Any ideas ?
I am looking to keep EPs warm for my cold damp winter nights
EPs are always cased when not in use. Case arrangement is foam pockets to hold most EPs vertical, top up.
Ideally would like some kind of mat heater in bottom of case below the foam, something like a small heating pad.
Battery power will be small 1S or 2S LiPo, so could easily fit inside case
Wondering if a small 120V heat pad might work, generating a very low heat on a low voltage DC source
Something like 250W @120Vac to 7.2Vdc or 3.6Vdc: 250:120=x:3.6 =7.5Wx1.414 =10.6W
Havent looked at pad wattage or sizes so this is just a guess right now. If I can find a pad that (ideally) fits in my EP case I might give this a go.
Anyone done something like this?. I can add a little PWM ckt to control current, but would like to find a match between pad R and battery V so just a switch would be the only other thing in the ckt.
Edited by Bob4BVM, 15 December 2019 - 06:28 PM.