Voltage and power limiter for an electromagnetic transponder
First Claim
Patent Images
1. An electromagnetic transponder comprising:
- a resonant circuit;
a rectifying bridge having input terminals electrically coupled across the resonant circuit and having rectified output terminals configured to provide a voltage for powering an electronic circuit; and
a limiter configure to limit a voltage across the resonant circuit, electrically coupled between the input terminals of the rectifying bridge, wherein the limiter includes a detection circuit configured to compare the voltage across the resonant circuit with a threshold that is adjustable between first and second values, the second value being greater than the first value.
1 Assignment
0 Petitions
Accused Products
Abstract
An electromagnetic transponder including a resonant circuit; a rectifying bridge having input terminals connected across the resonant circuit and having rectified output terminals providing an electronic circuit power supply voltage; and a device for limiting the voltage across the resonant circuit, connected between the input terminals of the rectifying bridge.
-
Citations
14 Claims
-
1. An electromagnetic transponder comprising:
-
a resonant circuit; a rectifying bridge having input terminals electrically coupled across the resonant circuit and having rectified output terminals configured to provide a voltage for powering an electronic circuit; and a limiter configure to limit a voltage across the resonant circuit, electrically coupled between the input terminals of the rectifying bridge, wherein the limiter includes a detection circuit configured to compare the voltage across the resonant circuit with a threshold that is adjustable between first and second values, the second value being greater than the first value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A device comprising:
-
a resonant circuit; a rectifying bridge configured to rectify a voltage across the resonant circuit; and a limiter configure to limit the voltage across the resonant circuit, electrically coupled between the input terminals of the rectifying bridge, wherein the limiter includes a detection circuit configured to compare the voltage across the resonant circuit with a threshold that is adjustable between first and second values, the second value being greater than the first value. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
Specification