One of my First Alert Carbon Monoxide Alarm’s expired. This gave me an opportunity to look inside and see what’s inside this little gadget. Here is a picture of the tear-down for those who are interested: First Alert - Single Station Carbon Monoxide Alarm - model #: CO614 The specification for the carbon-monoxide sensor used in this model can be found here. Here is a list of alternative carbon-monoxide sensors from Figaro.
While I was visiting Home Depot, I saw a Philips SlimStyle 60W LED bulb on clearance for two-dollars. I could not resist buying it for a tear-down to see how it’s built. I always wondered how they convert the 120VAC to a regulated DC voltage with high-current feed for lighting up those LED’s. So here is the first version of the tear-down showing you what’s inside the bulb. I will blog more about the current and voltage at the LED junction on a subsequent blog.