Circuit arrangement and method for controlling an electric load
AssigneeBraun GmbH
InventorsTorsten Klemm, Ingo Vetter
Life of this patent
Estimating the term…
Abstract
A circuit arrangement for controlling an electrical load is provided with a bridge circuit which comprises four electronic switches with the load arranged in a transverse leg of the bridge circuit. A control circuit has respective control terminals for the four electronic switches. The control terminal for the first electronic switch is connected to the control terminal for the fourth electronic switch by means of a series connection consisting of a first capacitor and a first resistance, and the control terminal for the third electronic switch is connected to the control terminal for the second electronic switch by means of a series connection consisting of a second capacitor and a second resistance.
Claims13
An electric load control circuit comprising:
- a bridge circuit having four electronic switches with a load arranged in a transverse branch thereof;
- and
- a controller having a respective control terminal for each of the four electronic switches;
- wherein the control terminal for the first electronic switch is connected to the control terminal for the fourth electronic switch via a series connection of a first capacitor and a first resistor, and the control terminal for the third electronic switch is connected to the control terminal for the second electronic switch via a series connection of a second capacitor and a second resistor.
A method of controlling an electric load, the method comprising:
- providing a bridge circuit having four electronic switches with the electric load arranged in a transverse branch thereof, the bridge circuit connected to a controller having a respective control terminal for each of the four electronic switches, with the control terminal for a first of the electronic switches connected to the control terminal for a fourth of the electronic switches via a series connection of a first capacitor and a first resistor, and the control terminal for a third of the electronic switches connected to the control terminal for a second of the electronic switches via a series connection of a second capacitor and a second resistor;
- and either
- switching one of the control terminals of the controller from a first one of a low output state and a high output state to a high impedance input state, and then
- switching said one of the control terminals from the high impedance input state to the other of a high output state and a low output state.
Dependencies are inferred from the claim text.