Electronic flasher unit
AssigneeTemic Telefunken microelectronic GmbH
InventorAndreas Fritz
Life of this patent
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Abstract
An electronic flasher unit for one or more flashing lamps activated by flasher switches is described. The flasher unit has at least three control inputs and an integrated circuit for controlling a flashing relay with relay contacts. In addition, further switching means are provided that can be used to alter the operating state of the integrated circuit as a function of the switch settings of the flasher switches and the ignition switch.
Claims16
An electronic flasher unit for controlling a plurality of flashing lamps and connectable to a battery, an ignition switch connected to the battery, a turn indicator switch, a hazard warning flasher switch, and a grounding point, said electronic flasher unit comprising:
- a battery terminal connectable to the battery;
- a ground terminal connectable to the grounding point;
- at least a first, a second, and a third control input terminal connectable respectively to the ignition switch, the turn indicator switch, and the hazard warning flasher switch;
- a flashing relay having a plurality of relay contacts that are connected respectively to said second and said third control input terminals;
- an integrated circuit which has a first connecting pin which controls said flashing relay, a second connecting pin which is a measuring input and is connected to said plurality of relay contacts and is also connected, via a measuring resistor, to said battery terminal, a third connecting pin which is a hazard warning flasher input and is connected, via an inner resistor which is inside said integrated circuit, to said second connecting pin and is also connected, via a first resistor, to said third control input terminal, and a fourth connecting pin which is a turn indicator input and is connected, via a second resistor, to said second control input terminal;
- a plurality of resistors coupled to said first, said second, and said third control input terminals, wherein said plurality of resistors output a plurality of voltage drops in response to the input of at least a first, a second, and a third switch setting signal from said first, said second, and said third control input terminals, respectively;
- and
- a switching means, within said integrated circuit, coupled to said plurality of resistors via a plurality of connecting pins of said integrated circuit, to change the operating state of said integrated circuit in response to said plurality of voltage drops from said plurality of resistors.
Dependencies are inferred from the claim text.