Originally it was called a dual-powered calculator, but I discovered that if my calculator's solar panel was backlit, the numbers would not display clearly, if at all. I simply removed a solar panel and installed it on another calculator. without exposing it to the sun. Just the sun in the light.
Even if it is a brand new 5# dry cell, if the solar cell does not work, you will not see the numbers on the screen if you connect the positive and negative poles solar energy. the new cell dries in parallel, nothing will happen. But if there is no dry cell, there will also be a solar cell.
Do solar cells on calculators make sense
Solar cells are more environmentally friendly and do not need to be replaced. More convenient to use.
In fact, solar cells for calculationThese are cheaper and more convenient than batteries. All batteries and circuitry self-discharge and slowly deplete when not in use. Let's take the most common silver button battery as an example. A small battery can theoretically be used for a calculator for more than ten years, but in practice one or two. two years will be exhausted. Of course, you can use the best batteries that have almost no self-discharge. The problem is that the calculator only costs more than ten yuan, which is not as expensive as a battery like this.
Button battery
Button battery (button battery), also known as button battery, refers to a battery that resembles a small button. The diameter is larger and the thickness is thinner (compared to cylindrical batteries like AA batteries on the market). Button batteries are classified based on their appearance. The categories ofCorresponding batteries include cylindrical batteries, square batteries and special-shaped batteries.
This would make sense if it was a real solar panel.
Although the solar panel is small, the power consumption of the calculator is also very low.
When the weather is good, solar energy is sufficient to provide energy. When the weather is bad, it can provide auxiliary power.
Its function is therefore to supply auxiliary power and. extend battery life. After a battery failure, it can still be used in an emergency when the weather is good.
How to judge whether the solar panel is real:
Find a small screwdriver to open the back cover
Remove the battery
> Weather When the weather is bad, hold the bulb within 10 centimeters to see if it can be used normally.
If it cannot be used, pleaset the solar panel is wrong, or the wiring of the solar panel is loose or broken