JPH0410542U - - Google Patents
Info
- Publication number
- JPH0410542U JPH0410542U JP4763090U JP4763090U JPH0410542U JP H0410542 U JPH0410542 U JP H0410542U JP 4763090 U JP4763090 U JP 4763090U JP 4763090 U JP4763090 U JP 4763090U JP H0410542 U JPH0410542 U JP H0410542U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- voltage
- diode
- detection means
- circuit
- 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
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 239000013256 coordination polymer Substances 0.000 description 1
Landscapes
- Exposure Control For Cameras (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案のカメラの電源回路の一実施例
の構成図、第２図は第１図の実施例の動作説明の
ための波形図、第３図は従来のカメラの電源回路
の構成図、第４図は従来のカメラの電源回路の動
作説明のための波形図、第５図は第３図の従来の
回路の動作説明のための波形図である。
１……電池、２……カメラ動作制御回路（ＣＰ
Ｕ）、３……電圧検出手段、４……駆動回路、５
……コンデンサ、６……ダイオード、７……スイ
ツチング手段、８……起動スイツチ、９ａ，９ｂ
……抵抗。
Fig. 1 is a configuration diagram of an embodiment of the camera power supply circuit of the present invention, Fig. 2 is a waveform diagram for explaining the operation of the embodiment of Fig. 1, and Fig. 3 is the configuration of a conventional camera power supply circuit. 4 is a waveform diagram for explaining the operation of the conventional camera power supply circuit, and FIG. 5 is a waveform diagram for explaining the operation of the conventional circuit of FIG. 1...Battery, 2...Camera operation control circuit (CP
U), 3... Voltage detection means, 4... Drive circuit, 5
... Capacitor, 6 ... Diode, 7 ... Switching means, 8 ... Starting switch, 9a, 9b
……resistance.
Claims (1)
出力をバツクアツプするためのコンデンサと、こ
のコンデンサに蓄えられた電荷が逆流することを
防止するためのダイオードとを備えたカメラの電
源回路において、前記電池電圧とコンデンサ電圧
とを検出する電圧検出手段と、この電圧検出手段
によりコンデンサ電圧が電池電圧より低いことが
検出された時に前記ダイオードをシヨートするス
イツチチング手段とを備えたことを特徴とするカ
メラの電源回路。 In a camera power supply circuit equipped with a capacitor for backing up the power output of the camera operation control circuit when the battery voltage is low and a diode for preventing the charge stored in the capacitor from flowing backward, and a voltage detection means for detecting a capacitor voltage, and a switching means for switching off the diode when the voltage detection means detects that the capacitor voltage is lower than the battery voltage. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4763090U JPH0410542U (en) | 1990-05-09 | 1990-05-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4763090U JPH0410542U (en) | 1990-05-09 | 1990-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0410542U true JPH0410542U (en) | 1992-01-29 |
Family
ID=31563728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4763090U Pending JPH0410542U (en) | 1990-05-09 | 1990-05-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0410542U (en) |
-
1990
- 1990-05-09 JP JP4763090U patent/JPH0410542U/ja active Pending