Working principle and single chip microcomputer selection of solar lawn lamp scheme development

Working principle and single chip microcomputer selection of solar lawn lamp scheme development

This paper introduces the working principle of solar lawn lamp scheme development; It is widely used in parks, communities, streets and other places. The product development and design brings the effect of energy conservation and environmental protection to people's living environment. Sunlight energy is collected during the day to charge the battery. When it reaches the rated brightness, the light is on to achieve the effect of lighting and decoration.

Solar lawn light

principle

It converts solar energy into electric energy, and then converts electric energy into thermal energy to provide each LED bead chip for luminescence. The product scheme development and design does not need the transmission of wires. Its conversion is mainly composed of solar cells, power generation equipment, inverters, light sensing devices and so on.

Structure and composition

It is composed of solar cell module, super bright LED lamp, maintenance free rechargeable battery, automatic control circuit, lamp, etc.

Solar lawn light

Circuit characteristics

1. Working voltage: 0.9 ~ 2.4V (1-2 rechargeable batteries), output current: 10mA ~ 40mA, adjustable;

2. High frequency: 85% (typ.);

3. Low starting voltage: ≤ 0.3V;

4. High stability: enable the built-in Schmidt function of the control terminal to ensure the stability of LED on and off;

5. High consistency: the working current can be adjusted in the range of 10 ~ 40mA through external resistance, and the error is within 10%;

6. It does not need photosensitive resistance and meets the export requirements of EU;

7. The frequency of PWM wave is adjustable;

8. Applicable led range: the circuit is applicable to one or two LEDs of any voltage (color), and is not sensitive to the VF value of the lamp;

Jiuqi ny8a050d model is adopted, and the packaging form is sop8.