Thermostat High Frequency Noise?

Alright, so this doesn't have much to do with herps, but more about my dog. Here me out!
since it's about a thermostat i though 'hey, maybe i can post it here'. sorry tho, and i dont mind getting my thread moved. i guess

ANYWAYS

So I have the Exo Terra 600w dimming and pulse proportion thermostat. It's pretty good and the better option to my original idea to get an On/Off cheaper thermostat.

Now, like a lot of dimming devices have, (like lamps etc), they tend to make a sound when dimming. And since my thermostat is not constantly on max power, it makes a high pitched very quiet sound.
If the therm is on max power there's no sound, and when it's off (not plugged out, its still on but theres no power going to the heat source) , there's no sound either. It's only this dimming sound.

Now here's my problem.

I have a very sensitive and delicate doggo, and my snake tank is in my room. at night, if my dog sleeps in my room, he starts to shake and pant and is very restless and wont sleep unless i have endless dog calming music on.

He always sleeps in my room no problem, but ever since I got the thermostat, and tested it out (before I got my snake) he refused to sleep. and my nr1 suspicion is the thermostat's sound.
He sleeps fine in my parent's room, and he wants to leave mine.

this isnt such a big deal for me (i just miss the cuddles cri).

has anyone else experienced this? and is there a solution besides letting him sleep in the other room. I'm fine with it, I guess. the last 2 nights he slept in my room, after I calmed him down with some music, but today when i turned the music off, after a while he got up again.

Have you tried switching it to pulse mode? I believe t-stats can 'hum' if used on metal racks or stuff if set to dimming mode. Otherwise, i would just return it and get a replacement. Maybe the one you have is faulty?

Maybe it's somehow related to this .

I've noticed over the years a kinda vibrating sensation when touching certain heat-mats with my hand .

Similar sensation to when you touch certain dimmer light switches...

Someone may know ...


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Hi, I have a dimming Habistat thermostat ( Europe. UK) and it alao makes this noise. As far as I Studied this, it is made like this and nothing you can do. Or if you can, share it with me please. It is not a fault it is a feature of construction unfortunately.

As kerol stated it is simply a limitation in the construction of these devices. Unfortunately living outside North America, your choices for thermostats are limited to the exo terra or habistats currently and that means unfortunately dealing with it. You can try switching to pulse to see if the whine or buzz goes away and if it does it may mean the dimming functionality is not built adequately to handle the voltage resistance properly.

It could be caused by capcitors or coil whine due to poorly made components.

To give something similar, I had a computer monitor that failed to turn on. It turned out the capacitors the manufacture used were from china and not japan. As such they had a tendency to whine and bulge and thus fail. They did and I had to buy a kit of replacement japanese capacitors and replace the defective ones. After that the monitor now works but when the screen goes into power save there is a coil whine until it goes into low power mode. Nothing I can do about it as it is the power supply but it does not effect the monitor and is not a problem aside form the slight sound.

I think the exo terra is the same problem and while I doubt it means it will fail soon, it is simply something you have to deal with. You unfortunately do not have alternative to purchase except maybe one of habistat's higher end thermostats.

Here are some links describing what you might be hearing

http://www.ukgamingcomputers.co.uk/c...ined-a-63.html

http://www.sprags.com/