1. The smaller the fill factor, the less area occupied by the wire, and the coil resistance will be reduced, thereby reducing the current impedance.
2. Fill factor is also related to factors such as temperature, light intensity and battery impedance. The higher the temperature, the smaller the output voltage and fill factor; the higher the light intensity, the higher the output voltage of the solar cells and the higher the fill factor.
How come the 2.5mm solar panel only produces 5 volts of electricity?
When there is sunshine during the day, BT1 converts light energy into electrical energy, and D1 When BT2 is charging, due to light, the photoresistor has low resistance, and Q4?b is at an extremely low level and is cut off.
When there is no light at night, the photosensitive resistor has high resistance, Q4 is on, Q2?b is also on at an extremely low level and the DC consisting of Q3 , Q5, C2, R6 and L1 The boost circuit works and the LED is powered and emits the light.
DC boost circuit
The core is a complementary tube oscillation circuit. Its working process is as follows: when Q2 is turned on, the power supplies charge C2 through L1, R6 and Q4. C2 The terminal voltage cannot change suddenly, Q3 b is extremely high level, Q3 is not conducting and as C2 is charged its voltage drop becomes higher and higher and the potential of Q3 b decreases more and more.
When Q3 turns on a voltage as low as Q3, Q3 turns on, Q5 turns on one after the other, and C2 passes through the Q5 junction? ce, the power supply, the junction Q3 ?eb (since Q2 is on, we assume that its junction ec is short-circuited, Q3? The pole e discharges directly from the positive pole of the power supply.
The circuit is blocked. The electricity emitted by the 2.5mm solar panel is only 5V because the circuit is blocked, because normally the voltage of a cell will be 0.5V. If it is only 0, 2V, this must be due to an open circuit on the board. If there are wires, you can measure the impedance of the wires. The testing method involves opening the battery case and directly measuring the voltage and current from the terminal blocks taken from the battery panel.