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 Steren 200-510 30075 Ohms Matching Transformer (200510) US $2.45 
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 RadioShack® Indoor/Outdoor Matching Transformer 15-1230 US $4.99
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 Push-on antenna matching transformer balun 300/75 ohm TV F cable adapter HD US $4.28
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 Indoor antenna matching transformer balun 75/300 ohm TV F cable adapter HD US $4.28
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 Outdoor antenna matching transformer balun 75/300 ohm TV F cable adapter 94444 US $5.99
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 Quick Connect Matching Transformer - 300 ohm Flat to 75 ohm F US $2.50
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 UHF VHF TV FM Coaxial Matching Transformer 75/300Ω US $5.00
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 Outdoor antenna matching transformer balun 75/300 ohm TV F cable adapter US $5.95
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 Indoor/outdoor Matching Transformer US $.99
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 NEW! RADIO SHACK 15-1253C TV/VCR MATCHING TRANSFORMER CONNECTS 75 TO 300 OHMS!! US $5.00
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 UHF VHF FM TV COAX MATCHING TRANSFORMER - 75 TO 300 OHM US $3.25
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 Steren 200-490 Outdoor 75/300 Ohm Matching Transformer US $3.99
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 GOLD F MATCHING TRANSFORMER NO. 60-030G US $1.91
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 100x Matching Transformer HDTV HD 75-300 Ohm FM/UHF/VHF Balun Cable Adapter US $129.95
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 UHF VHF/FM Indoor/Outdoor Matching Transformer Coaxial US $3.95
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 6x Matching Transformer Adapter HDTV HD 75-300FM/UHF/VHF CABLE F-CONNECTOR BALUN US $12.95
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 Hosa Technology (MIT-156) Low to High Impedance Matching Transformer with XLR... US $13.99
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 RCA Indoor Matching Transformer VH54/LVH54N US $2.02
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 Channel Master CM 94444 Outdoor TV Antenna Balun Matching Transformer CM94444 US $6.84
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 New Male 75ohm./ 300ohm. Matching Transformer 2 Pieces US $3.99
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 75-Ohm Downlead / 300-Ohm TV Input Matching Transformer US $3.99
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 New RCA Push-On Matching Transformer VH58 US $8.76
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 2pcs UHF/VHF/FM Matching transformer BT 74 Taiwan US $1.20
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 RCA Push-on Matching Transformer -New- Free Ship US $3.99
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 RCA VH58 Push On Matching Transformer 300 ohm Flat Antenna to F Type Lead NEW ! US $4.99
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 Hosa MIT-156 Low to High Impedance Matching Transformer #MIT156 US $16.70
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 Sescom SES-XLR-ISO Inline XLR Line Matching Transformer US $22.95
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 Sescom SES-LZSLHZ-XF14 Low to Low/High Impedance Matching Transformer US $19.95
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 RCA Outdoor Matching Transformer by Audiovox VH101NV US $4.99
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 New Indoor UHF VHF Coaxial Matching Transformer 75/300Ω US $3.89
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 RCA Push On Matching Transformer VH58N US $1.58
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 CHANNEL MASTER 7982 MATCHING TRANSFORMER 75-300 OHM US $1.95
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 Hosa MIT-156 Low to High Impedance Matching Transformer US $19.99
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 3 - UHF VHF TV FM Coaxial Matching Transformer 75/300 OHM BARJAN 300-452 NEW US $6.99
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 Grey Matching Transformer Adapter XLR Female to 6.3mm Mono Male US $19.05
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 10- OB-3 OUTDOOR DC-BLOCKING MATCHING TRANSFORMER US $20.00
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 20pcs UHF/VHF/FM Matching transformer TV6101 Taiwan US $11.00
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 2pcs UHF/VHF/FM Matching transformer TV6101 Taiwan US $1.20
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 NEW RDL TX-LM2 Line To Mic Matching Transformer US $28.00
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 100pcs UHF/VHF/FM Matching transformer TV6101 Taiwan US $51.00
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 Line Matching Transformer, Autio-Technica, Lo-Z to Hi-Z, XLRF, NEW!! 日本への販売もOK！ US $12.95
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 Steren 75 To 300-ohm Matching Transformer US $3.99
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 USA UHF VHF TV FM Coaxial Matching Transformer 75/300Ω US $3.89
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 6 - UHF VHF TV FM Coaxial Matching Transformer 75/300Ω US $9.95
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 RCA VH58 PUSH MATCHING TRANSFORMER CONVERTS FLAT LEADS US $12.95
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 XLR Female (500ohm) to 1/4" Mono Male (50k ohm) Matching Transformer Adapter US $13.15
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 XLR Male (500 ohm) to 1/4" Mono Male (50k ohm) Matching Transformer Adapter US $13.99
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 Push On Matching Transformer UHF VHF FM Balun 75/300Ω US $3.89
