11 discussions on ElectronDepot about the National Semiconductor LM35: what owners asked, what went wrong, and what fixed it.
I am looking for a zero crossing detector IC for use with 120/240,50/60 Hz mains voltage and has an optical isolated output that iscompatible with micro controllers. I have seen zero crossing triacdrivers with an optical isolated input,...
Hi all, this is mostly a continuation of CD's solar battery charger thread. I was thinking of using a power zener as a shunt reference... but this has some problems. I think #1 is that as the zener sucks up the power it will warm and go...
Hi all, We are using a diode connected transistor (TIP32C) as atemperature sensor. 77K to 400K. We bought a whole bunch with thesame production code. I measured the room temperature forward voltagedrop and then selected three...
Hi. I need suggestion regarding buy of analog sensor. Unfortunately , the sensor has to be analog and it has to output some voltage range. Ideal range would be between 0 - 24V. If it's lower range we can use some operation amplifier. Did...
I know this topic has been discussed previously but I wondered ifanyone had personal experience of an application similar to mine.I wish to monitor the air temperature (-5 to +30 deg C) at variouspoints in a void below the office floor. The...
What am I looking for? I don't even know what to call it. But it would sensetemperature (or light or sound level or electrical current or ... ) andinput data (through serial or USB ports?) for capture into a database.Presumably I would...