Method and a system for producing a power supply voltage for controlling an electronic switch
First Claim
1. A method of producing an auxiliary power supply voltage for controlling an electronic switch connected in series with a load to a single-phase alternating current mains supply, which method uses a residual voltage drop between terminals of the electronic switch so that the electrical energy needed to produce said auxiliary power supply voltage while said electronic switch is conducting is taken from the terminals of said electronic switch.
2 Assignments
0 Petitions
Accused Products
Abstract
A direct current supply voltage for controlling an electronic switch, for example a triac, is obtained from a residual voltage at the terminals of the switch when it is conducting. The electrical energy needed to produce an auxiliary power supply voltage is taken from the terminals of the electronic switch while it is conducting. The residual voltage is rectified and stepped up, for example using a regulated switch-mode power supply circuit as a rectifier/voltage step-up system.
14 Citations
20 Claims
- 1. A method of producing an auxiliary power supply voltage for controlling an electronic switch connected in series with a load to a single-phase alternating current mains supply, which method uses a residual voltage drop between terminals of the electronic switch so that the electrical energy needed to produce said auxiliary power supply voltage while said electronic switch is conducting is taken from the terminals of said electronic switch.
- 5. An electronic system for controlling an electrical power supply for a load, said system including an electronic switch adapted to be connected in series with said load to supply it with power from a single-phase alternating current mains supply, control means for said switch, and a first auxiliary direct current power supply circuit connected to supply power to said control means, wherein said first auxiliary direct current power supply circuit has an alternating current electrical energy input and said control means are adapted to connect said alternating current electrical energy input to said electronic switch when it is conducting.
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17. An electronic system for controlling an electrical power supply for a load, comprising:
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an electronic switch adapted to be connected in series with a load to supply the load with power from a single-phase alternating current mains supply;
control means connected to said electronic switch; and
a first auxiliary direct current power supply circuit connected to supply power to said control means, wherein, said first auxiliary direct current power supply having an alternating current electrical energy input, said control means connect said alternating current electrical energy input to said electronic switch when the switch is conducting, said control means include a connection interface between said electronic switch and said alternating current electrical energy input, and said connection interface includes an electromagnetic relay including a first switch connected between said electrical energy input and said electronic switch. - View Dependent Claims (18, 19, 20)
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Specification