Electrical control circuit for a central warning light of motor vehicles

Claim 2

An electric control circuit for testing during the starting up of a vehicle engine the functioning of a central warning light serving for indicating the operating condition of at least one electrical monitoring device for the vehicle comprising power source means, ignition switch means connected to said power source means, flasher-type direction-indicator transmitter means connected to said ignition switch means and providing a pulsating output signal, vehicle direction indicator signalling means connected to the output of said direction-indicator transmitter means, generator-regulator unit means providing an output signal in accordance with the operation of the vehicle engine, said warning light having a first terminal connected to the output of said direction-indicator transmitter means, a diode connected to a second terminal of said warning light and to said generatorregulator unit means for controlling the energization of said warning light in the test condition during the starting up of the vehicle engine, and at least one electrical monitoring device connected to the second terminal of said warning light, said diode initially permitting energization of said warning light in accordance with the pulsating output signal of said directionindicator transmitter means and being responsive to a predetermined output signal of said generator-regulator unit means corresponding to a predetermined engine speed for preventing an energizing circuit path for said warning light therethrough and de-energizing said warning light in the test condition, whereby said warning light may be energized in response to the operation of the at least one monitoring device connected thereto providing an energizing circuit path for said warning light.

Claim 3

An electric control circuit according to claim 1, wherein said diode has an anode connected to the second terminal of said warning light and a cathode connected to said generator-regulator unit means.

Claim 4

An electric control circuit according to claim 1, further comprising a charge control light having a first terminal connected to said ignition switch means and a second terminal connected to a cathode of said diode and to said generator-regulator unit means.

Claim 5

An electric control circuit according to claim 3, wherein said generator-regulator unit means includes a regulator and a generator, said regulator connected to said generator, and the cathode of said diode being connected to said regulator.

Claim 6

An electric control circuit for testing during the starting up of a vehicle engine the functioning of a central warning light serving for indicating the operating condition of at least one electrical monitoring device for the vehicle comprising power source means, ignition switch means connected to said power source means, flasher-type direction indicator transmitter means connected to said ignition switch means and providing a pulsating output signal, vehicle direction indicator signalling means connected to the output of said direction-indicator transmitter means, generator-regulator unit means providing an output signal in accordance with the operation of the vehicle engine, said warning light having a first terminal connected to the output of said direction-indicator transmitter means, relay means connected to a second terminal of said warning light and to said generator-regulator unit means for controlling the energization of said warning light in the test condition during the starting up of the vehicle engine, and at least one electrical monitoring device connecteD to the second terminal of said warning light, said relay means initially permitting energization of said warning light in accordance with the pulsating output signal of said direction-indicator transmitter means and being responsive to a predetermined output signal of said generator-regulator unit means corresponding to a predetermined engine speed for preventing an energizing circuit path for said warning light therethrough, and de-energizing said warning light in the test condition, whereby said warning light may be energized in response to the operation of at least one monitoring device connected thereto providing an energizing circuit path for said warning light.

Claim 7

An electric control circuit for testing during the starting up of a vehicle engine the functioning of a central warning light serving for indicating the operating condition of at least one electrical monitoring device for the vehicle comprising power source means, ignition switch means connected to said power source means, flasher-type direction indicator transmitter means connected to said ignition switch means and providing a pulsating output signal, vehicle direction indicator signalling means connected to the output of said direction-indicator transmitter means, generator-regulator unit means providing an output signal in accordance with the operation of the vehicle engine, said warning light having a first terminal connected to the output of said direction-indicator transmitter means, relay means connected to a second terminal of said warning light and to said generator-regulator unit means for controlling the energization of said warning light in the test condition during the starting up of the vehicle engine, and at least one electrical monitoring device connecteD to the second terminal of said warning light, said relay means initially permitting energization of said warning light in accordance with the pulsating output signal of said direction-indicator transmitter means and being responsive to a predetermined output signal of said generator-regulator unit means corresponding to a predetermined engine speed for preventing an energizing circuit path for said warning light therethrough, and de-energizing said warning light in the test condition, whereby said warning light may be energized in response to the operation of at least one monitoring device connected thereto providing an energizing circuit path for said warning light.

Claim 8

An electric control circuit according to claim 5, wherein said relay means includes a magnetic coil means connected in the electrical circuit between said ignition switch means and said generator-regulator unit means and a switching contact operated by said magnetic coil means connected to the second terminal of said warning light to provide an energizing circuit path for said warning light in the closed condition thereof.

Claim 9

An electric control circuit according to claim 6, further comprising a charge control light having a first terminal connected to said ignition switch means and a second terminal connected to said magnetic coil means of said relay means.