Circuitry for supplying a load with an output current

A circuitry comprising:

• a converter for generating an alternating current signal from energy from an energy source;
• a piezo transformer with an input and an output, wherein the input of the piezo transformer is electrically coupled to the converter to receive the alternating current signal from the converter as an input side excitation, and wherein the output of the piezo transformer is designed to provide an output current;
• and
• a load coupled to the output of the piezo transformer so that output current flows through the same,
• which is designed to convert at least part of the electrical energy supplied by the output current flowing through the load into another form of energy, and
• which is further designed such that a useful power provided in the form of useful energy is substantially proportional to the output current;
• and
• wherein the circuitry is designed to adjust the output current to a predetermined value;
• the circuitry further comprising an input current determiner for deriving an input current description signal, which describes a quantity of a current flow in the converter or a quantity of the alternating current signal provided by the converter to the input of the piezo transformer, and a regulator,
• wherein the regulator is designed to control the converter in order to regulate the quantity of the current flow in the converter or the quantity of the alternating current signal provided by the converter to the input of the piezo transformer based on the input current description signal to a predetermined value.

A circuitry comprising:

• a converter for generating an alternating current signal from energy from an energy source;
• a piezo transformer with an input and an output, wherein the input of the piezo transformer is electrically coupled to the converter to receive the alternating current signal from the converter as an input side excitation, and wherein the output of the piezo transformer is designed to provide an output current;
• and
• a load coupled to the output of the piezo transformer so that output current flows through the same,
• which is designed to convert at least part of the electrical energy supplied by the output current flowing through the load into another form of energy, and
• which is further designed such that a useful power provided in the form of useful enemy is substantially proportional to the output current;
• and
• wherein the circuitry is designed to adjust the output current to a predetermined value;
• wherein the piezo transformer comprises an auxiliary output for transformationally providing an auxiliary signal, whose amplitude is substantially proportional to a load alternating current through a resonant circuit of the piezo transformer, and which further comprises a regulator, which is designed to control the converter in dependence on the auxiliary signal.

A circuitry comprising:

• a converter for generating an alternating current signal from energy from an energy source;
• a piezo transformer with an input and an output, wherein the input of the piezo transformer is electrically coupled to the converter to receive the alternating current signal from the converter as an input side excitation, and wherein the output of the piezo transformer is designed to provide an output current;
• and
• a load coupled to the output of the piezo transformer so that output current flows through the same,
• which is designed to convert at least part of the electrical energy supplied by the output current flowing through the load into another form of energy, and
• which is further designed such that a useful power provided in the form of useful energy is substantially proportional to the output current;
• and
• wherein the circuitry is designed to adjust the output current to a predetermined value;
• wherein the converter unit comprises an inductance, which is connected between a supply voltage terminal for receiving a supply direct voltage and a first input terminal of the piezo transformer, so that a first terminal of the inductance is coupled to the first supply terminal, and such that a second terminal of the inductance is coupled to the first input terminal of the piezo transformer, and
• wherein the converter further comprises a switch whose first terminal is coupled to the second terminal of the inductance and the first input terminal of the piezo transformer, and whose second terminal is coupled to a second input terminal of the piezo transformer and a second supply terminal for receiving the supply direct voltage,
• so that the converter unit forms a class E converter.

A circuitry comprising:

• a converter for generating an alternating current signal from energy from an energy source;
• a piezo transformer with an input and an output, wherein the input of the piezo transformer is electrically coupled to the converter to receive the alternating current signal from the converter as an input side excitation, and wherein the output of the piezo transformer is designed to provide an output current;
• and
• a load coupled to the output of the piezo transformer so that output current flows through the same,
• which is designed to convert at least part of the electrical energy supplied by the output current flowing through the load into another form of energy, and
• which is further designed such that a useful power provided in the form of useful energy is substantially proportional to the output current;
• and
• wherein the circuitry is designed to adjust the output current to a predetermined value;
• wherein the load comprises one or several light-emitting diodes, and wherein the form of the useful energy is light energy,
• wherein the load comprises a series connection of at least two sections, wherein the first section comprises a parallel connection of two branches, wherein the first branch of the first section comprises one or several light-emitting diodes, which are connected in a first direction between a first terminal of the first section and a second terminal of the first section, and wherein the second branch of the first section comprises one or several light-emitting diodes, which are connected in a second direction, which is opposite to the first direction, between the first terminal of the first section and the second terminal of the first section, and
• wherein the second section comprises a parallel connection of the two branches, wherein the first branch of the second section comprises one or several light-emitting diodes, which are connected in a first orientation between a first terminal of the second section and a second terminal of the second section, and wherein the second branch of the second section comprises one or several light-emitting diodes, which are connected in a second orientation, which is opposite to the first orientation, between the first terminal of the second section and the second terminal of the second section.

A circuitry comprising:

• a converter for generating an alternating current signal from energy from an energy source;
• a piezo transformer with an input and an output, wherein the input of the piezo transformer is electrically coupled to the converter to receive the alternating current signal from the converter as an input side excitation, and wherein the output of the piezo transformer is designed to provide an output current;
• and
• a load coupled to the output of the piezo transformer so that output current flows through the same,
• which is designed to convert at least part of the electrical energy supplied by the output current flowing through the load into another form of energy, and
• which is further designed such that a useful power provided in the form of useful energy is substantially proportional to the output current;
• and
• wherein the circuitry is designed to adjust the output current to a predetermined value;
• wherein the load comprises one or several light-emitting diodes, and wherein the form of the useful energy is light energy, wherein the load comprises a bridge rectifier, whose input is coupled to the output of the piezo transformer to receive the output current, and whose output is coupled to a bridge rectifier output load, wherein diodes of the bridge rectifier are designed as light-emitting diodes.

A circuitry comprising:

• a converter for generating an alternating current signal from energy from an energy source;
• a piezo transformer with an input and an output, wherein the input of the piezo transformer is electrically coupled to the converter to receive the alternating current signal from the converter as an input side excitation, and wherein the output of the piezo transformer is designed to provide an output current;
• and
• a load coupled to the output of the piezo transformer so that output current flows through the same,
• which is designed to convert at least part of the electrical energy supplied by the output current flowing through the load into another form of energy, and
• which is further designed such that a useful power provided in the form of useful energy is substantially proportional to the output current;
• and
• wherein the circuitry is designed to adjust the output current to a predetermined value, and wherein the load comprises an accumulator, and wherein the form of the useful energy is chemical energy.

A circuitry comprising:

• a converter for generating an alternating current signal from energy from an energy source;
• a piezo transformer with an input and an output, wherein the input of the piezo transformer is electrically coupled to the converter to receive the alternating current signal from the converter as an input side excitation, and wherein the output of the piezo transformer is designed to provide an output current;
• and
• a load coupled to the output of the piezo transformer so that output current flows through the same,
• which is designed to convert at least part of the electrical energy supplied by the output current flowing through the load into another form of energy, and
• which is further designed such that a useful power provided in the form of useful energy is substantially proportional to the output current;
• and
• wherein the circuitry is designed to adjust the output current to a predetermined value, wherein the load comprises a parallel connection of a first accumulator branch and a second accumulator branch, wherein the first accumulator branch comprises a series connection of a first diode and a first accumulator, which are connected in a first polarity between a first terminal of the load and a second terminal of the load, and wherein the second accumulator branch comprises a series connection of a second diode and a second accumulator, which are connected in a second polarity opposite to the first polarity between the first terminal of the load and the second terminal of the load.