SG127750A1 - Power supply circuit in ic chip for non-contact iccard - Google Patents

Power supply circuit in ic chip for non-contact iccard

Info

Publication number
SG127750A1
SG127750A1 SG200503023A SG200503023A SG127750A1 SG 127750 A1 SG127750 A1 SG 127750A1 SG 200503023 A SG200503023 A SG 200503023A SG 200503023 A SG200503023 A SG 200503023A SG 127750 A1 SG127750 A1 SG 127750A1
Authority
SG
Singapore
Prior art keywords
chip
iccard
contact
power supply
supply circuit
Prior art date
Application number
SG200503023A
Inventor
Shiro Sugimura
Hideki Kobayashi
Shuhei Taniguchi
Original Assignee
Fec Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fec Co Ltd filed Critical Fec Co Ltd
Priority to SG200503023A priority Critical patent/SG127750A1/en
Publication of SG127750A1 publication Critical patent/SG127750A1/en

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  • Transmitters (AREA)
  • Dc-Dc Converters (AREA)
  • Amplifiers (AREA)

Abstract

The capacitance of a smoothing capacitor is reduced, and the size of an IC chip is minimized. A series transistor is provided on the output side of a diode which rectifies the output voltage of an antenna, and the smoothing capacitor is connected to the base of the series transistor. If the current gain of the series transistor T is [err], then the apparent capacitance of the smoothing capacitor C2 is multiplied by [err]. Fig 1
SG200503023A 2005-05-12 2005-05-12 Power supply circuit in ic chip for non-contact iccard SG127750A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SG200503023A SG127750A1 (en) 2005-05-12 2005-05-12 Power supply circuit in ic chip for non-contact iccard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SG200503023A SG127750A1 (en) 2005-05-12 2005-05-12 Power supply circuit in ic chip for non-contact iccard

Publications (1)

Publication Number Publication Date
SG127750A1 true SG127750A1 (en) 2006-12-29

Family

ID=38461732

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200503023A SG127750A1 (en) 2005-05-12 2005-05-12 Power supply circuit in ic chip for non-contact iccard

Country Status (1)

Country Link
SG (1) SG127750A1 (en)

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