The hand crank flashlight radio is definitely a good thing. It has multiple uses. In places where there is no mains power or there is a power outage, you can run the generator several times and listen for a long time. In addition, it can also be used as a hand-cranked flashlight in case of natural disasters at night.
This type of radio is very environmentally friendly. I have a radio besides being operated by hand to produce electricity and light, it also has a solar charging function and an audible alarm function. I don't need to charge it at ordinary times. I just shake it a few times when I use it.
Are there any radios with lithium batteries?
Most of these flashlights use a capacitor to temporarily store charge. The hand crank flashlight is actually a magnet that cuts the lmagnetic field lines in a set of coils to generate charges and convert mechanical energy into electrical energy. The working principle of the press type is actually to cut the magnetic induction line to generate a charge. It typically uses a capacitor to store charge and then drives a high-brightness LED to emit light. The time is also very short. from mechanical energy to electrical energy. This low amount of electricity is because the battery cannot be charged at all. The reason is that the efficiency of this power generation method is low and cannot support the charging current of ordinary rechargeable batteries (normal chargers are slow). to hundreds of ma, and the electricity generated by your method is at most, it can only reach tens of ma in an instant. This is no more than ten hours for a 600 ma battery.) Andhuman strength is limited. hold it and press it for several hours. It is recommended to use solar cells for charging, a polycrystalline silicon solar cell with an area of about 17-25cm can output 5V, hundreds of ma of current. , please give me more advice/There is also, just like a Desheng radio, it is a cell phone. The principle of shaking electricity is also very simple, that is, the large gear drives the small gear and then drives the micro generator to produce electricity. Due to the characteristics of the radio (it does not consume much power), this technology is more convenient to use. The cell phone you mentioned is hand cranked. Electricity production is only used in emergencies. is not very high. The most important thing is that people take the initiative. Solar cells are generally capable of chsilver cell phones (5.5 V, 80 mA) and cost 20 yuan each. If you buy them from a company, this will be the case. be cheaper to buy it this way. Of course, it depends on where you are. I made a solar cell phone charger with a charging current of 240 mA. It costs 60 yuan in total, which is considered cheap. more than 20 hours standby time after one charge. Solar mobile phone chargers sold on the market for between 100 and 200 yuan are actually made of two solar cells connected in parallel. The manufacturer costs around 20 yuan.
Are there any that also have a radio function? Something that has the function of storing music, can surf the Internet and comes with headphones?
Why not?
Let's talk about the radio with lithium battery first, "Kailon D95L Digital Processing DSP Radio", this one is a radio with lithium batteryie lithium, it is not big, I like this one better. Second, there is another one: Degen DE13. Although it does not have a lithium battery, it only has a nickel-metal hydride battery, but it has more functions and is compact in size. It has a radio function, a flashlight function, and it is also equipped with a solar battery. ifIf I'm in the same city, I can show it to you.
Let's talk about recorders. Most recorders now have radio functions. Many higher quality voice recorder models from brands like Sony, Samsung, Sanyo and Patriot have radio functions. It's just that the price is slightly higher. Like what I use: The Samsung YV150Q recorder has a radio function.
In addition, many recorders like Newman and Jinghua also have radio functions. For example, Newman's RV-6 and RV-9 both have radio capabilities, they both use AA batteries and are not too expensive, less than 400 yuan.
There is also "Jinghua DVR-901" which also has a radio with built-in lithium battery and the price is not high.
Note:
Prices vary greatly by location due to different purchasing channels. This price is exactly what I saw here. You should refer to the price in your area.
● The above content is written based on happy_slug's personal experience. Copyright is reserved by happy_slug. Without permission, people searching for information on Baidu are not allowed to copy or paste at will.
I want to buy a radio and I bought the Degen DE13 and DE16. Can anyone give me some advice on which one is more durable?
As far as I know, the radio currently does not have the ability to connect to the Internet. But it has a functionHand-cranked charging ion. There is no camera function. Portable yes. There are headphones.
The radio has the function of collecting music and storing music. It has the functions of earphones, crank charging function, lighting function, etc.
The following radios recommended for you are what you need, but they do not have all the functions:
1. Degen DE1125 full-band digital tuning radio, which can record and playback. and receive. 300 yuan.
2. Dejin DE1128 has 8 functions: full band digital radio, MP3, recording, repeat, amplification, active speakers, TF card playback and e-books. 388 yuan.
3. Dejin DE16 four-band radio with hand-cranked power generation, lighting, alarm and solar battery charging. 115 yuan
4. Dejin DE13 full band radio with hand crank power generation and solar charging functions. Funcsound and light emergency alarm. Can charge mobile phones, MP3, MP4, etc. Energy-saving lighting, convenient for night lighting, 110 yuan
5. Desheng Green-88 manual radio, environmentally friendly radio, lighting, rechargeable battery. 110 yuan.
The crank power generation of these two radios is purely redundant. Neither is good. The 13s are cheap, while the 16s cost over 100 yuan.
Degen DE13 is not only a radio but also has many interesting features
The sound of the speaker is not bad
The panel solar charging is very practical< /p>
Emergency lights are not just decorations
Manual power generation is also a user-friendly design
It can also charge cell phones and other digital products.
You should buy one when playing outdoorsr
Short waves are average ``` It would be more perfect if there was aviation and SSB
DE16 claims to be an eco-friendly radio environment
FM, campus FM, medium wave, shortwave full band radio
FM, FML, MW, SW WORLD RECEIVER
FM/campus FM/wave medium/shortwave 1-4 Broadcast reception.
Energy-saving lighting lamps and energy-saving reading lamps are convenient for lighting and reading at night.
External power socket.
Using excellent radio integrated circuits, high sensitivity and high signal-to-noise ratio.
Using high-quality internal magnetic speakers, the sound is loud and the sound quality is magnificent.
Equipped with a 180 degree rotating rod antenna for easy reception.
Emergency alarm function.
Portable body design, easy to carry.
Nickel-metal hydride batteryas integrated.
Charging the solar battery.
Crank to produce electricity.
External headphone jack.
However, the current price is already commendable.
Talk about the flaws
The finish is average since the solar charge needs to be dealt with on the material. , otherwise sunlight Charging will accelerate the aging of internal components```
Should you make a jacket at random