Low DC voltage and/or AC voltage powered machine for preparing espresso coffee or other infused beverages, and of compact and stationary type or transportable on different positions and places, adapted to be installed into means for inhabited uses, campers, caravans, motor-homes, different kinds of boats, commercial and industrial vehicles such as for example motor-bus, motor coaches, trains, airplanes, trucks, motor-vehicles for private or public use, for domestic or public uses, catering, vending, and other applications, the machine being arranged for preparing coffee and several kinds of infused beverages, such as for example white coffee, barley, tea, camomile, liquid foods etc.., by utilizing the loose powder of such beverages or the waffles or the capsules containing such powder, metered and pressed in the best way, and constituted by a box-like shaped cabinet with reduced and compact dimensions, having a limited height and width and depth smaller than those of the height, which cabinet is composed of various profiled parts which are joined removably to each other in a per se known manner, and adapted to house at least a filtering and infusion unit for the preparation of the respective desired infused beverage and for the distribution of the prepared infused beverage, a removable cup support adapted to support the cup or the glass where the beverage distributed by the unit is poured, a regulating handle, co-operating with the filtering and infusion unit for moving a part thereof, same, and a water circulation circuit communicating with water containing means for preparing the beverages, pumping means, water heating means (63, 64) co-operating with heat exchanger means, and control means (4, 17, 18) for controlling the various operative cycles of the machine and for turning on and off the same machine, characterized by a metallic of other material box-like shaped structure, formed by an upper flat plate, and by another lower flat plate, spaced away vertically from the plate and joined with the same by means of joining means (bars 50, 51) and sprung means (54, 55), adapted to maintain said upper plate always lifted up from said lower plate, said plates (25, 26) being enclosed by the peripheral walls of the box-like shaped cabinet, a further metallic flat plate being secured on said upper plate, constituting said heat exchanger means, support means (32,33) being arranged onto the upper surface of said further flat plate, in which a correspondent horizontal pivot is inserted and supported, which is passing through a correspondent axial through hole of a metallic rectilinear arm, the other end portion of which is joined with a lengthened arm of said regulating handle, which lengthened arm is joined with an additional lengthened cylindrical arm provided with a handgrip, said lengthened arm being housed on and supported by correspondent support means (40, 41), secured to the lower part of a metallic load bearing structure, constituted also by two vertical portions (44, 45) bent for forming two horizontal projections (46, 47), provided with a respective vertical through hole (48, 49), said load bearing structure being able to be raised and lowered; characterized in that said filtering and infusion unit is constituted by a stationary lower part, and by a movable upper part (14, 15) co-operating to each other, said stationary lower part being adapted to receive the waffle support filter, or the support for the loose ground substance for the infusion, or an appropriate waffle supporting cup; and characterized in that said water heating means comprise at least a low DC voltage powered electric heating element and at least a further AC voltage (127 or 230 V) powered heating elements, and that valve means are provided for deviating the water flow into the circulation circuit, and thermostatic means (68, 69) are provided for regulating the heating temperature of said heating elements (63, 64), the machine being arranged in such a way that in each infusion cycle into said filtering and infusion unit it is at first loaded the relative substance for preparing the infused beverage, then said regulating handle is pushed in the inclined position thereof and displaced downward, with the consequent compression downward of said upper plates (25, 27), against the action of said elastic means (54, 55), until said movable upper part (14, 15) comes into contact with said stationary lower part, and in this position the infusion cycle is started, during that said regulating handle is always kept in this lowered position, up to the end of the infusion and the delivery of the beverage on the established doses, and such regulating handle is then released and returns itself automatically, with a raising movement reverse than the previous one, to the starting raised position thereof, thanks to the upward push exerted by said elastic means (54, 55) on to said upper plate, so that the exhausted waffle of the just prepared beverage may be removed from the component parts of said filtering and infusion unit, thereby arranging the machine for carrying out a further infusion cycle.