Abstract: A mobile radio communication apparatus powered by a limited-capacity power supply includes a transmission amplifier producing a transmission output in accordance with command data from a base station. The driving voltage for the amplifier from the power supply may change due to the lapse of time. A memory stores control data for maintaining a desired operation of the amplifier with the dissipation current thereof minimized when the power supply voltage changes. The driving range of the amplifier is controlled in accordance with the stored control data.

Abstract: An anti-stall device for an internal combustion engine provided with a fuel injection pump having a fuel control rack and a governor mechanism connected to the fuel control rack and which has a speed control lever, comprising:a circuit for generating a dc voltage in proportion to the rotational speed of the engine;a circuit for comparing and amplifying an output voltage of the dc voltage generating circuit and a reference voltage corresponding to the idling speed of the engine;a timer circuit for receiving outputs of the comparing and amplifying circuit as inputs to generate outputs for a predetermined period of time; andan electromagnetic actuator for utilizing the outputs of the timer circuit to drive said fuel control rack in a fuel quantity increasing direction.