Abstract: A portable power generating system can be operated by using a portable pressure canister containing a liquefied butane fuel gas. In the power generating system, a part of the butane gas contained in the pressure canister is used as a fuel gas and reminder of the butane gas is used to prepare a reformed gas containing hydrogen gas by reaction with water. The hydrogen gas in the reformed gas and oxygen gas in air are used in a fuel cell to generate electric power. The power generating system is characterized in a compact portable one which further comprises a device for regulating the amount of the butane gas discharged from said pressure canister and a device for controlling a flow rate of the butane gas, installed in feed lines of supplying the butane gas from said pressure canister to said reforming device.

Abstract: A voice message storage device receives, stores and plays back voice messages transmitted on a telephone line. The device includes a first analog recording tape unit associated with a first identification signal and a first password, and a second analog recording tape unit associated with a second identification and a second password. An identification signal detecting unit is provided for detecting dial pulses or DTMF signals, denoting the identification signal and password for accessing the first or second analog recording tape unit.