Traditional Culture Encyclopedia - Traditional stories - Is it possible to change the power supply of a small 220V stereo (speakers 4V 3W) to a DC power supply (i.e. with batteries)?
Is it possible to change the power supply of a small 220V stereo (speakers 4V 3W) to a DC power supply (i.e. with batteries)?
There is no problem at all to change to DC power supply;
The key is that the maximum working current of 4V/3W is 800mA, and it costs a lot if it is powered by three 1.5V dry batteries;
If it is powered by three to four 1.2V rechargeable batteries, then the cost of using them will be greatly reduced, but the key is that it needs to be equipped with a charger with a charging current of 50-80mA;
There is another way, that is, the use of abandoned cell phone batteries (3.6V), and then equipped with a cell phone charger, charging the battery, can be used continuously much longer than ordinary rechargeable batteries, and the use of the life of the longer.
- Previous article:What is the origin of the Midwinter Festival? What are the allusions?
- Next article:Reflections on seeking Confucianism for 3000 years
- Related articles
- How to cancel the alarm clock of electronic watch
- How do you spell the small particle building blocks of the moon boat?
- How to make paper with wheat straw
- Characteristics of Ancient Greek Scientific Thought
- What are the games similar to eat chicken
- Where does aump come from?
- 1 Why is Store Lonely?
- Extinct plants
- What does it mean to "feel inferior if you climb high, and feel inferior if you go far" in the augmented sage's article?
- Get these projects, the return home to start a business is easy to earn tens of thousands of dollars a month