Circuit

Description of Circuit

LRS-50-24 Power Supply converting AC wall power to 24VDC 2a

LM317 voltage regulator to create 12V line for 555 timer

555 timer running in astable mode to turn on and off signal to the LED strip

N-Channel MOSFET to send signal to the LED strip

24V COB LED Strip that runs at 24V 1a

Important Notes

Between the power supply and 24v line, my setup has a 2a fuse and a power switch, unnecessary but nice

My setup for LM317 ends up converting to 13V because I only had those resistors on hand, the attached image below has a correct equation, ideally you should use something like 220 for R1 and 1.9k for R2

The potentiometer does not have to be 10k, I believe a 50k will not change the function of the circuit

The 0.01uF capacitor decides the clock of the circuit along with its resistors, I ended up with a 6.6khz frequency as the sound produced was the least irritating with what I had on hand, however you could increase the frequency beyond 20k to not be hearable at all

• Meanwell LRS-50-24 (1866-3354-ND)

• NE555P (296-NE555P-ND)

• Mosfet IRLZ44NPBF (IRLZ44NPBF-ND)

• LM317TG (LM317TGOS-ND)

• Potentiometer PS45-21PC3BR10K (987-1409-ND)

• Diode 1N4148 (1N4148FS-ND) x 2

• Resistors (22Ω, 220Ω, 1.9kΩ, 330Ω)

• Capacitors (1μF, 0.1μF, 0.01μF)

• 24V 1a COB LED Strip

• 2A Inline Screw Fuse

• Power Switch