High-efficiency driver circuit for capacitive loads
First Claim
1. An electronic system comprising:
- a) an electronic circuit for applying a voltage waveform to a capacitive load;
b) a switching circuit connected to the capacitive load for supplying a fraction of current demanded by the capacitive load; and
c) a control circuit for controlling the switching circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
A circuit for driving capacitive loads in a highly efficient manner. In one embodiment, a drive portion is connected to at least one end of a capacitive electric load being applied a voltage waveform. The embodiment further comprises a switching circuit portion having its output connected to the above one end of the capacitive load in order to supply a fraction of the overall current demanded by the load. Additionally, a switching circuit and accompanying switching method provide for efficiently supplying peak current to the capacitive load during voltage fluctuation in the voltage waveform. Briefly, the invention is a circuit arrangement aimed at providing a highly efficient drive for the capacitive load, using a combined linear/switching setup and without distorting the quality of the waveform generated across the capacitive load.
-
Citations
25 Claims
-
1. An electronic system comprising:
-
a) an electronic circuit for applying a voltage waveform to a capacitive load;
b) a switching circuit connected to the capacitive load for supplying a fraction of current demanded by the capacitive load; and
c) a control circuit for controlling the switching circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for supplying current to a capacitive load, the method comprising:
-
a) supplying an amount of current to the capacitive load by generating a voltage waveform from an electronic driving circuit connected to the capacitive load;
b) supplying an amount of current to the capacitive load by generating a voltage waveform from a switching circuit connected to the capacitive load; and
c) switching the switching circuit using a control circuit, the control circuit optimally switching said switching circuit to supply current to the capacitive load. - View Dependent Claims (10, 11, 12, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24, 25)
-
-
13. A method for supplying current to a capacitive load, the method comprising:
-
a) supplying a linear amount of current to the capacitive load through an electronic driving circuit, connected to the capacitive load;
b) supplying a decaying amount of current to the capacitive load through a switching circuit connected to the capacitive load; and
c) switching the switching circuit using a control circuit, the control circuit optimally switching said switching circuit to supply current to the capacitive load.
-
-
17. A high-efficiency driver circuit for capacitive loads, which circuit comprises a drive portion connected to at least one end of a capacitive electric load being applied a voltage waveform, characterized in that it further comprises a switching circuit portion having its output connected to said one end of the capacitive load to supply a fraction of the overall current demanded by the load.
Specification