Customized IFT Coil (IF transformer ) and Variable Inductor
Sep 02, 2016
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Type : IFT series
Intermediate frequency (period) of the receiving frequency band. Also called IF transformer .
Function
During the receiving circuit of the wireless signal, in order to amplify the weak signal (especially for multistage amplification circuit), usually the modulation of amplification for the received signal is a fixed frequency (such as China's amplitude modulation radio receiver is transferred to the 465KHZ).
The role of IFT in the circuit is mainly
Amplify voltage signal
Signal coupling
Frequency monitoring
Features:
IFT Coils with Variable Inductor,
Plastic, copper or other shell with air coil to be molded
Shield cover protect
Firm structure
Anti-interference
Adjustable inductance value
Suitable for radio receivers and AM/FM radios,
Used for wirelesscommunication systems,
Used for remote controls for toys and equipment
Applied in radio transmitter
Adjustable coils with wide induction range
Designed for application in different types of circuits
With internal capacitors
SMD version is available
Variable inductor and coils with wide range of inductance
Designed for application in different types of circuits
Customized designs and electronic parameters are accepted
Various dimensions are available
With inner capacitors
Applications:
RF radio, wireless transceiver and security field
FM radio, TV receiver and transceiver
Car, wireless telecommunication
Radio Communications
Remote Control Applications
RF electronic application
car reversing radar
cordless phone and more
Electronic equipment
Video tape recorders
IFT coil working principle
It is the intermediate frequency transformer (commonly known as IFT coil), has a fixed resonant circuit of transformer special superheterodyne transistor in the resonant circuit but can be adjusted in a certain range, so that the access circuit can achieve stable resonant frequency (465kHz). With the help of trimming core relative position to complete the adjustion.
Radio medium frequency transformer is mostly monotonous harmonic type, the structure is simple and small profile. Due to the low input and output impedance of the transistor, in order that the intermediate frequency transformer can match with the input and output impedance of the transistor, the primary is with tap and with a secondary coupling coil with a small number of turns. The advantages of the double tuning type are good selectivity and wide frequency band, and are used in the high performance radio.
The transistor radio is usually used in the two stage if amplifier, so it is necessary to use three weeks before and after the coupling and transmission of the signal. In the actual circuit, the BZ1, BZ2, BZ3 and other symbols are commonly used in the middle of the week. In use, they are not free to change their position in the circuit.
Through-hole type
SMD Type
For other products - switching power transformer
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FULLSTAR ADVANTAGES
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