CN102419568A - Input circuit and input device - Google Patents
Input circuit and input device Download PDFInfo
- Publication number
- CN102419568A CN102419568A CN2011102883053A CN201110288305A CN102419568A CN 102419568 A CN102419568 A CN 102419568A CN 2011102883053 A CN2011102883053 A CN 2011102883053A CN 201110288305 A CN201110288305 A CN 201110288305A CN 102419568 A CN102419568 A CN 102419568A
- Authority
- CN
- China
- Prior art keywords
- input
- mentioned
- input terminal
- fet
- 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.)
- Granted
Links
Images
Landscapes
- Electronic Switches (AREA)
- Logic Circuits (AREA)
Abstract
The invention relate to an input circuit which is used to input a leakage signal and a source signal from an external device and an input device. The input device is provided with the input circuit. When a mode corresponding to the leakage input is selected by a DIP switch, a control device turns off a p type MOSFET and turns on an n type MOSFET. When an operator connects an external power supply with a second input terminal by mistake, a big current passes through the n type MOSFET. When a current bigger than a rated current passes through an FET, a fuse is cut off immediately, so the FET can be not damaged. When a mode corresponding to the source input is selected by the DIP switch, the p type MOSFET is turned on and the n type MOSFET is turned off. The input current can be switched into the leakage type or the source type without replacing a bottom plate.
Description
Technical field
The present invention relates to a kind of from external unit input leakage type signal or the input circuit of source type signal and input media with this input circuit.
Background technology
Generally speaking, the numerical control device of lathe possesses output circuit and input circuit.Output circuit is to the external unit output signal that can be connected with lathe.From external unit to the input circuit input signal.When the input/output signal of external apparatus is source type signal, in numerical control device, use and the corresponding imput output circuit of source type.When the input/output signal of external apparatus is leakage type signal, in numerical control device, use and the corresponding imput output circuit of leakage type.The operator changes the imput output circuit of numerical control device so that the type of the imput output circuit of numerical control device is consistent with the type of the input/output signal of external unit.
The numerical control device that can change imput output circuit portion is disclosed in No. the 3700315th, Japan special permission communique.Numerical control device possesses fixing base and loading and unloading substrate.The loading and unloading substrate can be installed on fixing base and unload from fixing base.Fixing base possesses control part.The loading and unloading substrate possesses the imput output circuit portion of terminal base, leakage type or source type.
The control part of said fixing substrate is shared in the imput output circuit portion of leakage type and source type.Numerical control device is changed loading and unloading substrate that possesses leakage type imput output circuit portion and the loading and unloading substrate that possesses source type imput output circuit portion, comes corresponding with the input/output signal of external unit.
The operator need prepare two kinds of loading and unloading substrates in advance.In this case, the manufacturing expense of numerical control device increases.In the time will loading and unloading substrate and switch to leakage type or source type, need change operation.To the switching of leakage type or source type and be not easy.
For fear of the replacing of substrate, can utilize the on/off of on-off element that input terminal is switched to leakage type or source type.When external unit is connected to input circuit, the operator with external unit be connected with the corresponding input terminal of this external unit.When the operator had been unfamiliar with the corresponding relation of the input terminal that connected operation or operator's wrong identification and external unit, the operator may be connected to external power source the input terminal of the ground connection through on-off element.
Under the state of having connected on-off element, when the operator was connected to input terminal with external power source, big electric current flow through on-off element.When having flow through the electric current of the capacity that surpasses on-off element, on-off element will damage.
The input media that the object of the present invention is to provide a kind of input circuit and possess this input circuit; When input terminal being switched to leakage type or source type, need not change substrate, when power supply is connected to input terminal by error, can prevent the damage of on-off element.
Summary of the invention
The scheme that is used to deal with problems
First invention of this case relates to a kind of input circuit; From first input end of leakage type or the second input terminal input signal of source type; It is characterized in that; Possess selection portion, above-mentioned first input end or above-mentioned second input terminal are selected by this selection portion, between above-mentioned first input end and power supply unit, are connected in parallel to first resistance and first on-off element; The fuse that between above-mentioned second input terminal and grounding parts, is connected with parallel circuit and is connected in series with this parallel circuit; This parallel circuit is the parallel circuit of second resistance and second switch element, when utilizing above-mentioned selection portion to select the above-mentioned first input end period of the day from 11 p.m. to 1 a.m, above-mentioned first on-off element is broken off and makes above-mentioned second switch element switches; When utilizing above-mentioned selection portion to select above-mentioned second input terminal, above-mentioned first on-off element is connected and above-mentioned second switch element is broken off.
