Mini BA1404 Stereo FM Transmitter

Tuesday, February 7th, 2017 - Radio Frequency

Mini stereo FM transmitter circuit is made using a BA1404 IC specifically designed as a stereo FM transmitter low voltage and low power. Mini stereo FM transmitter circuit is working with a low DC voltage source + 1.5 volts to +3 volts DC. Mini stereo FM transmitter circuit BA1404 has a low output power and range of the short-range jets to add to this mini stereo FM transmitter needs to be added or RF amplifier RF power amplifier with a larger one. Mini stereo FM transmitter circuit is working on FM broadcast frequency range from 75 MHz to 108 MHz operating frequency can be set by adjusting the ferrite core L1. Complete range and list of components to make a mini stereo FM transmitter BA1404 can be directly seen in the figure the following circuit.

Mini BA1404 Stereo FM Transmitter

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L1 coil at the mini stereo FM transmitter circuit is made with wire email above 0.6 mm were rolled in containers wrapped around a ferrite core 3mm by 3.5 convolution. L1 serves to determine the working frequency transmitter, so as to adjust the working frequency of the transmitter circuit FM stereo tuning done on ferrite core L1 adjustments are working to obtain the desired position.

IC BA1404 is a FM stereo transmitter with many amenities. Contained in the IC BA1404 FM stereo modulator circuit that can produce a stereo signal (L + R and LR) with pilot 19 KHz and 38KHz oscillator frequency of the external crystal. With special design special IC BA1404 used as a mini stereo FM transmitter, FM transmitter BA1404 stereo mini is often applied to the device:

  • FM stereo wireless link
  • Stereo FM transmitter in the car
  • Wireless microphone

Mini stereo FM transmitter circuit BA1404 above have a stable RF output and can be boosted with a larger FM amplifier.

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