Use photovoltaic panels to charge cell phones and digital devices:
Preparation of materials:
To purchase a solar cell, it is recommended to purchase one Class A battery panel. Output voltage: 5.5V, output power: 3~5W.
Buy 1 Schottky diode.
Buy a USB plug.
Preparation method:
Connect the anode of the diode to the anode on the back of the solar panel, and the cathode of the diode to the anode of the socket USB via wire. .
The negative pole on the back of the solar panel is connected to the negative pole of the USB socket via a wire.
Make a support or enclosure for the solar panel.
Production is complete.
The appearance of the produced charger is as follows:
Explanation: Since the solar cell receives different light intensities, the output voltage will change significantly if the solar cell. WhenIf the battery is exposed to insufficient light, it cannot produce enough voltage and current to charge mobile phones or digital products. Additionally, solar cells will age over time, causing the output voltage and current to attenuate, which will gradually lengthen the charging time.
●? I hope my answer can be useful to you. If there is something you don't understand, you can ask.
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● ?The above content is written based on from the personal experience of "Stupid Don't Know", only represents personal views and opinions, no one can modify, delete or add at will; plagiarism is strictly prohibited; If you must cite, please indicate the source.
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I want to DIY a solar chargere to recharge my cell phone. Can anyone give me a simple solution?
Simply create a 5V voltage stabilizing circuit, then use a female USB connector for output, so you can charge it directly by plugging in the mobile phone data cable, or you can also charge the mobile power supply.
Simply use the 7805 to create an integrated voltage regulator and add a larger heatsink. Because your current is relatively large, the heat will be greater.
How to make a solar generator yourself
Buy a solar panel and check the cell phone charging voltage. How many volts does the solar panel produce? , generally buy more than 5V, then add a diode, -0.7 diode, for example, the solar output is 5.7V, then add a diode, it is relatively simple
Make your own energy productionsolar energy device
< p>In my previous blog, I wrote about decorating my own house by myself.Zi, DIY car wash tools, DIY household sewage recycling device, device DIY household circulating water humidifier, DIY household burglar alarm device, DIY household dish washing appliance, DIY car cooking appliance, what I want to share with you today is how make your own solar power generation device!1. Buy equipment
1. Polysilicon solar circuit board, 200 Wp, 130 cm long, 70 cm wide, 15 kg, 650 yuan,
2. battery Two pieces, 120ah, 900 yuan
3. Charge and discharge overload protector, 80 yuan
4. 1kw inverter, 24v to 220v, 400 yuan,
5. Battery voltage display meter, 10 yuan.
6. 100 yuan for 50 meters of wire, 2 yuan for a bbox of clips, 4 yuan for plugs, 4 yuan for two plugs
7.
< p>8. Mains to charger 24 V 60 A, 120 yuan9. 2 plugs, 2 yuan, a 220 V relay, 10 yuan and a socket, 5 yuan. A total of 17 yuan
II. Installation
1. Attach the solar panel bracket to the sunny wall, which costs 100 yuan.
2. solar circuit board with the bracket is tilted towards the sun at an angle of 30 degrees.
3. Connection
1. Place the two batteries side by side and connect the positive and negative terminals.
2. Arrange the inner wires and secure them with clips. Since the house has been renovated, the wiring must be run along the baseboards to hide them.
3. Connect the interior wires to the outlet, plug in the timer switch, and set the switch to open at 6:00 and close at 6:30.
4. Set the charging time Connect the positive and negative poles of the battery, the positive poles and nnegative poles of the inverter, the positive and negative poles of the overload protector, the positive and negative poles of the voltage display meter and the positive and negative poles. solar panels to the positive and negative poles of the battery respectively.
5. Connect the contacts and plugs of the relay, connect the main power plug to the solar timer, connect the common power plug to the mains timer, and set the mains timer to start at 6am. Morning. Close at 6:30 and connect both normally open and normally closed ends to the outlet. , if you don't understand here, please refer to my blog post on Yelianzhongxin's blog; “Can a relay be used as a dual power automatic transfer switch? » 》
6. Insert the plug of the rice cooker (500 W) into the socket connected to the relay
After the above 6 steps, the power generation systemdomestic solar energy is completed. the next day, the electric rice cooker will automatically cook rice at 7 o'clock, stir-fry something, eat for a while, finish washing and go to work.
Of course, the battery still has some power and can be used as a night or bathroom light, so I won't go into detail here.
It should be noted that both items 8 and 9 above can be saved, but they may bring inconvenience into your life since solar energy continues to work. On cloudy days, the power cannot be supplied and the device itself must also consume part of the energy. When the undervoltage is too low (generally considered to be less than 22.2 V), the power must be replenished to avoid causing damage. the battery and reducing its life, therefore it must be supplemented by mains power, and the purpose of item 9 est to use a relay as a transfer switch to automatically connect to mains power when solar power is not working, and continue to allow the charged rice cooker to work.