Hi, I'm controlling 24v rated light bulb with a microcontroller but it seems like sometimes it doesn't light. I tried resetting the circuit then it worked again. Then after a while the bulb again dies. Everything works again after random times of resetting the circuit and the process goes on. I am using PIC18F4620.
This is my schematic:
Do i need protection diode for this one? I am using TIP120.
I am flashing 20 bulbs with 20 transistors. I am using different patterns to create sequences.
Edit:
I am trying two bulbs here only. They are rated 24v 300mA. My power supply is 24Vdc 2A. When I am replacing the bulbs with leds, the circuit works properly.
thanks,
This is my schematic:
Do i need protection diode for this one? I am using TIP120.
I am flashing 20 bulbs with 20 transistors. I am using different patterns to create sequences.
Edit:
I am trying two bulbs here only. They are rated 24v 300mA. My power supply is 24Vdc 2A. When I am replacing the bulbs with leds, the circuit works properly.
thanks,
Last edited: