ZX2011 супер гетеродинный комплект AM радио с интегральной

ZX2011 супер гетеродинный комплект AM радио с интегральной

Model 1：1.4 version kit (double panel without battery)

>>This product is a spare part for assembling an FM radio circuit board, not a complete machine.

>>This product is a circuit board kit, without a shell and speakers, batteries/external power supply and speakers/earphones need to be brought by yourself.

>>This product is a pure frequency modulation (FM) radio kit and cannot receive amplitude modulation (AM) radio.

Version 1.4 removes the wiring and holes that are not practical on the circuit board on the basis of version 1.3, and the circuit remains unchanged.

The ICR1260F FM radio kit uses three SANYO dedicated chips to form the receiving part: LA1186N is an FM front-end chip, which is used in many home audio products. LA1260 is an FM/AM mid-amp chip, which is currently commonly used in mid-to-high-end radios. LA3361 is a very classic stereo decoding chip, and its compatible products are numerous. The combination of these three chips and 2025 two-channel power amplifier can provide high reception performance, suitable for amateur radio amateurs, and can also be used as entry-level FM stereo equipment.

【product name】

ICR1260F type integrated circuit FM radio circuit board assembly kit v1.3/v1.0

【Main Features】

1. Receiving frequency: 88~108MHz FM (FM radio frequency band);

2. Stereo demodulation: yes;

3. Power supply voltage: 7.5V;

4. Output power: 1.5W/4Ω×2;

5. Circuit board size: 180mm x 110mm.

【Features】

1. High sensitivity, you can listen to many radio stations without pulling out the rod antenna;

2. With automatic frequency control function (AFC) that can be turned off;

3. The complex and perfect low-pass filter minimizes the high-frequency noise output by the decoder;

4. The stereo function can be turned off manually;

5. Rich on-board interfaces and indicators, easy to debug;

6. 2025 power amplifier with high power and good sound quality;

7. Equipped with a protective plate for the lithium battery, and has the activation function of the protective plate, which is convenient and safe to use;

8. The audio capacitor adopts a large number of film capacitors, and the configuration exceeds that of traditional tape recorders.

【product description】

1. The circuit of this kit is designed according to the official data sheet of the chip and some classic cases. Practice has proved that it has the advantages of easy production and debugging, and the effect is far better than the simple discrete circuit;

2. Capacitors with high stability requirements, such as resonant capacitors, are equipped with expensive mica capacitors or NPO series ceramic capacitors. Other capacitors with small capacity are ceramic capacitors or film capacitors, and large-capacity capacitors (μF level) are electrolytic capacitors;

3. Audio coupling and filter capacitors use film capacitors or electrolytic capacitors;

4. The variable capacitor uses CBM223F FM special double-connected variable capacitor, which has a better feel;

5. The base of the circuit board is glass fiber material, the thickness is measured about 1.5~1.6mm, the single-sided green/butter white characters, the pads are sprayed with tin, and can be directly welded without grinding;

6. There may be some scratches and dust on the board base surface and copper foil surface, as well as traces of board washing;

7. The circuit board obtained by the buyer may be slightly different from the sample in the picture, mainly due to the change of the component position and the same circuit structure. This product has been modified and perfected for n times from the trial production sample to the sold product (mainly modifying the wiring of the circuit board), and it is still in the process of continuous improvement. Usually minor and insubstantial modifications, such as slight movement of component positions and minor adjustments to wiring, will not change the version number, nor will they not be re-photographed and uploaded, hereby declare;

8. The version of the circuit board of the kit is 1.1, and the version of the circuit board of the finished board is 1.0, the difference between the two is very small, and the effect is the same;

9. The manual contains circuit schematic diagram and circuit board diagram, as well as debugging methods and experience under amateur conditions. If more information and professional debugging methods are needed, please download or refer to relevant books online.

【Illustration and text】