Solar Led Lawn Lighting Voltage 3.7V/1W Circuit
Apr 25, 2022
Solar led lawn lighting voltage 3.7V/1W circuit
Component Selection: BT1 selected 3.8V / 80MA solar panel, single crystal silicon is good, polysilicon; BT2 uses two 1.2V / 600mA Ni-CD batteries, if you need to increase the hair loss or extension time, it can improve Solar panel and battery power.
The β of VQ2, VQ3, and VQ5 is about 200, and the VQ4 requires a large transistor. VD1 is used as much as possible, such as a tube or a Schottky diode. LEDs can be used in white, blue, green ultra-high brightness. When the low-pressure LED such as red orange is elected, the solar led lighting circuit needs to be reset.R3, R5 recommends the use of a 1% precision resistance; R4 is lighted with 10kΩ ~ 20kΩ, the dark resistance is 1 MΩ or more. Other resistors can be used for ordinary carbon films (1/4) W, (1/8) W resistance. L1 uses (1/4) W color inductance, the DC impedance should be small.
