Abstract: A power supply system for an electronic device having a battery power source, a logic circuit, a voltage dropping circuit which drops the voltage of the battery power source to produce a dropped voltage, and a load circuit to drop the output voltage of the battery power source comprises a voltage switch circuit for supplying selectively the output voltage from the power source and the dropped voltage from the voltage dropping circuit to the logic circuit as a drive voltage. In the system, the logic circuit is usually operated by the output voltage from the dropping voltage circuit. When the load circuit operates, it is operated by the output voltage from the battery power source.

Abstract: A capacitor ratio multiplier has a switched capacitor for switching between sampling, sharing and delivering charge modes. During the sampling mode, the switched capacitor receives charge from a port in a circuit. During th sharing mode, the switched capacitor is paralleled by a sharing capacitor and is partially discharged thereby. The switched capacitor is connected to a port in the circuit for delivering charge. The sharing capacitor is discharged prior to sharing charge with the switched capacitor.

Abstract: Automotive air conditioning apparatus for generating air anions in the passenger compartments of motor vehicles is disclosed. The disclosed apparatus includes a voltage converter for converting the ignition voltage of the vehicle engine to a lower voltage suitable for operating an air anion generator located in the passenger compartment of the vehicle. The voltage converter includes a voltage reducer, such as a resistive voltage divider or an autotransformer, a rectifier, a fuse, and a current limiting resistor.

Abstract: This invention provides a voltage dropping circuit which is composed of capacitors and MOS field effect electronic switching elements whereby a voltage equal to M/N of the voltage of a power source is obtained.

Abstract: A charge-transfer voltage converter transforms a high voltage to a lower value without the use of a conventional transformer. Two capacitors are connected together to form an electrical circuit. The circuit is then broken in one place and a switch is inserted to form a continuous circuit. One of the two capacitors is charged to a high voltage. The switch is turned on and off rapidly and this transfers a charge from the charged capacitor to one which was initially uncharged. By controlling the duty cycle and/or repetition rate of the switch between the two capacitors, the output voltage of the capacitor which was initially uncharged can be maintained between the limits of zero volts and the value to which the supplying capacitor was initially charged. Thus, voltage transformation has been achieved without the use of a conventional transformer.