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XT3.58MBP Datasheet(PDF) 4 Page - Token Electronics Industry Co., Ltd.

Part No. XT3.58MBP
Description  CERAMIC TRAP FILTERS Ceramic Trap For TV/VCR Stage
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Maker  TOKEN [Token Electronics Industry Co., Ltd.]
Homepage  http://www.token.com.tw

XT3.58MBP Datasheet(HTML) 4 Page - Token Electronics Industry Co., Ltd.

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What is Trap
Band Eliminate Filter (B. E. F.) which blocks or attenuates particular frequency is called trap.
Contrariwise, ceramic filter passes only particular frequency. Sound trap for TV set is one of the
famous example of B. E. F.of the FM-IF circuit.
In TV set, video signal is used in picture amplitude circuit after video signal detection block,
ceramic resonator is insert here and trap circuit is formed in order to eliminate sound signal
involved in video signal.
Type of Ceramic Trap
Token’s Ceramic trap is divided into 2 types:
1. Two-Terminal Ceramic Trap:
Two-terminal ceramic Trap is used in Black and White TV sets since the number of peripheral
components can be reduced, though its attenuation isn’t so much.
2. Three-Terminal Ceramic Trap:
Three-terminal ceramic trap has a monolith structure formed from 2 ceramic resonators. The
characteristic of a three-terminal ceramic trap equals two two-terminal ceramic trap. The
three-terminal ceramic trap needs additional coil, it is used in Color TV set and VCR because to
its high attenuation.
Design Notes of Ceramic Trap
Design Notes
Ceramic Trap
02 of 13
Version 2010
rfq token.com.tw

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