Using the TDA7021T integrated radio receiver circuit can be designed a very simple high efficiency portable radio receiver circuit fully compatible for applications using the low-voltage micro tuning system (MTS). The TDA7021T has a frequency locked loop (FLL) system with an intermediate frequency of 76 kHz. The selectivity is obtained by active RC filters. The only function to be tuned is the resonant frequency of the oscillator.
Because of the low intermediate frequency, low pass filtering of the MUX signal is required to avoid noise when receiving stereo. 50 kHz roll-off compensation is needed because of the low pass characteristic of the FLL.
For mono application this amplifier can be used to directly drive an earphone. The field-strength detector enables field-strength dependent channel separation control.
With a combination of a low voltage PLL stereo decoder ( TDA7040T ) and a low voltage mono/stereo power amplifier we can build a simple portable radio .
For this radio receiver circuit we need a 5V dc power supply .
|Antenna selector circuit diagram using PIN diodes||
This antenna selector circuit diagram is designed using common electronic components and is very...
|Shortwave radio receiver electronic project based on 2N2222||
This shortwave radio receiver electronic project is based on 2N2222 transistors and has an...
|Long wave radio and medium wave radio receiver using TBA120||
Using electronic circuit diagram can b designed a very simple long wave radio and medium wave...
|ADF4007 Local Oscillator electronic project||
Using ADF4007 high frequency divider PLL synthesizer can be designed a variety of communications...
|RF amplifier circuit diagram||
This RF amplifier circuit is a very simple and is designed to work for 10 meters band (26 ... 30...
|LA1800 portable am fm radio circuit||
This portable am fm radio circuit is designed using the LA1800 IC and some other external...
|RF detector electronic project circuit design using 2N2222 transistors||
This electronic rf detector electronic project is designed using common transistors and other...
|UHF amplifier electronic project using transistor||
Using electronic diagram below can be design a UHF amplifier useful in situations where the TV...
|ADF7242 low power transceiver circuit design||
This low power transceiver circuit project is designed using the ADF7242 fully integrated low-...