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Характеристики
Комплект для самостоятельной сборки схемной платы однотрубного полупроводникового радиоприемника 636 восстановления прямого усилителя и производства мелких деталей.
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| Месяц | Минимальная цена | Макс. стоимость | Цена |
|---|---|---|---|
| Aug-17-2025 | 3049.14 руб. | 3110.77 руб. | 3079.5 руб. |
| Jul-17-2025 | 2473.87 руб. | 2522.12 руб. | 2497.5 руб. |
| Jun-17-2025 | 3001.75 руб. | 3061.94 руб. | 3031 руб. |
| May-17-2025 | 2977.18 руб. | 3037.7 руб. | 3007 руб. |
| Apr-17-2025 | 2377.49 руб. | 2425.72 руб. | 2401 руб. |
| Mar-17-2025 | 2929.17 руб. | 2988.59 руб. | 2958.5 руб. |
| Feb-17-2025 | 2905.33 руб. | 2963.42 руб. | 2934 руб. |
| Jan-17-2025 | 2881.38 руб. | 2939.55 руб. | 2910 руб. |
Описание товара
modname=ckeditor modname=ckeditor
The kit is based on a number of historical636Single tube radio data improved from，Two types of variable capacitors can be installed on the circuit board，It can also increase components and improve performance，Learn for players、Space is reserved for playing，It is a good textbook for learning electronic technology，It is also a rare collection、Nostalgic products。。
Made with this kit636Single tube radio circuit board
Historical636Single tube radio
【Trade name】636Assembly kit-type single tube radio(v2.1edition)
【Main characteristics】 1. Receiving frequency：525~1605kHz(Medium wave)； 2. Standard：amplitude modulation(AM) 2. Power Supply：2section5No. 1 alkaline battery，Voltage3V； 3. Earphone impedance：300~2200Ω； 4. Board size：95mmx68mm 。
【Kit composition】
【Purchase suggestions】 Friends with hands-on ability can buy kits and assemble them by themselves。If the buyer cannot assemble the kit successfully，The welded board can be sent back to our shop，Our shop can diagnose and debug for buyers free of charge，The buyer shall bear the round-trip fee。 The finished circuit board is the finished circuit board assembled and debugged，Headphones and batteries are not included，After the buyer gets it, install the battery，Plug in a high impedance headset to listen。 Highly recommended for playersMade in our shop600ΩHigh impedance dynamic coil earphone，High sensitivity for single pipe machine，Sound quality comparable to FM，The effect is excellent。
【Graphic description】
636Single Tube Radio Kit(v2.0)Circuit diagram Historical636There are many versions of single tube machines，This set of circuits is the result of their trade-offs。amongR1、 C3It is added to the basic circuit，See for details《radio》magazine1964Year4stage。If it is made according to the basic circuit, it can not be installed C3(10μElectrolytic capacitor)，Weld a wire toR1(3.9k)Position，As shown in the sample in the figure。
One was used for the sample3AK20Germanium switching triode(Past disposals)Make high discharge pipe，replace3AG1Good effect
The components are arranged in a neat line
It is very convenient to adjust the bias current of high discharge tube with on-board micro potentiometer，There is no need to connect external potentiometers as in the past
The red coil on the magnetic rod is the regeneration coilL3，Players need to use plastic thin wires according to the actual effect1~2circle。 The jumper is used to test the working current of the high-voltage discharge tube，Plug in the jumper cap after measurement，Very convenient。 10μElectrolytic capacitors and3.9kThe resistor is not installed，This is636Basic circuit of single tube machine，They can improve performance。 There are two elements，Silicon tube can be assembled conveniently636Single tube machine，Just put all the components with positive and negative polarity(Including electricity pool)The polarity of can be changed。 This kit is designed with on-board micro potentiometer series protection resistor(27k/220k)To adjust the bias flow of high-pressure discharge pipe，Easy to operate 。The bias resistance required for regeneration is large，Can be27kReplace protective resistor with220kresistance。
