1 Symptoms are due to the effects of excess acetylcholine on nicotinic and muscarinic acetylcholine receptors in the CNS, at neuromuscular junctions, and in the sympathetic, and parasympathetic nervous systems. 2  Nicotinic and muscarinic receptors have different. 3  Functions.
We're taking here about mains voltage (say 120 V or 230 V AC) power supplies with power ranging from a few Watts to several hundred Watts. Switch mode power supplies are everywhere; here are some pictures of their guts. The big high power components and small heat sinks are typical of SMPS. These devices are incredibly reliable, but being very often left powered all the time (even when their load is switched off), they still are the weak link.
Radiant heaters look hot, and they are. Radiant heaters are more of a fire hazard and burn danger than other types of heaters. They typically use less electricity and provide for more instant heat. Radiant heaters have a metal or quartz element that is heated, and use reflectors to send the heat to a specific location. Oil-filled radiators.