Study of LED Grow Light Driver Circuit for Indoor Strawberry Cultures: A Class Experiment

S. Sungwiset (University of Technology Thonburi)
T. Janprung (University of Technology Thonburi)
T. Pechsiri (University of Technology Thonburi)
S. Puengsungewan (University of Technology Thonburi)

ASEAN Journal of Science and Engineering Education (AJSEE)
Vol 1, No 1 (2021): AJSEE: March 2021

This journal presents the study of the led driver circuits for strawberry LED grow light. There are three driver circuits: A linear resistor circuit, a simple transistor circuit, and a boost converter circuit. Boost converter circuits are more efficient than direct drives and transistor drives. Because the circuit can be controlled from a 40 kHz PMW signal that gives a more constant value and circuit stability. There is also less load in the circuit, making less loss in the circuit with a high-efficiency value. When the voltage used is 12 volts, we got a value of Photosynthetic Photon Flux Density (PPFD) of 230 μmol/m2/s. This circuit has very high efficiency (98%). The boost converter is suitable for driving LED bulbs for strawberry planting.