Having a single solid core, this wire will retain a formed shape.
Also ideal for use in conjunction with breadboards for prototyping.
Overall diameter is 1.2mm (16AWG), rated at 1.8A, 1kV.
Tech Tin Files: Wollaston Wire
Wollaston wire is a very fine (less than .01 mm thick) platinum wire clad in silver and used
in electrical instruments. For most uses, the silver cladding is etched away by acid to
expose the platinum core.
The wire is named after its inventor, William Hyde Wollaston, who first produced it in England
in the early 19th century. Platinum wire is drawn through successively smaller dies
until it is about .003 inches (0.076 mm, 40 AWG) in diameter. It is then embedded in the
middle of a silver wire having a diameter of about 0.1 inches (2.5 mm, 10 AWG). This
composite wire is then drawn until the silver wire has a diameter of about .002 inches
(0.051 mm, 44 AWG), causing the embedded platinum wire to be reduced by the same 50:1
ratio to a final diameter of .00006 inches (1.5 Ám, 74 AWG). Removal of the silver
coating with an acid bath leaves the fine platinum wire as a product of the process.
Wollaston wire was used in early radio detectors known as electrolytic detectors
and the hot wire barretter. Other uses include suspension of delicate devices, sensing of
temperature, and sensitive electrical power measurements.
It continues to be used for the fastest-responding hot-wire anemometers.