The input circuit of first invention is utilizing selection portion to select the first input end period of the day from 11 p.m. to 1 a.m, makes the disconnection of first on-off element and makes the second switch element switches.When with the other end side joint ground of fuse, second input terminal is via second switch element and fuse ground connection.When by error external power source being connected to second input terminal, big electric current flows through the second switch element, and fuse cuts off at once.Therefore, input circuit can prevent the damage of second switch element.
When utilizing selection portion to select second input terminal, input circuit is connected first on-off element and the second switch element is broken off.Therefore, when input terminal being switched to leakage type or source type, need not carry out complicated operations.Owing to use fuse, compare when therefore cutting off the IC (integrated circuit) of electric current with use, can cut down the manufacturing expense of input circuit.
Second invention of this case is in first invention; Also possesses control device; This control device has and is used for from the port of the above-mentioned second input terminal input signal and controls switching on and off of above-mentioned first on-off element and switching on and off of above-mentioned second switch element, and above-mentioned control device detects the cut-out of above-mentioned fuse according to the signal from above-mentioned port input.
The input circuit of second invention utilizes selection portion to select the first input end period of the day from 11 p.m. to 1 a.m under the state with the other end side joint ground of fuse, the second switch element switches.Second input terminal is via second switch element and fuse ground connection.Second input terminal is connected with control device." L " signal to control device input electronegative potential.When the operator was connected to second input terminal with power supply by error, big electric current flow through, and fuse cuts off.The ground connection of second input terminal is removed, from second input terminal " H " signal to control device input noble potential.
Because of the cut-out of fuse 92 makes the input signal from second input terminal become " H " from " L ", so control device detects excess current and has flow through the second switch element.
When utilizing selection portion to select second input terminal, import perhaps " L " signal of " H " signal to control device from second input terminal.Can utilize same structure to realize detection, therefore can not make the input circuit complicacy that becomes from the excess current of input of the signal of second input terminal and second switch element.
The 3rd invention of this case and the 4th invention are in first invention and second invention, can change above-mentioned fuse.
The input circuit of the 3rd invention and the 4th invention is changed the fuse that has cut off, recovers input circuit apace.
The 5th invention of this case to the 8th invention is that above-mentioned first on-off element and above-mentioned second switch element are FET in first invention is invented to the 4th.
Therefore the input circuit of the 5th invention to the 8th invention realizes the switching of input terminal to leakage type or source type reliably owing to use FET (field effect transistor) as first on-off element and second switch element.
The 9th invention of this case relates to a kind of input media, it is characterized in that, possesses each described input circuit and other input circuit in one first invention to the 8th invention, and above-mentioned other input circuit has: the 3rd input terminal of leakage type; Four-input terminal of source type; Selection mechanism, it selects above-mentioned the 3rd input terminal or above-mentioned four-input terminal; The 3rd resistance and the 3rd on-off element, they are connected in parallel between above-mentioned the 3rd input terminal and the power supply unit; And the 4th resistance and the 4th on-off element; They form parallel circuit; This parallel circuit is connected between above-mentioned four-input terminal and the grounding parts via fuse, when utilizing above-mentioned selection mechanism to select above-mentioned the 3rd input terminal, above-mentioned the 3rd on-off element is broken off and above-mentioned the 4th on-off element is connected; When utilizing above-mentioned selection mechanism to select the above-mentioned four-input terminal period of the day from 11 p.m. to 1 a.m, make above-mentioned the 3rd on-off element connect and make above-mentioned the 4th on-off element disconnection.
The input media of the 9th invention is made as the structure that except that an input circuit other input circuit does not possess fuse when using a plurality of input circuit.The 4th resistance of other input circuit and the 4th on-off element be via the fuse ground connection of an input circuit, therefore can shared fuse, cut down manufacturing expense.When flowing through excess current in the second switch element of any input circuit, fuse cuts off.Input media utilizes a fuse to protect the second switch element of each input circuit.Input media detects in some input circuits and has flow through excess current in the second switch element.
Description of drawings
Fig. 1 is the input circuit figure of embodiment 1.
Fig. 2 is the constitutional diagram of the DIP switch of each pattern.
Fig. 3 is the circuit diagram when in leakage type input associative mode, external power source being connected to second input terminal by error.
Fig. 4 is the circuit diagram of the input media of embodiment 2.
