Abstract: A first capacitive circuit is coupled to an output of a low drop-out (LDO) regulator. A second capacitive circuit is selectively coupled to a power supply signal circuit and arranged to store charge when the LDO regulator is deactivated. When the LDO regulator is activated, a portion of the charge on the second capacitive circuit is transferred to the first capacitive circuit. The LDO regulator provides an output when the charge associated with the first capacitive circuit reaches a predetermined level. The power-on time of the LDO regulator depends on the time required to increase the charges of the first capacitance circuit to the predetermined level from a level associated with the transferred charge from the second capacitive circuit. Also, the presence of the first capacitive circuit prevents noise associated with the power supply from being reflected at the output of the LDO regulator.

Abstract: A lubricating device in a pneumatic tool or the like, which device is tool mounted beyond an on-off or throttle valve and utilizes air pressure from within the tool to achieve a metering flow of stored lubricant. The device is installed for convenient servicing and includes a lubricant storage tank, a lubricant outlet, a wick means and an intermediate "ready" chamber. The latter receives lubricant from the storage tank and is pressurized in an open position of the throttle valve to induce a movement of lubricant through the wick means for exposure to flowing pressure fluid. Valving means are operative to control access of air from the ready chamber to the storage tank.