Battery Powered Led Night Light Circuit

Current drawing is less than 500µa.

Battery powered led night light circuit.

You can use 6v 4ah sla battery this will get charged during day time though the solar panel power and during night time this battery acts as power source for leds. The cmos timer ic ts555cn is wired as a square wave generator operating at around 5hz the output voltage from the ic1 is doubled using the combination of capacitor c2 and diode d2 in order to drive the led. The led can be a bright white led. 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.

In order to ensure minimum battery consumption one 1 5v cell is used and a simple voltage doubler drives a pulsating ultra bright led. Circuit diagram of solar garden light. Simple 1 2v aa battery solar charger circuit. First the 12v flows through vr1 potentiometer to ldr1 photoresistor and r1.

Thus was born the idea to create the outdoor solar lights circuits. Second an led1 will glow brightly. The charging power from the 12v solar cell to the battery. 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.

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. Or when ldr1 gets that no light or night. 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.

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. 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. I m not sure how it works. Simple night light sensor circuit.

It saves electricity costs. We happen to have the 12v battery led lamps and solar cell. 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. We use the 12v 2 5ah battery and the led lamp 12v 3w.

The ldr placed in this circuit drives led as off during day time and on. Next we will design a simplified night light sensor as figure 3. These additional features greatly enhance the flexibility of this part and allow the implementation of more sophisticated applications. The led lamp will light up the night itself and closed at lunchtime.

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.