This is not used. It is brand new, but not in original packaging Sunshine Electronic Component Sales ( SECS ) Just cut, peel, and apply! A MUST HAVE item for audio engineers to alleviate hum! I have other sizes and quantities in stock!!! (Click below) This is very similar to a resonant tank in that it can help "Trap" the 50-60 cycle unwanted signals given off by the transformer in audio pre-stages. Wrap the material around the source ( Usually the low voltage power supply transformer ) and wrap some around the device which may be picking up stray emissions of the 50-60 cycle frequency ( May be a vacuum tube or other pickup device ). Power Supply Audio Amplifier Transformer Hum Attenuator Ultraperm 80 features a peel and stick surface on one side of the sheet. The Ultraperm 80 sheet is a nickel-iron alloy( See specs below). It is very effective at screening static or low-frequency electromagnetic fields which are difficult to attenuate with other means. Ultraperm 80 is similiar to Mu-metal but the copper which is added to make Mu metal more ductile is not added to this sheet. Ultraperm 80 does NOT nullify the effects of a permanent magnet. This shielding is commonly found around transformers in high end audio equipment, cathode ray tubes in oscilloscopes, photomultipliers, magnetic phono cartridges, hard drives, super conducting circuits, MRI equipment, etc. This is a difficult item to find for the average hobbyist. PERFECT FOR GETTING THE HUM AND NOISE OUT OF YOUR GUITAR PICKUPS, MIC TRANSFORMERS AND SOUND CARDS Ultraperm is used to help shield from stray electromagnetic fields like 50-60 cycle Hum, EMI in.. Guitar pickups, Guitar amplifiers & preamplifiers
Shield Video, Audio, TV, FM, Shortwave, Satellite tuners for lower noise. Cleaner, Clearer Sound & Picture!
MRI Equipment, Magnetometers, Photo-multipliers
Cathode-Ray Tubes used in analog Oscilloscopes
Superconducting Circuit, Heating elements, controllers.
Power, Microphone, Matching, Interstage Transformers
Magnetic Phono Cartridges, Turntable motors.
Microphone and phonograph preamplifiers
Specs: Size is approximate Size: 7.75” x 6.2” (About 48 sq inches) x .005" 19.7cm x 15.7cm x .127mm Material: 80.3% nickel, 14.3% iron, plus 4.6 % molybdenum Permeability Rating: 400,000 @ 0.73-0.5mm -50Hz maximal permeability Click here to see more of my items for sale Care should be taken when handling. Metal is thin and can be sharp! I ship to address you registered with at Ebay (Should be the same as Paypal)
International Buyers -Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. International Buyers - Even though it normally takes less than 2 weeks for item to get to you, please allow for at least 3-4 weeks, as sometimes customs, holidays, etc. can cause items to be delayed that long or even longer in some cases. Please don't fault me for this. It is out of my control. If you monitor tracking, you will see I usually ship the items within just 1 business day. |