Battery Powered Led Night Light Circuit

This circuit is usable as a night lamp when a wall mains socket is not available to plug in an ever running small neon lamp device.

Battery powered led night light circuit.

Some led drivers incorporate a voltage multiplier or voltage booster in the led driver circuit since 1 2 volts is insufficient to power the ultra bright leds. This is the circuit of a low power led night lamp that will automatically switch off at day time. It saves electricity costs. Thus was born the idea to create the outdoor solar lights circuits.

Simple night light sensor circuit. The ldr placed in this circuit drives led as off during day time and on. We use the 12v 2 5ah battery and the led lamp 12v 3w. In order to ensure minimum battery consumption one 1 5v cell is used and a simple voltage doubler drives a pulsating ultra bright led.

We happen to have the 12v battery led lamps and solar cell. Current drawing is less than 500µa. The led lamp will light up the night itself and closed at lunchtime. Simple 1 2v aa battery solar charger circuit.

The complete working of the project can also be found in the video linked below where we demonstrate of the light turns on automatically if the panel receives no radiation. First the 12v flows through vr1 potentiometer to ldr1 photoresistor and r1. I m not sure how it works. Or when ldr1 gets that no light or night.

Circuit diagram of solar garden light. I m making a 12 8v battery powered 4 led in series solar light at about 250 ma the leds require only about 2 8v each and can handle over an amp i just want to know if the transistor can handle 18v or so from the panel at very small current. Circuit diagram of battery powered night lamp using an old led bulb ic1 is in a 16 pin dual inline package that allows reference and a non inverting input of the comparator to be pinned out. Second an led1 will glow brightly.

The led can be a bright white led. This circuit requires only a single ni cd rechargeable battery to light up the white led for more than five hours depending upon the ampere hour ah capacity of the battery. The charging power from the 12v solar cell to the battery. During night time when the solar panel receives no radiation there will be no output current from the panel and hence the battery will stop charging and the led lights will turn on.

Next we will design a simplified night light sensor as figure 3. Automatic solar powered led light can be used for garden outdoor farm etc this circuit constructed with 6v solar panel and 12 high bright white leds. When sunlight falls on the solar cell during daytime the solar cell charges the rechargeable battery and turns led1 off. These additional features greatly enhance the flexibility of this part and allow the implementation of more sophisticated applications.

Now to get started adding solar power to your small electronics projects and use the sun to power your battery powered night lights garden lights and other automated decorations or projects.