1. Technical Field
The present invention relates generally to a cloth-like heating element with two pairs of electrical conductors and parallel circuits which are formed via a severing process.
2. Related Art
An existing cloth-like heating element, Korean Utility Model Registration #1100067, is issued to the same applicant as the present invention, and its functions are as follows:
According to predetermined design, a great number of resistance heating wires are arranged at some intervals between individual threads which wind up on the loom's beam, while a fine copper wire and a thread are used as the weft.
Through the weaving, the resistance heating wires and the copper wires are interlaced with each other to form the heating element, thereby the cloth-like heating element with parallel structure is completed.
The above mentioned cloth-like heating element, which has the benefits induced by parallel circuitry, is only in use with very low voltages (Dc12V, 24V), because in case of increasing the number of heating wires for the purposes of enhancing durability or heat balance of the heating element, the input voltage for the heating element must be relatively decreased.
This is in accordance with Ohm's law, which states that electrical resistance is inversely proportional to the number of heating wires connected in parallel.
Therefore, the above mentioned heating element cannot function under high voltages (AC100V, 220V), which is a fatal weakness.