - XCSource

CE: ELC T-5000 5000-Watt Voltage Converter Transformer - Step Up/Down - 110V/220V - Circuit Breaker Protection - Enovize Inc

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Step Up Down Popular Q&A

Q: Step up & Down Rings?
A: No, the two rings will not be the same. A 55mm-58mm step up ring is what you need. It will have male 55mm threads on one end to screw into your filter adapter, ... Read More »

Q: A step up, down, or sideways?
A: This is very much a step up. I had a Macbook (white plastic) with a 2.4ghz Core2 Duo chip; my new Macbook pro with a "mere" 1.7ghz dual-core processor is enormo... Read More »

Q: How to Build a Simple Step Up/Down Transformer.
A: 1. Strip the ends of two long (around two feet each) insulated wires. Scissors or a knife will suffice for this job. 2. Check the metal of the steel bolt or scr... Read More »

Q: What is step up and step down?
A: Usually refers to a transformer. A step up transformer increases the voltage and a step down decreases the voltage by an amount proportional to the ratio of the... Read More »

Q: What is a 'step up step down transformer'?
A: Just about any transformer is a step up/step down. This means the turns ratio is not equal to one, and it will function as a step down transformer if the input ... Read More »