Abstract: An electrostatic speaker is constituted of upper/lower electrodes, upper/lower cushion materials, and a diaphragm. Cutouts are formed in the upper/lower electrodes, upper/lower cushion materials, and diaphragm, wherein they are shifted in position such that a part of the diaphragm and a part of the lower electrode are exposed and seen through those cutouts to horizontally adjoin in the cutout of the upper electrode. The electrostatic speaker is driven via a clip having electrodes in response to audio signals, wherein drive voltages are applied to each of the upper/lower electrodes and the diaphragm.

Abstract: An electrostatic speaker is constituted of upper/lower electrodes, upper/lower cushion materials, and a diaphragm. Cutouts are formed in the upper/lower electrodes, upper/lower cushion materials, and diaphragm, wherein they are shifted in position such that a part of the diaphragm and a part of the lower electrode are exposed and seen through those cutouts to horizontally adjoin in the cutout of the upper electrode. The electrostatic speaker is driven via a clip having electrodes in response to audio signals, wherein drive voltages are applied to each of the upper/lower electrodes and the diaphragm.

Abstract: A trialkylamine derivative represented by the formula (1) or a pharmaceutically acceptable salt thereof: ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different from each other and each represents lower alkyl;R.sup.3, R.sup.4 and R.sup.5 may be the same or different from one another and each represents hydrogen, lower alkyl, lower alkoxy, lower alkoxycarbonyl or halogen;R.sup.6 and R.sup.7 may be the same or different from each other and each represents hydrogen or lower alkyl;R.sup.8 represents hydrogen, lower alkyl, lower alkoxy or halogen;X represents oxygen, sulfur, --CH.dbd.N-- or --CH.dbd.CH--;Y represents oxygen, sulfur, methylene, N--R.sup.11 (wherein R.sup.11 represents lower alkyl), SO or SO.sub.2 ;Z represents --OCO(CH.sub.2).sub.p .about. or --OCH.sub.2 (CH.sub.2).sub.p .about. (wherein p represents a number of 0 to 4 and symbol .about.

Abstract: A portable facsimile equipment having a plurality of power source connecting portions adapted to be selectively connected to plural kinds of power sources. The facsimile equipment is operable in correspondence with the kind of power source connected thereto. A power source kind detector detects the kind of power source connected. A communication mode storing device stores a communication mode corresponding to the power source connected. A communication mode selecting device accesses the communication mode stored in the communication mode storing device according to a signal from the power source kind detector to automatically set the communication mode. A compact battery can be detachably fixed as one of the power sources. An AC power source can be detachably fixed as one of the power sources. A DC power source can also be detachably fixed as one of the power sources.