MAKING RADIO IC

MAKING RADIO IC

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On: 30 Jan, 2021

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Category: Circuit

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PREPARATION OF TOOLS AND MATERIALS

Materials for making an IC radio receiver can be seen in Figure 8.1 below.

List of components:

R1, R7 = 470 K resistance
R2 = 180 K resistance
R3 = 56 K resistance
R4 = 1 K ...

PREPARATION OF TOOLS AND MATERIALS

Materials for making an IC radio receiver can be seen in Figure 8.1 below.

List of components:

R1, R7 = 470 K resistance
R2 = 180 K resistance
R3 = 56 K resistance
R4 = 1 K resistance
R5 = 100 K resistance
R6 = 10 K resistance
VR = Potentio 5 K
IC1 = LM 1820
IC2 = LM 386
C2, C9, C12 = 10 uF capacitor
C3 = 10 pF capacitor
C4, C5 = 100 nF capacitor
C6 = 20 nF capacitor
C7, C8 = 10 nF capacitor
C7, C10 = 220 nF capacitor
C11 = Capacitor 100 nF
C13 = 50 nF capacitor
C14 = 20 nF capacitor
D = IN 914 / IN 60 diode
L1 = MW antenna spool
L2 = MW Oscillator Spool
T1 = Yellow MF transformer
T2 = white MF transformer
T3 = black MF transformer
LS = sound tool with 850 resistance and 0.5 W power

radio receiver circuit


The tools needed to make an IC radio include:
1) solder 30-40 W,
2) electronic equipment,
3) multimeter,
4) small cable three colors / kinds,
5) tin or tenol,
6) glue, and
7) sandpaper.

You have learned PCB manufacturing in Chapter 1. Try to learn more about the steps for making PCBs so you better understand. Figure 8.2 below is an example of a radio IC PCB.

example of an ic radio pcb

INSTALLATION OF COMPONENTS ON CHASSIS,
Installation of all components that must be assembled on the PCB must be done properly, there should be no upside-down installation of the component legs. Before installing, the legs of these components must be cleaned. When bending the component legs, it should be calculated correctly so that the components are not damaged so that they can be properly attached to the PCB.
Before installing, it is recommended that each component be tested / tested with a multimeter to determine the condition before being installed, whether it is still good or damaged. This is very important to avoid further difficulties due to the installation of damaged components.
Some of the components that need to be tested are:


1) oscillator spool;
2) MF transformer 1, 2, 3;
3) diodes;
4) elco or electrolytic capacitor;
5) loudspeaker.

Testing components will be discussed in the next chapter of radio IC component testing. To get safety when soldering, IC components should be installed using sockets.

MAINTENANCE AND STORAGE OF COMPONENTS
Some things that must be considered when soldering are as follows.
1. Soldering is done first on heat-resistant components, such as resistors and capacitors.
2. For components that are installed with a socket, remove the component from the socket and then solder the socket legs to the PCB.
3. For components that are sensitive to heat but installed without a socket, soldering should be carried out in a gradual and careful manner.
4. To keep the temperature or heat of the soldering stable, occasionally clean the solder eyes with solder paste or gondorukem.

An example of the results of placing the components on the PCB after soldering can be seen in Figure 8.3 below.

example of laying out the components on a pcb after soldering


TESTING THE CIRCUIT RESULT


Trying out a series is a lot of fun, especially if the series you are trying to try works well. The steps that need to be taken when testing the circuit are as follows.


1. Connect the circuit with a DC current source with a voltage of 6 V.
2. Turn the potentiometer to the on position and open the volume to 30%.
3. In this situation the loudspeaker hisses when the circuit is good or correct.
4. Select one of the clearest transmitters by rotating the variable part of the capacitor.
5. To get the waveform of the transmitter, perform the metering on the MF3, MF2, and MF1 transformers with a non-metallic screwdriver. Continue tuning on the oscillator spool and on the antenna spool so that you get a really good catch of the station.

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