JPS55149811A - Electronic balance - Google Patents

Electronic balance

Info

Publication number
JPS55149811A
JPS55149811A JP5854879A JP5854879A JPS55149811A JP S55149811 A JPS55149811 A JP S55149811A JP 5854879 A JP5854879 A JP 5854879A JP 5854879 A JP5854879 A JP 5854879A JP S55149811 A JPS55149811 A JP S55149811A
Authority
JP
Japan
Prior art keywords
circuit
weight
frequency
output
inputted
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP5854879A
Other languages
Japanese (ja)
Inventor
Shoei Kotani
Masanori Kajiwara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP5854879A priority Critical patent/JPS55149811A/en
Publication of JPS55149811A publication Critical patent/JPS55149811A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the resolution while dispensing with the A-D converter by digital indication of the frequency which changes according to the displacement of the weighing base with a direct counting thereof through the conversion into weight.
CONSTITUTION: When the article 25 is placed on the weighing base 15, the mobile member 17 of the Roberval mechanism is displaced until the weight of the article balances with the force of the weighing spring 16, and the capacitance of the variable condenser 14 varies causing a change in the frequency of the oscillation circuit 13. The output and the output of a fixed frequency from the oscillation circuit 11 are inputted into the mixing circuit 18. The output of the beat frequency from the mixing circuit 18 is inputted into the count circuit 22 through the low pass filter 21. The discrete value of the count circuit 22 is converted into the weight by the conversion circuit. In addition, the digital indicator is driven by the indication drive circuit 24 to indicate the weight.
COPYRIGHT: (C)1980,JPO&Japio
JP5854879A 1979-05-11 1979-05-11 Electronic balance Pending JPS55149811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5854879A JPS55149811A (en) 1979-05-11 1979-05-11 Electronic balance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5854879A JPS55149811A (en) 1979-05-11 1979-05-11 Electronic balance

Publications (1)

Publication Number Publication Date
JPS55149811A true JPS55149811A (en) 1980-11-21

Family

ID=13087504

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5854879A Pending JPS55149811A (en) 1979-05-11 1979-05-11 Electronic balance

Country Status (1)

Country Link
JP (1) JPS55149811A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606829A (en) * 1983-05-09 1985-01-14 セトラ・システムズ・インコ−ポレイテツド Weighing system
JPS6433623U (en) * 1987-08-20 1989-03-02
JPH0557527B2 (en) * 1981-05-19 1993-08-24 Setra Systems Inc
US5790107A (en) * 1995-06-07 1998-08-04 Logitech, Inc. Touch sensing method and apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0557527B2 (en) * 1981-05-19 1993-08-24 Setra Systems Inc
JPS606829A (en) * 1983-05-09 1985-01-14 セトラ・システムズ・インコ−ポレイテツド Weighing system
JPH07117445B2 (en) * 1983-05-09 1995-12-18 セトラ・システムズ・インコーポレイテッド Weighing system
JPS6433623U (en) * 1987-08-20 1989-03-02
US5790107A (en) * 1995-06-07 1998-08-04 Logitech, Inc. Touch sensing method and apparatus

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