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Solar energy is renewable, free, widely available and clean form of energy.It is considered as a serious source of energy for many years because of the vast amounts of energy that is made freely available, if harnessed by modern technology.In this project, we are building a power bank which harvests energy by using a solar panel.With good antena expected transmission coverage is at least 15Km.It uses high power 175 MHZ 4A 25W 2SC1972 RF transistor that must to be mounted to heatsink for proper heat dissipation.
When sunlight hits the cells, it knocks electrons loose from their atoms.As the electrons flow through the cell, they generate electricity.Many people are familiar with so-called photovoltaic cells, or solar panels, found on things like spacecraft, rooftops, and handheld calculators.The cells are made of semiconductor materials like those found in computer chips.The above FM transmitter has RF output power of 300 m W and covers more than one kilometer distance.
Frequency adjustment is accomplished with MV2105 varactor diode and R7 10K potentiometer. High performance low noise 500m W amplifier / booster for all low power FM transmitters such as BA1404, BH1417, BH1415, 433MHz transmitter modules, etc.