We all know that LED lights are made up of many LED beads. So what is the internal circuit design of these LED lights? Let me introduce you to the advantages and disadvantages of the three common circuit designs.
1. Series circuit
Compared with the driving current of the LED, the advantage of the series circuit is that the current is stable.
The drawback is that if one of the LEDs is damaged, all LEDs will not illuminate, but will not affect the lifetime of the other LED.
2. Parallel circuit
The advantage of parallel circuits is that the failure of an LED will not affect the application of other LEDs.
The drawback is that if no current limiting resistor is added, any LED will be damaged, the current across the others LED will increase, and the other LED will be burned.
And because the driving voltage of a single LED is very low, most of the voltage will be formed to do useless work, which is also a waste of money.
3. Series-parallel circuit
The series-parallel circuit is a general-purpose circuit for LED plant growth lamps.
Because multiple LEDs are selected in series to form a group, then parallel with the other groups. It maximizes the utilization of the power supply voltage and reduces useless power loss.
Selecting several LEDs in series ensures that the driving current of these LEDs is universal, which is beneficial to stabilize the current of the LEDs and thus ensure the service life of the LEDs.
After the LED plant growth lamp groups are connected in series, they are connected in parallel with other groups to ensure that one group is damaged without affecting the normal application of other groups.
Since each group has a finite current resistance, the lifetime of the other group is not affected by a group of damage.