Abstract: An electric double layer capacitor utilizing an electric double layer formed at the interface between activated carbon electrodes and electrolyte included in polarizable electrodes, wherein the activated carbon electrodes are made from activated carbon which is produced by subjecting a synthetic resin, such as polyacrylonitrile or cellulose, to flame resisting treatment and activating treatment and which contains a Ti compound whose amount is not more than 0.2 wt % in terms of Ti.

Abstract: An electric double layer capacitor comprises a pair of insulating gaskets having through-holes which are superposed and on opposite sides of a separator, and polarizable electrodes received in the through-holes. The method comprises steps of applying adhesive to a surface region of an insulating gasket enclosing a through-hole thereof, adhering a separator sheet to the gasket by the adhesive, and cutting the separator sheet in a portion outside the inner peripheral edge of the region applied with the adhesive to enclose the through-hole, thereby to obtain a separator integrated with the gasket.

Abstract: A thermo-magnetically operated switch having two different and predetermined lower and higher operating points on a temperature scale so that it may be maintained open below the lower operating point and above the higher operating point and be maintained closed between the two different operating points comprises two permanent magnets, and two kinds of temperature sensitive ferromagnetic members in proximity to a reed switch. The two permanent magnets are disposed over respective reeds of the reed switch in a similar polar direction and with an axial space therebetween. Two temperature sensitive ferromagnetic members having a higher Curie point are disposed at opposite outer sides of both permanent magnets or at opposite ends of the reed switch, and are in contact with respective permanent magnets.