CN2742653Y - Back up power switch circuit board for anaesthesia machine - Google Patents
Back up power switch circuit board for anaesthesia machine Download PDFInfo
- Publication number
- CN2742653Y CN2742653Y CN 200420082475 CN200420082475U CN2742653Y CN 2742653 Y CN2742653 Y CN 2742653Y CN 200420082475 CN200420082475 CN 200420082475 CN 200420082475 U CN200420082475 U CN 200420082475U CN 2742653 Y CN2742653 Y CN 2742653Y
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- CN
- China
- Prior art keywords
- circuit board
- ic201b
- switch circuit
- power supply
- power switch
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a back up power switch circuit board for an anesthesia machine, which is characterized in that the back up power switch circuit board for the anesthesia machine is composed of six MOSFET pipes M201-M206 of the P channel of the electronic switch, two MOSFET pipes M207-M208 of the N channel, two coincidence gates IC201B-201C, one analog switch IC202, two diodes D201-D202, two capacitors C201-C201, and a plurality of resistors. The working power supply +6V provided by a power source is connected to the D end of the M201; the positive end exported by a backup battery is connected to the D end of the M204; a load is connected to the D end of the M202 and M203; a control signal is added to driving tubes M207-M208 through the IC202 and the two coincidence gates IC201B-IC201C; the driving tubes M207-M208 can open four electronic switches M201-M204. The utility model has the advantages of high speed, stability, and reliability.
Description
Technical field
The utility model relates to a kind of back-up source commutation circuit plate that is used for Anesthesia machine, belongs to back-up source commutation circuit technical field.
Background technology
In the modern life, many equipment, instrument are all used back-up source, all must use back-up source as the computer system of bank, surgical apparatus in the hospital.The past back-up source switches uses relay usually, and its shortcoming is: 1 power supply is long switching time; 2 components and parts life-spans are short.
Summary of the invention
The purpose of this utility model is a kind of fast, stable, reliable back-up source commutation circuit plate that is used for Anesthesia machine of invention.
For realizing above purpose, the technical solution of the utility model provides a kind of back-up source commutation circuit plate that is used for Anesthesia machine, it is characterized in that, MOSFET pipe M201～M206 by 6 electronic switch P raceway grooves, the MOSFET pipe M207～M208 of 2 N raceway grooves, 2 and a door IC201B-201C, an analog switch IC202,2 diode D201-D202,2 capacitor C 201-C201 and several resistance are formed, working power+the 6V that is provided by power supply is connected on the D end of M201, the D end that just terminates at M204 of reserve battery output, load is connected on M202, the D end of M203, control signal is through IC202,2 with the door IC201B-IC201C be added to driving tube M207～M208, driving tube M207～M208 opens 4 electronic switch M201～M204 again.
The utility model has adopted the MOSFET pipe M201～M204 of 4 P raceway grooves as electronic switch, 2 P channel mosfet pipe M205～M206 are as drive circuit, working power+the 6V that is provided by power supply is connected on the D end of M201, the D end that just terminates at M204 of reserve battery output, load is connected on the D end of M202, M203.Because be equivalent to a diode between the DS of MOSFET, so when the D end had voltage, the S end also had voltage.Can know by top understanding: if battery has voltage, then the S of M204 end also has voltage; If+6V exists, then the S of M201 end also has voltage.That is to say that as long as there is voltage to be added in the D end of M201 or M204, then they all are equivalent to a switch of often opening, M202 and M203 then need the conducting of control signal ability.
Analyze the operating state of M202 and M203 below
| Mains switch is opened | +6V＝1 | Cell voltage=1 | M201 conducting M202 conducting | M203 ends by M204 | Load is connected with+6V |
| Cell voltage=0 | |||||
| +6V＝0 | Cell voltage=1 | M201 ends by M202 | M203 conducting M204 conducting | Load and battery are connected | |
| Cell voltage=0 | |||||
| Mains switch closes | No matter whether+6V and battery have electricity, M201～M204 Close All | ||||
Note: ' having ' and ' not having ' state of here ' 1 ' and ' 0 ' representative voltage
We can find by top analysis, and when mains switch was opened, as long as have+existence of 6V power supply, no matter whether battery has electricity, load all provided energy by power supply+6V.When power supply+6V does not exist, to judge just whether battery has electricity, if electricity is arranged then load provides energy by battery.If battery does not have electricity yet, then load is not worked.Therefore our circuit will detect+state of 6V power supply, so adopted the detection signal of the BATTERY of IC206B output as stand-by power supply, when power supply+6V exists, BATTERY is a low level, when power supply+6V does not exist, when this moment, battery had electricity, BATTERY is a high level, when power supply+6V and battery all do not have electricity, then there is not electricity to offer load, load just quits work.Because commutation circuit adopted the MOSFET pipe, so switch speed is very fast, the speed of tens nanosecond normally.And the MOSFET pipe is a contactless device, so the life-span is far longer than relay.
The utility model has the advantages that quick, stable, reliable.
Description of drawings
Fig. 1 is the back-up source commutation circuit plate schematic diagram that is used for Anesthesia machine.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1, for being used for the back-up source commutation circuit plate schematic diagram of Anesthesia machine, MOSFET pipe M201～M206 by 6 electronic switch P raceway grooves, the MOSFET pipe M207～M208 of 2 N raceway grooves, 2 and a door IC201B-201C, an analog switch IC202,2 diode D201-D202,2 capacitor C 201-C201 and several resistance are formed, working power+the 6V that is provided by power supply is connected on the D end of M201, the D end that just terminates at M204 of reserve battery output, load is connected on M202, the D end of M203, control signal is through IC202,2 with the door IC201B-IC201C be added to driving tube M207～M208, driving tube M207～M208 opens 4 electronic switch M201～M204 again.
Claims (1)
1. back-up source commutation circuit plate that is used for Anesthesia machine, it is characterized in that, MOSFET pipe M201～M206 by 6 electronic switch P raceway grooves, 2 N-channel MOS FET pipe M207～M208,2 and a door IC201B-201C, an analog switch IC202,2 diode D201-D202,2 capacitor C 201-C201 and several resistance are formed, working power+the 6V that is provided by power supply is connected on the D end of M201, the D end that just terminates at M204 of reserve battery output, load is connected on M202, the D end of M203, control signal is through IC202,2 with the door IC201B-IC201C be added to driving tube M207～M208, driving tube M207～M208 opens 4 electronic switch M201～M204 again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420082475 CN2742653Y (en) | 2004-09-02 | 2004-09-02 | Back up power switch circuit board for anaesthesia machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420082475 CN2742653Y (en) | 2004-09-02 | 2004-09-02 | Back up power switch circuit board for anaesthesia machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2742653Y true CN2742653Y (en) | 2005-11-23 |
Family
ID=35478118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420082475 Expired - Lifetime CN2742653Y (en) | 2004-09-02 | 2004-09-02 | Back up power switch circuit board for anaesthesia machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2742653Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1832295B (en) * | 2005-02-14 | 2011-10-05 | 通用电气公司 | Method and system for providing auxiliary power for anesthesia delivery and patient monitoring |
-
2004
- 2004-09-02 CN CN 200420082475 patent/CN2742653Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1832295B (en) * | 2005-02-14 | 2011-10-05 | 通用电气公司 | Method and system for providing auxiliary power for anesthesia delivery and patient monitoring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140902 Granted publication date: 20051123 |