Switch actuated circuits
AssigneeBenmore Ventures Limited
InventorsBryn Griffiths, Jon Duncan
Life of this patent
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Abstract
A trigger circuit (10) comprises a switch member (SW1) connected in series with a high-ohmic resistive element (R1), the junction between the switch member and the resistor element being connected via a capacitor (C1) to the input of a circuit (20) to be triggered. The circuit (20) operates a light-emitting source (130, FIG. 3). The switch (SW1) can be a user-operated switch, a tilt switch (100, FIG. 2) or can be a comparator (124) responsive to an external factor e.g. incoming vibrations.
Claims14
A battery powered switching arrangement for triggering operation of a device (130), comprising an integrated circuit (20, 120) and a switch member (SW1, 124, 100) for actuating an input of the integrated circuit, wherein the switch member is connected in series with a high-ohmic resistive element (R1), and wherein a junction between the switch member and the resistive element is connected via a capacitor (C1) to the input of the integrated circuit (20, 120).
A switching arrangement according to any preceding claim, wherein the device (130) comprises at least one LED device.
Dependencies are inferred from the claim text.