Relay circuit for controlling an inductive load
AssigneeLinak A/S
InventorKjeld Kristiansen
Life of this patent
Estimating the term…
Abstract
An electric circuit is provided for an inductive load including a first relay and a second relay for connecting the inductive load with a power supply. Both relays are connected to the inductive load so as to be activated when the voltage drop across the inductive load is to be interrupted and/or inverted.
Claims9
An electric circuit comprising an electrically activatable first relay (21) which connects a first connecting point (1) electrically to a second connecting point (2) in a non-activated state and connects the first connecting point (1) to a third connecting point (3) in an activated state,
- and a second electrically activatable relay (22) which connects a first connecting point (1a) electrically to a second connecting point (2a) in a non-activated state and connects the first connecting point (1a) to a third connecting point (3a) in an activated state,
- an inductive load, preferably one or more electric motors (14), being coupled between the two first connecting points (1) and (1a) so that the inductive load is connected to a power supply (12) in given positions of the relays (2, 3a;
- 3, 2a),
- said circuit being adapted to activate both relays (21, 22) when the voltage drop across the inductive load is to be interrupted or inverted.
An electric circuit for controlling inductive loads, comprising an electrically activatable first relay (21) which connects a first connecting point (1) electrically to a second connecting point (2) in a non-activated state and connects the first connecting point (1) to a third connecting point (3) in an activated state,
- and a second electrically activatable relay (22) which connects a first connecting point (1a) electrically to a second connecting point (2a) in a non-activated state and connects the first connecting point (1a) to a third connecting point (3a) in an activated state,
- said circuit being adapted to be coupled to an inductive load between the two first connecting points (1) and (1a) so that the inductive load is connected to a power supply in given positions of the relays (2, 3a;
- 3, 2a),
- said circuit being adapted to activate both relays (21,22) when the voltage drop across a possibly coupled inductive load is to be interrupted and/or inverted.
An electric circuit comprising an electrically activatable first relay (21) which connects a first connecting point (1) electrically to a second connecting point (2) in a non-activated state and connects the first connecting point (1) to a third connecting point (3) in an activated state,
- and a second electrically activatable relay (22) which connects a first connecting point (1a) electrically to a second connecting point (2a) in an activated state and connects the first connecting point (1a) to a third connecting point (3a) in an activated state,
- an electric load being coupled between the two first connecting points (1) and (1a), so that the electrical load is connected to a power supply in given positions of the relays (2, 3a;
- 3, 2a),
- said circuit being adapted to activate both relays (21,22) when the voltage drop across the electric load is to be interrupted and/or inverted.
Dependencies are inferred from the claim text.