Forum
Board-Ansichtnix elektronisches (Elektronik)
verfasst von simi7
, D Südbrandenburg, 17.01.2019, 22:22 Uhr
(editiert von simi7 am 17.01.2019 um 22:39)
» https://imgur.com/a/p92cnYa
PN geht leider nicht, "Serverfehler".
1, this kit is a full integrated circuit frequency modulation, amplitude modulation radio, with high sensitivity, stable quality, good consistency, power consumption, loud pronunciation, etc.
2, the intermediate wave signal consists of input loop composed of ㄒㄧ and CA, after selection Enter the 10 pins in the IC and mix with the local oscillator signal in 1C: The local oscillator is the ideal experimental kit for electronic technology by the advantages of T25CB. And the IC's 5-pin internal oscillating circuit is composed. The mixed 465KHz difference frequency signal is output by the 1C 14-pin output. After the mid-week T3 and the ceramic filter CF2 frequency selection, the 16-pin input is used for the middle release, detection, and then by 23 feet. The output is coupled to the 24 pin for audio amplification via C14, and finally output to the speaker by 27 pins.
3. The FM signal is received by XT. The IF signal is output by the 14-pin output through the 10.7MHz ceramic filter CF1 and then enters the 17-pin for intermediate release, and is internally frequency-coded. The audio signal of the IC's 2wiHR frequency-recognition network is also output from the 23-pin output and then coupled to the 24th via C14 to drive the speaker. The C2 is sent to the 1C 12-pin for high-level, mixing. 9 feet are frequency selective circuits, 7 feet are connected to the local oscillator circuit, after mixing
4, SL is a quadruple variable capacitor, which is rotated by four separate variable capacitors on the same axis to meet the AM and FM tuning. Please pay attention to the small-capacity soldering to the 7-pin when installing. And 9 feet (for FM), another large-capacity two-weld is welded at 5 feet and 10 feet. CF2 is the intermediate frequency ceramic filter of AM; CF1 is the intermediate frequency ceramic filter of FM: T2 is the medium wave oscillation coil: CF3 is the frequency discriminator, T3 is the intermediate frequency transformer of AM: L1 is the input loop inductance of FM 4.5A: L2 is FM oscillation coil 3.5 turns
5. When you get the kit, the capacitors, 5, and the list of control components are counted one by one, and the components are measured with a multimeter, especially the tiles are in mind.
6. When welding, please weld the small components first, then the large components, and then the principle of welding the integrated blocks. The components should be attached to the bottom plate as much as possible. The "checking in the seat" must not be inserted into the wrong component, because the integrated block CXA I 69 I BM It is a double-row 28-foot patch-type structure produced by Sony Corporation of Japan. Its feet are arranged in a dense array. When welding, please use a pointed ferrochrome for rapid welding. If the welding is not successful, wait for the cooling and then carry out the next welding. In order to avoid burnt the integrated block, after welding, it should be repeatedly checked whether there is any false, false, wrong welding, whether there is a short circuit caused by dragging the tin, as long as the welding assembly according to the above requirements, a battery can be received to receive the broadcast (AM segment) FM antenna can be received by soldering the antenna. If the broadcast is not received, please check the circuit again for errors. Refer to the voltage reference value (static) of each pin in the attached table 1C of this manual. It may be very big for your debugging. help
7. Adjustment of medium wave (AM): Since various parameters are designed on the integrated block, the debugging is very simple, just pull the radio in the middle band and adjust the fine Adjustment of FM wave
8. FM wave Adjustment (Be sure to solder the antenna before adjustment): L1 and L2 are respectively adjusted to the high-level part (with the fine adjustment of the top of the adjustment CE). The oscillation frequency (with the fine adjustment of the top of the CD), 7, the adjustment is only used The inductives move their tightness. At this time, the adjustment of L2 is very heavy. It directly affects the number of receiving stations, that is, covering and receiving the radio. T2 and T3 have been adjusted to the specified frequency before leaving the factory, and only need to be fine-tuned left and right during adjustment. Two-component list
Die Absatznumerierung ist mir etwas verloren gegangen.
Vielleicht habe ich auch was doppelt erwischt, musst du mal kontrollieren.
Der google Übersetzer macht dann hoffentlich ein besseres deutsch draus.
Viel Spaß!
Bernd
Gesamter Thread:
, 17.01.2019, 17:52 (Elektronik), 17.01.2019, 17:59
, 17.01.2019, 18:15, 17.01.2019, 18:30, 17.01.2019, 18:35, 17.01.2019, 21:40, 17.01.2019, 21:46, 17.01.2019, 21:49, 17.01.2019, 21:56, 17.01.2019, 22:15, 17.01.2019, 22:22, 17.01.2019, 22:29, 17.01.2019, 22:55, 17.01.2019, 23:12, 17.01.2019, 23:27
, 18.01.2019, 00:01, 18.01.2019, 00:06, 18.01.2019, 00:51, 18.01.2019, 09:31, 18.01.2019, 09:43, 18.01.2019, 12:07, 18.01.2019, 15:17, 17.01.2019, 22:21, 17.01.2019, 21:35, 17.01.2019, 21:47
, 17.01.2019, 21:47, 18.01.2019, 09:45, 17.01.2019, 21:49