Embodiment
Fig. 1 is the input circuit figure of embodiment 1.Input circuit 1 is located in the numerical control device of lathe, is installed on the not shown substrate.Input circuit 1 possesses control device 10, and (Dual In-line Package: dual-in-line package) switch 70 (selection portion) is connected with terminal base 11 this control device 10 with DIP.In the drawings DIP switch is expressed as DIP SW.
Field programmable gate array), ASIC (Application Specific Integrate d Circuit: special IC) or microcomputer control device 10 for example possesses FPGA (Field Programmable Gate Arr ey:.Control device 10 possesses input port 61,62 and output port 63,64.Control device 10 state after controlling based on the selection of DIP switch 70 to FET (Field Effect Transistor: driving field effect transistor).Control device 10 moves with the signal of 3.3V system.
The FET 31 and first resistance 41 are connected in parallel between power supply 91 and first input end 21.Power supply 91 protection FET 31 avoid the influence of excess current, and the voltage of 24V is provided.External unit moves with the signal of 24V system.
The grid of FET 32 is connected with the output port 64 of control device 10.The drive signal of output port 64 output FET 32.
Terminal base 11 possesses a plurality of ports.Configuration first input end 21 and second input terminal 22 on each port.
Shown in the A of Fig. 2, when the operator was set at connection with DIP switch 70, input circuit 1 became leakage type input associative mode.When DIP switch 70 being set at disconnection, input circuit 1 becomes source type input associative mode.
When leakage type input associative mode, control device 10 makes FET 31 end, make the gate turn-on of FET32.Power supply 91 and first input end 21 is connected via first resistance 41.Always import " L " signal (signal of 0V) (with reference to the B of Fig. 2) of electronegative potential to control device 10 from second input terminal 22.Second input terminal 22 provides the voltage of 0V.
When first input end 21 is connected with external unit with second input terminal 22, when the internal switch connection of external unit and first input end 21 are connected with second input terminal 22, second input terminal 22 is a low level.Import " L " signals from first input end 21 to control device 10.When the internal switch of external unit breaks off and when cutting off first input end 21 and second input terminal 22, first input end 21 is applied utilize the supply voltage that draws on first resistance 41.From first input end 21 " H " signal to control device 10 input noble potentials.First input end 21 becomes leakage type input terminal (with reference to the B of Fig. 2).
In the source during type input associative mode, control device 10 make FET 31 gate turn-on, the grid of FET 32 is ended.Power supply 91 directly is connected with first input end 21.Always import " H " signal (signal of 24V) (with reference to the B of Fig. 2) from first input end 21 to control device 10.First input end 21 provides supply voltage (24V).Second input terminal 22 is via second resistance, 42 ground connection.
When first input end 21 was connected with second input terminal 22 when external unit and first input end 21 is connected with second input terminal 22, the internal switch of external unit is connected, first input end 21 was a noble potential.From second input terminal 22 " H " signal to control device 10 input noble potentials.When the internal switch of external unit breaks off and when cutting off first input end 21 and second input terminal 22; Input utilizes the drop-down earthing potential of second resistance 42 to second input terminal 22, from second input terminal 22 " L " signal to control device 10 input electronegative potentials.Second input terminal 22 becomes source type input terminal (with reference to the B of Fig. 2).
First change-over circuit 51 will convert into and control device 10 corresponding voltages (3.3V) from first input end 21 " H " signal (voltage) to control device 10 inputs.Second change-over circuit 52 will convert into and control device 10 corresponding voltages (3.3V) from second input terminal 22 " H " signal (voltage) to control device 10 inputs.
As stated, when leakage type input associative mode, FET 32 conductings, second input terminal 22 is via FET 32 and fuse 92 ground connection.Import " L " signals from second input terminal 22 to control device 10.When the operator was connected to second input terminal 22 with external power source 80 (with reference to Fig. 3) by error, big electric current can flow to FET 32 and fuse 92 (with reference to the dotted arrow of Fig. 3) from second input terminal 22.Fuse 92 is to compare fully little failure of current with the rated current of FET 32.As shown in Figure 3, when from second input terminal 22 when FET 32 has imported than the bigger electric current of rated current, fuse 92 cuts off at once, FET 32 can not damage.
Import high voltages from external power source 80 to second input terminal 22 through the cut-out of fuse 92.The current potential of second input terminal 22 raises.Import " H " signals from second input terminal 22 to control device 10.When second input terminal 22 has been imported " H " signal, control device 10 detects fuse 92 and cuts off (FET 32 has been imported excess current).When detecting fuse 92 cut-outs, control device 10 drives lamp or hummer untill further notice devices, impels the operator to change fuse 92.
