Circuit Schematic HI-FI Stereo FM Transmitter 88 - 108 MHz using BA1404 IC

Transmitter. - This is electronic Circuit Schematic HI-FI Stereo FM Transmitter 88 - 108 MHz using BA1404 IC like in Figure 1 below. In this circuit schematic the basic component used is BA1404. 

In here we will give you global description about Circuit Schematic HI-FI Stereo FM Transmitter 88 - 108 MHz using BA1404 IC and then we will give you link to continue your reading from original source as external website.

Circuit Schematic

Figure 1. Circuit Schematic HI-FI Stereo FM Transmitter 88 - 108 MHz using BA1404 IC (Source: Electronic-DIY)

Component Part

• BA1404 IC
• 38KHz Crystal 
• L1 - 3.5 Turns Variable Coil 
• 1x PCB 
• 1x 38KHz Crystal Oscillator 
• 1x DIP-18 IC Socket 
• 1x 3.5T Variable Precision RF Coil 
• 1x 10uH Inductor 
• 4x 10uF/50V Gold Audio Capacitors 
• 4x 1nF Ceramic Capacitors 
• 2x 1nF Mylar Capacitors 
• 1x 220pF Ceramic Capacitor 
• 5x 10pF Ceramic Capacitors 
• 2x 47K 1% Metal Film Resistors 
• 2x 27K 1% Metal Film Resistors 
• 1x 150K 1% Metal Film Resistor 
• 1x 5.6K 1% Metal Film Resistor 
• 1x 270 1% Metal Film Resistor

Description

Circuit schematic like in Figure 1 above is Circuit Schematic HI-FI Stereo FM Transmitter 88 - 108 MHz using BA1404 IC. Electronic-Diy site describe that One of the qualities of BA1404 FM transmitter is excellent frequency stability. This is mainly due to a use of high quality 3.5 turn variable coil. Tunable RF coils are ideal for precise frequency tuning because their magnet wire is halfway embedded within the plastic, which minimizes frequency drifts. Regular air coils are not preferred for professional broadcasting because the coil expands and contracts with temperature changes. That's the very reason why variable coil was chosen as a substitution for an air coil and a variable capacitor.

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