Simple solar radio battery charger
This is the simple solar solar radio battery charger circuit. A solar cell radio used a 3V (or two 1.2V) Ni-Cad battery in it. The battery can not be removed. It use a mini jack socket for charging. Its quiet difficult to find such a voltage charger. Here is the …
Automatic OFF 12V Battery Charger by power SCR
This stop current give battery, when Voltage of battery tall arrive at the level that load with full speed already ahead for protect something charger too much poor distilled dry water. This circuit can is usable very wide can use with battery many model. By choose diode and SCR at …
DIY Super Bright LED USB Laptop Light.
Now I’m very busy because During this semester’s new son and charge new school. So It must be very adaptable. Sleep faster. And Youngest daughter began to grow and frequently wake up at night to milk. I have to take the laptop to work on the bed always. But the …
Mini car inverter 60watts using CD4047 and BD249
The 12 volts of Car battery and converted to AC 220V 60 watt. Then apply to appliances easily. And portability easy with Because of the small. In circuit we use CD4047 and BD249 as main part so is mini circuit. The working principle. When we connect the 12 volts in …
install ffmpeg ubuntu 14.04
Hi, friends I borrowed space on the blog, to record remember protection. About installation FFMPEG for Ubuntu 14.04 I can not install it with Ubuntu software center. So have to exert use little terminal. then type: sudo apt-add-repository ppa:jon-severinsson/ffmpeg sudo apt-get update sudo apt-get install ffmpeg and wait….. Eventually usable, …