When first input end 21 ground connection under source type input associative mode, big electric current flows through FET 31.Power supply 91 protection FET 31 avoid the influence of excess current.For example power supply 91 possesses power protecting circuit.When the electric current bigger than rated current flow through FET 31, power supply 91 cut off the current supply to FET 31 immediately.
When utilizing DIP switch 70 to select leakage type input associative mode, input circuit 1 makes FET 31 end, make FET 32 conductings.When the operator was connected to second input terminal 22 with external power source 80 by error, big electric current flow through FET 32.When the electric current bigger than rated current flow through FET 32, fuse 92 cut off at once.Therefore, FET 32 can not damage.When utilizing DIP switch 70 to select source type input associative mode, make FET 31 conductings, FET 32 is ended.The operator utilizes DIP switch 70 that input circuit 1 is switched to leakage type or source type.The operator need not change substrate.
When utilizing DIP switch 70 to select leakage type input associative mode and by error external power source 80 being connected to second input terminal 22, fuse 92 cuts off.Before fuse 92 cuts off, second input terminal, 22 ground connection." L " signal to control device 10 input electronegative potentials.After fuse 92 cut off, the ground connection of second input terminal 22 was removed." H " signal to control device 10 input noble potentials.Become " H " because of the cut-out of fuse 92 from " L " from the input signal of second input terminal 22.Therefore, control device 10 detects excess current and has flow through FET 32.
When utilizing DIP switch 70 to select source type input associative mode, second input terminal 22 is connected with control device 10.Import perhaps " L " signal of " H " signals from second input terminal 22 to control device 10.Realize from the input of the signal of second input terminal 22 and the detection of the excess current among the FET 32 with identical structure.Therefore, input circuit 1 becomes simple.Through being changed, the fuse 92 that has cut off can recover input circuit 1 apace.Fuse 92 also can be fixed on the substrate.At this moment, change fuse 92 through changing substrate.
Can also (for example IPD (Integrated Product Development: integrated product development)) be connected between FET 32 and the earth terminal and prevents excess current, detects the signal of excess current to control device 10 output expression from IC with IC.At this moment, need to connect the wiring of IC and control device 10.
When using than the more cheap fuse 92 of IC, can utilize the existing wiring that connects second input terminal 22 and control device 10, therefore do not need new wiring.
Embodiment 2
As shown in Figure 4, input media 100 possesses first input circuit (input circuit) 1a and second input circuit (another input circuit) 1b.The first input circuit 1a is identical with the input circuit 1 of embodiment 1.The second input circuit 1b possesses control device 80, and this control device 80 is connected with terminal base 110 with DIP switch 90 (selection mechanism).
Input circuit 1b possesses the 3rd input terminal 23, p type MO SFET 33 (the 3rd on-off element, below be called FET 33), the 3rd resistance 43 and the 3rd change-over circuit 53.The 3rd input terminal 23 is connected with external unit.FET 33 is connected with the 3rd input terminal 23 with power supply 93 (power supply unit).The 3rd resistance 43 is connected between power supply 93 and the 3rd input terminal 23.53 pairs of voltages of the 3rd change-over circuit are changed.
The 3rd input terminal 23 is connected with the input port 81 of control device 80 via the 3rd change-over circuit 53.The 3rd input terminal 23 is connected with the drain electrode of FET 33.The source electrode of FET 33 is connected with power supply 93.The grid of FET 33 is connected with the output port 83 of control device 80.The drive signal of output port 83 output FET 33.
Input circuit 1b possesses four-input terminal 24, n type MOSFET 34 (the 4th on-off element, below be called FET 34), the 4th resistance 44 and the 4th change-over circuit 54.
Four-input terminal 24 is connected with external unit.Four-input terminal 24 is connected with the drain electrode of FET 34.An end of the 4th resistance 44 is connected with four-input terminal 24.54 pairs of voltages of the 4th change-over circuit are changed.
Four-input terminal 24 is connected with the input port 82 of control device 80 via the 4th change-over circuit 54.The source electrode of FET 34 is via fuse 92 ground connection of the first input circuit 1a.Another end of the 4th resistance 44 is via fuse 92 ground connection.
