Hello everybody. The prices for drivers for LEDs have risen, we are learning to make them yourself. I ordered microcircuits to power a three-gated LED.
There is also one per centimeter. The board is double-sided, for a different type of microcircuit, one side must be cleaned so that something does not short circuit.
The circuit itself, it is very simple, starts working from 6V, you can supply 30V as much as possible.
Parts from the old computer power supply will last for a long time.
Soldering takes 30 minutes. We connect the LED and power.
The brightness of the LEDs is adjusted using an external PWM signal with an output voltage of 0.5 to 2.5 V and a regulation frequency of 100 Hz to 20 kHz. The signal is fed to the DIM input of the PT4115 chip. If the voltage of the PWM signal is more than 2.5 V, then the output current of the driver will be constant and will not increase.
Thank you all for your attention.