JPS63148894U - - Google Patents
Info
- Publication number
- JPS63148894U JPS63148894U JP4188587U JP4188587U JPS63148894U JP S63148894 U JPS63148894 U JP S63148894U JP 4188587 U JP4188587 U JP 4188587U JP 4188587 U JP4188587 U JP 4188587U JP S63148894 U JPS63148894 U JP S63148894U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- capacitor
- flop
- flip
- reset
- 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
Links
Landscapes
- Electric Clocks (AREA)
- Electromechanical Clocks (AREA)
Description
第１図は本考案の一実施例を適用した電子時計
の概略的な回路構成を示すブロツク図、第２図は
上記実施例に係る発振停止検出回路１２の具体的
構成を示す回路図、第３図ａ〜ｆは第２図の回路
の各部の波形わ表したタイミングチヤート、第４
図は本考案の他の実施例に係る発振停止検出回路
１２の具体的構成を示す回路図、第５図ａ〜ｅは
第４図の回路の各部の波形を表したタイミングチ
ヤートである。
２……発振回路、３……分周回路、５……表示
制御部、６……表示部、８……太陽電池、１２…
…発振停止検出回路、２１……ＣＭＯＳインバー
タ、２２……抵抗、２３……コンデンサ、２４，
２５……コンパレータ、２６……基準電圧発生回
路、２７……オア回路、２８……ＲＳフリツプフ
ロツプ、３１……モノマルチ、３２……Ｐチヤネ
ルＭＯＳトランジスタ、３３……コンデンサ、３
４……抵抗、３５……ＣＭＯＳインバータ。
FIG. 1 is a block diagram showing a schematic circuit configuration of an electronic timepiece to which an embodiment of the present invention is applied. FIG. 2 is a circuit diagram showing a specific configuration of an oscillation stop detection circuit 12 according to the above embodiment. Figures 3a to 3f are timing charts showing the waveforms of each part of the circuit in Figure 2.
This figure is a circuit diagram showing a specific configuration of an oscillation stop detection circuit 12 according to another embodiment of the present invention, and FIGS. 5a to 5e are timing charts showing waveforms of various parts of the circuit of FIG. 4. 2... Oscillation circuit, 3... Frequency dividing circuit, 5... Display control section, 6... Display section, 8... Solar cell, 12...
...Oscillation stop detection circuit, 21...CMOS inverter, 22...Resistor, 23...Capacitor, 24,
25... Comparator, 26... Reference voltage generation circuit, 27... OR circuit, 28... RS flip-flop, 31... Mono multi, 32... P channel MOS transistor, 33... Capacitor, 3
4...Resistor, 35...CMOS inverter.
Claims (1)
る発振停止報知装置であつて、 前記小型電子機器の発振回路部からの信号を分
周する分周回路と、 コンデンサと抵抗とを接続してなるＣＲ回路と
、 前記分周回路からの分周信号を受けて前記コン
デンサを充放電する充放電制御部と、 前記コンデンサの充電電圧が所定範囲外になつ
たことを検出する検出部と、 該検出部からの検出信号でリセツトされ、かつ
外部スイツチの操作に基づくリセツト信号でリセ
ツトされるフリツプフロツプと、 該フリツプフロツプのセツト時出力によつて作
動される報知手段とを備えたことを特徴とする発
振停止報知装置。[Scope of Claim for Utility Model Registration] An oscillation stop notification device for a small electronic device using a solar cell as a power supply section, comprising: a frequency dividing circuit that divides a signal from an oscillation circuit section of the small electronic device; a capacitor; a CR circuit connected to a resistor; a charge/discharge control section that charges and discharges the capacitor in response to a frequency division signal from the frequency divider circuit; and a charge/discharge control section that detects that the charging voltage of the capacitor is outside a predetermined range. a flip-flop that is reset by a detection signal from the detector and reset by a reset signal based on the operation of an external switch, and a notification means activated by an output of the flip-flop when the flip-flop is set. An oscillation stop notification device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4188587U JPS63148894U (en) | 1987-03-20 | 1987-03-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4188587U JPS63148894U (en) | 1987-03-20 | 1987-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63148894U true JPS63148894U (en) | 1988-09-30 |
Family
ID=30857292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4188587U Pending JPS63148894U (en) | 1987-03-20 | 1987-03-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63148894U (en) |
-
1987
- 1987-03-20 JP JP4188587U patent/JPS63148894U/ja active Pending
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