Microchip makes a smoke-detector ICs with alarm memory
The vivacious Michelle Ragsdale from Microchip sent me a press release about their new RE46C162/3 (ion type) and RE46C165/6/7/8 (photo type) smoke detector ICs. The cool thing is that they used a process that can put memory in the chips so that you can see which detector has trigger and alarm in a multi-detector loop. Michelle knows I just love block diagrams so she sent this one along.
I have always been interest in smoke detector ICs since I learned that Robert L. Chao, the president of Advanced Linear Devices (ALD) designed smoke detector ICs when he was a Supertex, another cool analog outfit. That was where Robert got so smart about making high-input-impedance comparators and op amps, and it also helped him design energy harvesting modules that have the same low quiescent current requirements along with the need for ALD’s zero-threshold FET technology.
kartik shukla commented:
How to simulate smoke-detectors is system in
class II zone a hydrocarbon area.
Andy T commented:
No anger - just hate to see attempts at censorship from the readers who work in Chinese Government.
Testla commented:
"I agree - "THAT OLD HAG" sounds more engineer-originated, which is why gb5rj can never get a date."
Hmm, anger problems? Projection?
Andy T commented:
"gb5rj commented: Please don't use the word vivacious."
I agree - "THAT OLD HAG" sounds more engineer-originated, which is why gb5rj can never get a date.
working...NOT commented:
...H_1_B's still flowin' in like BP oil and so many Americans can't find work.
workingNOT commented:
...how about blogging about why H1B's continue to flow in when so many Americans can't find work?
William Ketel commented:
Smoke detectors that were able to report their identity with a code, in loop systems, were around in the mid 1980s. Of course, they used a lot more components, and the installer needed to set the address with jumpers, at installation, but they worked well. They did cost more than $2.00, and each buss was proprietary to a given system vendor, but they were still able to deliver the same functionality. And because they used a wired and supervised network, they were quite reliable as a system.
So it seems that the big deal here is making it a whole lot cheaper, not that it is much better, or some breakthrough, but that the new product is a lot less expensive. This means that the profit goes up, and the selling price stays the same, I would guess.
gb5rj commented:
Please don't use the word vivacious.
