Abstract: A D.C. potential multiplier has a first capacitor which is time shared between two potential multiplying circuits. In the first multiplying circuit, gates connect the first capacitor for charging from a potential source. The gates then switch the capacitor into potential adding series with the source for charging a second capacitor toward the combined potential of the source and first capacitor. The gates next switch the first capacitor into the second multiplying circuit for charging the first capacitor from the second. The gates then switch the first and second capacitor into potential adding series for providing an output potential from the second potential multiplying circuit.

Abstract: A pushbutton switch for electronic devices such as watches includes a housing provided with a cavity. A first electrically conducting contact member is mounted within the cavity on an electrically insulating portion of the housing. A diaphragm extends across and seals the cavity. A second resilient electrically conducting contact member is mounted between the first contact member and the diaphragm on an electrically conducting portion of the housing. The first contact member extends through the electrically insulating portion of the housing for forming one terminal of the switch while the electrically conducting portion of the housing forms the other terminal. Depressing the diaphragm deflects the second contact member into contact with the first contact member for electrically connecting the terminals to close the switch.