Dumet .Net

Thermistor Glass Metal Seal A thermistor with glass-metal seal using dumet wires as lead-in-wires with an electronic device structure with excellent corrosion resistivity suitable for an electronic device with lead wires used under the heavily corrosive environment, such as a temperature sensitive resistor for measuring the temperature of intake air in an automobile. Corrosion resistant material is used for lead-in-wires of thermistors and an exposed portion of electrodes of the thermistor and a portion surrounding a weld portion of the lead-in-wires are coated with corrosion resistant material. Since the lead-in-wires themselves are made of corrosion resistant material hence no corrosion occurs in the welding portion and a cut working portion. Further, the lead-in-wires and the exposed portion of the electrodes are also coated with corrosion resistant material. Because of this a thermistor having extremely high corrosion resistivity and high durability and reliability is prod...

The Luminous Tube An illuminating description of how neon signs operate Fundamentally, the luminous tube is a very simple device. It consists of an evacuated glass tube fitted at each end with a metal terminal called an electrode . Inside the tube is a small amount of highly purified inert gas. Connected to the two electrodes is a source of high-voltage electrical power. When the current is turned on, the tube glows with a steady, piercing light. A practical person can learn how to bend the glass, attach the electrodes, pump out the air, fill the tube with neon or some other gas, seal it, mount it, connect it to the power source, and install the completed tube. All these things can be done without knowing how or why the tube works. But what happens if the newly installed tube goes dead in two weeks, or if the fluorescent tubing starts darkening and visibility decreases? A great deal of future trouble can be saved by knowing some simple ...