Banggood HEX3653 2PCS DIY FM Radio Electronic Welding Kit Instruction Manual
- June 5, 2024
- banggood
Table of Contents
Banggood HEX3653 2PCS DIY FM Radio Electronic Welding Kit
Purpose
- There are many types of electronic components in the kit: there are multiple electronic components such as resistors, capacitors, inductors, diodes, integrated circuits, earphone sockets, buttons, etc. There are many types of basic components. Users only need to bring their own stereo headset and 2 5 No. battery will do.
- Learn electronic circuits.
- Cultivate practical skills.
- Use double-sided epoxy resin PCB, which is especially suitable for students’ welding, instead of paper-based circuit boards or single-sided boards! Frequency Range: FM76~108MHZ
Advantages used in school training：
For electronic enthusiasts or electronic production of students in electronic
classes, this set of FM radio kit is specially optimized for the arrangement
of various components according to beginners, especially students or
enthusiasts who use welding tools for the first time. This kit is easy to
install and make The success rate is extremely high! Because it has been used
in many schools, we know its performance. This kit includes a pair of high-
quality stereo headphones! The advantages of using earphones also take into
account the students’ classroom noise problem!
Features and methods of use:
FM radio has the advantages of rich programs and good sound quality, and all
places have their own FM radio stations. This kit FM pocket computer select
radio adopts HEX3653 integrated block, 16-pin dual-row flat package, working
voltage is 1.8~3.6V, this circuit includes all the functions of FM radio from
the antenna to the frequency discrimination output audio signal, and also has
Search tuning circuit, signal detection circuit, squelch circuit, and
frequency-locked loop FLL circuit that compresses intermediate frequency
deviation. The intermediate frequency of the circuit is designed to be 70KHZ,
the peripheral circuit does not need an intermediate frequency transformer.
Welding sequence
Solder the SMD components first, then:
- Resistor
- Inductance
- Capacitor
- Second, transistor
- Button
- A headphone socket and switch
(Please pay attention to the position of the first pin of the integrated
circuit and electrolytic capacitors C1, C2 when welding The polarity of the
LED, the polarity of the light-emitting diode LED, the polarity of the
switching diode D1, D2) When welding the LED, be careful not to stay for a
long time, otherwise, it will be damaged! The electronic kit is suitable for
students’ teaching experiments in colleges and secondary schools. It is a
compulsory course for electronics majors, and is a good textbook (material)
for communication technology, information technology, and electromechanical
automation. It is also a good teaching material for elementary and middle
school students to carry out second-classroom activities.
If the jumper cap positions are 1 and 2, and 3 and 4 also have jumper caps, the A terminal under pin 1 must be connected to an external whip antenna
**Notes on the expansion interface
**
SMD component soldering skills: first fix the fir and the ninth pin, and if there problem with the position, then solder other pins; apply a little solder paste on the pins before soldering other pins, not too much Then, add a little solder to the tip of the soldering iron, and then solder other pins in sequence. Do not add too much solder. If tinning occurs, you can use a bamboo toothpick to remove it when the tin is melted! Please use sponge double-sided adhesive bonding or rubber bands to bind the battery box and the circuit board!
Button description
- PW is the power switch
- VOL-volume decreases
- VOL+volume increases
- SEEK- searches for low-frequency points
- SEEK+ searches for high-frequency points
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