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 NEW 300 TO 75 Ohms Matching Transformer US $4.99
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 MATCHING TRANSFORMER (300 OHM TO 75 OHM) for OLDER TV's US $5.99
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 UHF VHF TV FM Coaxial Matching Transformer 75/300 OHM MODEL # 300-452 BARJAN NEW US $3.75
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 RCA VH54 MATCHING INDOOR TRANSFORMER CONVERTS COAXIAL US $12.95
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 Steren 200-510 300-75 Ohm Matching Transformer FM/VHF/U US $1.00
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 Thomson Rca Push-on Matching Transformer - A/v Connector - F Connector (vh58n) US $3.52
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 2pcs 75/300 Ohm Matching Transformer for HDTV Antenna US $1.95
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 300 OHM TO 75 OHM MATCHING TRANSFORMER 4644 - 5 PIECES US $4.95
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 2 Matching Transformers - UHF/VHF/FM transformer 75/300 Ohm For HDTV Antenna US $1.91
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 RadioShack GoldSeries Matching Transformer US $6.95
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 Rca Vh54/lvh54n Vh54/lvh54 Indoor Matching Transformer US $1.75
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 NEW Ace Push On Matching Video Transformer 300 Ohm Black Card (30771) NEW US $4.11
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 10pcs 75/300 Ohm Matching Transformer for HDTV Antenna US $7.82
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 OEM RCA VH58N Push-On Matching Transformer Black US $2.57
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 10 PACK OF NEW F-TYPE MATCHING TRANSFORMER BALLUN'S - DISCOUNTS FOR VOLUME US $14.50
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 RCA OEM VH58N Push-On Matching Transformer Black US $2.57
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 Steren 200-500 75-300 Ohm Matching Transformer FM/UHF/VHF 2-Wire to Coax Adapter US $1.00
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 SES-LZSLHZ-XF14 Low Z to Switchable Lo or Hi Z Impedance Matching Transformer US $21.95
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 RCA OEM VH58N Push-On Matching Transformer Black US $2.57
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 PHILIPS MANT210 MNT210F VHF UHF FM INDOOR ANTENNA + MATCHING TRANSFORMER GREAT! US $19.99
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 Gemini Matching Transformer, Outdoor Type CV71 US $4.99
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 Roadpro RPMT UHF/VHF Matching Transformer 300 to 75 ohm US $4.25
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 OEM RCA VH58N Push-On Matching Transformer Black US $2.57
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 MATCHING TRANSFORMER UHF/VHF/FM US $3.95
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Matching Transformer
Intro to Audio Transformer
A transformer is an electrical device that allows an AC input signal to produce a related AC output signal without the input and output being physically connected together. The transformer offers several advantages in coupling signals from one circuit to another. A transformer is considered large, heavy, and expensive but it continues to be the most effective solution in many audio applications. Audio transformers improve sound quality by removing interference from audio signals. Audio transformer is generally encased in a magnetic shield which is filled with an epoxy resin that provides insulation, protects the windings, and prevents vibration of the core material. Some audio transformers do not have a center tap, while other devices have a center tap in only the primary side, only the secondary side, or in both the primary and secondary sides. Transformers can be manufactured with multiple primary or secondary windings.
The two types of audio transformers are step up/ step down transformers and unity 1.1 transformers. The basic use of step up transformer is signal level compatibility, and impedance compatibility. Use of unity1.1 transformers are DC blocking, radio frequency interference and ground lift. In step up transformer, the primary and secondary have a different number of windings, thus they have different impedances. A unity transformer allows an audio signal to pass unmodified from the primary to the secondary while blocking DC voltage and radio frequency interference (RFI). Pros of audio transformer is to match impedances, to increase or decrease signal level by up to 25 db. While unity 1:1 transformer is used to increase signal level by more than 25 db. Audio transformer is used in audio devices like microphones, speakers, tape drives to transmit voice and sound signals. The transformers have wide frequency bandwidth, low distortion and noise suppression.
Audio transformers are recognized as wide band transformers. The services that are related to audio transformers are current sense transformers, gate drive transformers, RF transformers, signal transformers, switch mode transformers and telecom transformers. Current sense transformers are used to detect and measure current. Gate drive transformers are used in applications such as switching power supplies. RF transformers transfer energy from one circuit to another by electromagnetic induction. Signal transformers transfer information from one circuit to another by electromagnetic induction. Switch mode transformers are generally used mainly in switching power supplies and DC-DC converters. Telecom transformers are used in applications which require high bandwidths and fast switching speeds.
About the Author
Nisha is a Copywriter of electronic transformer. She written many articles in various topics.For more information visit:power transformer. contact she at currenttransformer@gmail.com.
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