The present invention relates to a method to generate at least a supply voltage to supply energy to a hearing device, whereas the ratio between the supply voltage and the source voltage is adjustable. The hearing device substantially comprises a source (Q)...

Using the combination of batteries (201) and supercapacitors (207,208) to provide impulse, various all-in-one power tools driven by the impulse are devised. The impulse may be utilized in three ways, namely, to launch an object, to create an impact force, ...

An electrical item such as a pocket torch has a power supply (10) coupled to the LED (2) and lens module (8). The supply has capacitor groups (9a,b) based upon capacitors (3), protective isolators (20) and opto isolators (21). A cover (11) fits onto the en...

A capacitor unit (1) with plural double layer capacitors (11) eliminating irregularity in a state of charge of the respective double layer capacitor (11) in the capacitor unit (1). A capacitor unit (1), a capacitor unit control method, a capacitor unit con...

The charge of the autonomous capacitor (C) is measured (6a). A current limiter (1) restricts current drawn (I) from the supply network (2) as a function of the measured charge (Uc(t)) on the capacitor (C).

To enable a relatively constant output voltage at a DC/DC converter (28) of a field device (10) during a predictable time after shut-down of energy supplied to the DC/DC converter (28) there is proposed a load voltage controller having a comparison unit (5...

During an intermittent operation mode, a switch is normally opened and a capacitor with a large capacitance is isolated from a circuit. Under this condition, a power source voltage is intermittently supplied to a driven device. Since a charge/discharge cur...

An apparatus for supplying and controlling electrical power having a power source (3) for supplying electrical power to a primary load (4) and a secondary load (6, 7, 8) a capacitor (12) connected to an input (11) to the secondary load (6, 7, 8) and contro...