Induction coil heater - Tankless water heaters consumer reports.
Induction Coil Heater
A coil for generating intermittent high voltage from a direct current
a coil for producing a high voltage from a low-voltage source
An induction coil or "spark coil" (archaically known as a Ruhmkorff coil after Heinrich Ruhmkorff) is a type of disruptive discharge coil. It is a type of electrical transformer used to produce high-voltage pulses from a low-voltage direct current (DC) supply.
A transformer for producing high voltage pulses in the secondary winding, obtained from interrupted direct current in the primary, as for a gas engine.
A conductor used for indirect heating of the cathode of a thermionic tube
fastball: (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke"
A person or thing that heats, in particular a device for warming the air or water
A fastball
A heater is object that emits heat or causes another body to achieve a higher temperature. In a household or domestic setting, heaters are usually appliances whose purpose is to generate heating (i.e. warmth). Heaters exists for all states of matter, including solids, liquids and gases.
device that heats water or supplies warmth to a room
large induction coil
Induction coils were ogten called 'philosophical apparatus' back in the late 1800's . This one is producing a 5" spark
Induction coil at Bristol Dorkbot
Induction coil made by Colin Low, out of a Lucas car ignition coil and a 12V sealed lead-acid battery.