While searching for a 9V DC power supply for my project, I see that many recommend external components. For example, see this pair on Amazon. Here's the recommended circuit:
I understand that the components are for ripple, interference, and circuit protection. But before I start integrating this into my design, I was hoping to find a "ready made" supply, without breaking the bank. Any recommendations? If not, I will have several follow-up questions about the external components.
The project is for 20 white LEDs on bunk bed stairs with a PIR motion sensor. The LEDs will be wired as 10 parallel circuits with two LEDs in series for each circuit. A resister will be added to each of the 10 circuits to dimly light the LEDs. I expect the current draw to be under 500mA.
Thanks in advance. It's been about 35 years since I've played with this stuff.
I understand that the components are for ripple, interference, and circuit protection. But before I start integrating this into my design, I was hoping to find a "ready made" supply, without breaking the bank. Any recommendations? If not, I will have several follow-up questions about the external components.
The project is for 20 white LEDs on bunk bed stairs with a PIR motion sensor. The LEDs will be wired as 10 parallel circuits with two LEDs in series for each circuit. A resister will be added to each of the 10 circuits to dimly light the LEDs. I expect the current draw to be under 500mA.
Thanks in advance. It's been about 35 years since I've played with this stuff.