【Product description】 1. The circuit diagram of this kit has been optimized compared with the traditional circuit、change，Please read the instructions for details。Friends who like nostalgia can also ignore these changes，It is made according to the basic circuit handed down in history； 2. The circuit board base is made of glass fiber material，Measured thickness approx1.5~1.6mm，Butter white，Solder pad spraying，It can be welded directly without grinding。There may be some scratch marks and dust on the base surface and copper foil surface，And traces of washing the board； 3. This kit replaces some old model elements in traditional circuits with modern models，The effect is better than that of the teacher； 4. The circuit board is designed with some pads for old large-size components，Nostalgic friends can collect old-fashioned components and assemble the machine by themselves； 5. Because our goods are constantly improving，The circuit board obtained by the buyer may be slightly different from the sample in the picture，Mainly component location、Change of dimension drawing text，The circuit structure is basically unchanged。Usually minor version upgrades will not be re photographed and uploaded，It is hereby declared that。
【Update content】 Updated to2.1edition，Circuit unchanged，Only minor modifications are made to the circuit board wiring，Almost no change in appearance，Therefore, it is still used2.0Version of the picture。
【Known error】 Not found。 【Defect statement】 1. The circuit board is asymmetric on both sides(Especially single panel)，There will be slight natural bending，Large size boards are particularly obvious，However, it has no impact on normal use； 2. Because printed circuit board manufacturers produce multilayer boards(Double panel is a kind of multilayer board)Mainly，Right amateurDIYThe features of the single panel used are not familiar，The single panel is often treated as a multilayer board to metalize the hole wall。Generally, single panel does not need metallized hole wall，But if there is metallized hole wall, it is not a fatal error，It will not affect the normal operation of the circuit，Only when welding components, greater welding power is required，Increase the temperature of the soldering iron； 3. The copper foil of the circuit board and the board base are bonded with adhesive，For a long time、repeatedly、Multiple soldering，It will cause the copper foil to fall off； 4. The internal space of the variable capacitor is limited，The fixing screw is just long enough to pass through the circuit board and threaded holes，If it is separated from the circuit board, screw all the screws into the variable capacitor，The screw will damage the internal blade of the variable capacitor； 5. The antenna magnet is slightly bent，The larger the size, the more obvious，However, it has no impact on the service performance； 6. High frequency magnetic core material(Antenna magnet is one of them)It is porcelain，Vulnerable to brittle fracture due to collision。 【matters needing attention】 1. High impedance earphones are required to listen to the single tube machine，If using ordinary low resistance(8Ω、32ΩEqual specification)Middle resistance(150Ω、300ΩEqual specification)Headphone listening，The sound will be very small； 2. Play about regeneration，The owner suggested that players do not connect the regeneration circuit before debugging(Do not weldL3，Or disconnect the wire fracture at the bottom of the plateJ1)，Adjust the circuit to be able to listen normally without regeneration，Then enable regeneration。Please read the kit manual for details； 3. 636The single tube machine uses the old germanium high frequency triode，The quality of triodes produced in the past decade is poor，The pass rate is very low，What can be bought now is basically the previous inventory or defective products screened by classification(Really qualified products are expensive，You can't buy it for a few cents)。The performance of old triode is uneven，Very discrete，The performance of single tube machine depends heavily on the performance of triode，Most works have the problem of uneven sensitivity，Generally, the low-end frequency sensitivity is high，High frequency and low sensitivity，Or the performance is not improved after regeneration，It's worse。 Individual good tubes can be used without regeneration，Uniform and good sensitivity can be obtained，And selectivity。In short, we should make a good single tube machine，You need to prepare a pile of triodes yourself，Test by test screening。To get a job, you have to look for gold in the sand，It's a game of patience and luck，The fun of assembling a radio is in it。Смотрите так же другие товары: