KR970029322A - Electronic bell with comparator - Google Patents

Electronic bell with comparator Download PDF

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Publication number
KR970029322A
KR970029322A KR1019950040403A KR19950040403A KR970029322A KR 970029322 A KR970029322 A KR 970029322A KR 1019950040403 A KR1019950040403 A KR 1019950040403A KR 19950040403 A KR19950040403 A KR 19950040403A KR 970029322 A KR970029322 A KR 970029322A
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KR
South Korea
Prior art keywords
bell
buzzer
comparator
sound
timer
Prior art date
Application number
KR1019950040403A
Other languages
Korean (ko)
Other versions
KR0176858B1 (en
Inventor
조정석
Original Assignee
구자홍
Lg 전자 주식회사
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.)
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Publication date
Application filed by 구자홍, Lg 전자 주식회사 filed Critical 구자홍
Priority to KR1019950040403A priority Critical patent/KR0176858B1/en
Publication of KR970029322A publication Critical patent/KR970029322A/en
Application granted granted Critical
Publication of KR0176858B1 publication Critical patent/KR0176858B1/en

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  • Measurement Of Predetermined Time Intervals (AREA)
  • Electronic Switches (AREA)

Abstract

본 발명은 비교기를 이용한 전자식 벨에 관한 것으로, 종래 기계식 타이머 벨을 제품에 적용할 경우 수급이 어려우며 단가가 상승하는 경향이 있으며, 마이크로 컴퓨터식 타이머 벨을 사용하는 경우에는 프로그램과 그 주변회로를 필요로 하여 구성상 복잡한 문제점이 있고, 종래기술 가운데 전자식 벨이 있는데, 이는 기계식으로 간단한 회로와 부저를 사용하여 기계식 타이머 벨의 소리를 내도록 하는 방식이나 그 부저의 소리가 처음에는 높았다가 점차로 낮아지며 길게 늘어지는 문제점이 있다.The present invention relates to an electronic bell using a comparator. When the conventional mechanical timer bell is applied to a product, supply and demand are difficult and the unit price tends to increase. When a microcomputer timer bell is used, a program and a peripheral circuit are required. There is a complicated problem in configuration, there is an electronic bell in the prior art, which is a mechanical way to make a mechanical timer bell sound using a simple circuit and a buzzer or the sound of the buzzer at first is gradually lowered and then elongated There is a problem losing.

따라서, 본 발명은 종래 전자식 벨의 음이 길게 늘어지는 것을 방지하여 기계식 차인벨의 음과 유사하도록 한 비교기를 이용한 진자식 벨을 제공하여 제품에 적용할 경우 기계식 타이머 벨의 단가 상승과 수급의 어려움을 해소토록 한다.Therefore, the present invention provides a pendulum bell using a comparator that prevents the sound of a conventional electronic bell from elongating and resembles the sound of a mechanical bell. To solve the problem.

Description

비교기를 이용한 전자식 벨Electronic bell with comparator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 종래의 기계식 타이머 벨 회로도.1 is a conventional mechanical timer bell circuit diagram.

제2도는 본 발명의 비교기를 이용한 전자식 벨 회로도.2 is an electronic bell circuit diagram using the comparator of the present invention.

Claims (2)

시간을 카운트하는 타이머의 오프 시점을 감지하여 트랜지스터의 온, 오프동작을 제어하는 타이머 감지수단과, 저항과 콘덴서에 의한 시정수에 따라 부저음의 시간을 조절하여 주는 부저음 제어수단으로 구성된 타이머 벨에 있어서, 상기 부저음 제어수단의 출력 전압과 기준전압을 비교하고 그 비교출력에 따라 부저를 제어하여 부저음의 늘어짐을 방지하도록 한 부저음 시간 조절수단을 더 포함하여 구성된 것을 특징으로 하는 비교기를 이용한 전자식 벨.In the timer bell consisting of a timer sensing means for detecting the off time of the timer for counting the time to control the on and off operation of the transistor, and a buzzer control means for adjusting the time of the buzzer according to the time constant by the resistor and the capacitor. And a buzzer time adjusting means for comparing the output voltage and the reference voltage of the buzzer control means and controlling the buzzer according to the comparison output to prevent sagging of the buzzer sound. 제1항에 있어서, 부저음 시간 조절수단은 비교기인 것을 특징으로 하는 비교기를 이용한 전자식 벨.The electronic bell using the comparator according to claim 1, wherein the buzzer time adjusting means is a comparator. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950040403A 1995-11-09 1995-11-09 Electronic bell with comparator KR0176858B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950040403A KR0176858B1 (en) 1995-11-09 1995-11-09 Electronic bell with comparator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950040403A KR0176858B1 (en) 1995-11-09 1995-11-09 Electronic bell with comparator

Publications (2)

Publication Number Publication Date
KR970029322A true KR970029322A (en) 1997-06-26
KR0176858B1 KR0176858B1 (en) 1999-04-01

Family

ID=19433480

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950040403A KR0176858B1 (en) 1995-11-09 1995-11-09 Electronic bell with comparator

Country Status (1)

Country Link
KR (1) KR0176858B1 (en)

Also Published As

Publication number Publication date
KR0176858B1 (en) 1999-04-01

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