The grid of FET 34 is connected with the output port 84 of control device 80.The drive signal of output port 84 output FET 34.Terminal base 110 possesses a plurality of ports.Configuration the 3rd input terminal 23 and four-input terminal 24 on each port.
When utilizing DIP switch 90 to select, the action of input circuit 1b is identical with the input circuit 1 of embodiment 1, therefore omits detailed explanation.
When the DIP switch 90 of the DIP switch that utilizes the first input circuit 1a 70 and the second input circuit 1b had been selected leakage type input associative mode and by error external power source has been connected to second input terminal 22 or four-input terminal 24, fuse 92 cut off.Before fuse 92 cuts off, second input terminal 22 and four-input terminal 24 ground connection.From second input terminal 22 " L " signal to control device 10 input electronegative potentials.From four-input terminal 24 " L " signal to control device 80 input electronegative potentials.After fuse 92 cut off, the ground connection of second input terminal 22 and four-input terminal 24 was removed.Import high voltages from external power source to second input terminal 22 and four-input terminal 24.From second input terminal 22 " H " signal to control device 10 input noble potentials.From four-input terminal 24 " H " signal to control device 80 input noble potentials.Become " H " because of the cut-out of fuse 92 from " L " from the input signal of second input terminal 22 and four-input terminal 24, so each control device 10,80 detects excess current and flows through FET 32 or FET 34.
About input media 100, the source electrode of another end and FET 34 that makes the 4th resistance 44 is via fuse 92 ground connection of the first input circuit 1a.The second input circuit 1b does not need special-purpose fuse.When excess current flow through FET 32 or FET 34, fuse 92 cut off, and can utilize a fuse 92 to protect FET 32 and FET 34.Input media 100 is kept watch on the input signal of second input terminal 22 and four-input terminal 24, and detection of excessive current flows through the situation of FET 32 or FET 34.
The operation voltage of control device 80 and external unit is not limited to 3.3V, 24V.The 3rd change-over circuit 53 and the 4th change-over circuit 54 are suitably changed the operation voltage of external unit and control device 80.
In the structure of the input media 100 of embodiment 2, to attaching with identical Reference numeral, and omit its detailed explanation with embodiment 1 identical structure.
Claims (9)
1. an input circuit from first input end of leakage type or the second input terminal input signal of source type, is characterized in that,
Possess selection portion, above-mentioned first input end or above-mentioned second input terminal are selected by this selection portion,
Between above-mentioned first input end and power supply unit, be connected in parallel to first resistance and first on-off element,
The fuse that between above-mentioned second input terminal and grounding parts, is connected with parallel circuit and is connected in series with this parallel circuit, this parallel circuit are the parallel circuits of second resistance and second switch element,
Selected the above-mentioned first input end period of the day from 11 p.m. to 1 a.m when utilizing above-mentioned selection portion; Make above-mentioned first on-off element disconnection and make above-mentioned second switch element switches; When utilizing above-mentioned selection portion to select above-mentioned second input terminal, above-mentioned first on-off element is connected and above-mentioned second switch element is broken off.
2. input circuit according to claim 1 is characterized in that,
Also possess control device, this control device has and is used for from the port of the above-mentioned second input terminal input signal and controls switching on and off of above-mentioned first on-off element and switching on and off of above-mentioned second switch element,
Above-mentioned control device detects the cut-out of above-mentioned fuse according to the signal from above-mentioned port input.
3. input circuit according to claim 1 is characterized in that,
Can change above-mentioned fuse.
4. input circuit according to claim 2 is characterized in that,
Can change above-mentioned fuse.
5. input circuit according to claim 1 is characterized in that,
Above-mentioned first on-off element and above-mentioned second switch element are FET.
6. input circuit according to claim 2 is characterized in that,
Above-mentioned first on-off element and above-mentioned second switch element are FET.
7. input circuit according to claim 3 is characterized in that,
Above-mentioned first on-off element and above-mentioned second switch element are FET.
8. input circuit according to claim 4 is characterized in that,
Above-mentioned first on-off element and above-mentioned second switch element are FET.
9. an input media is characterized in that,
Possess one according to each the described input circuit in the claim 1 to 8 and other input circuit,
Above-mentioned other input circuit has:
The 3rd input terminal of leakage type;
Four-input terminal of source type;
Selection mechanism, it selects above-mentioned the 3rd input terminal or above-mentioned four-input terminal;
The 3rd resistance and the 3rd on-off element, they are connected in parallel between above-mentioned the 3rd input terminal and the power supply unit; And
The 4th resistance and the 4th on-off element, they form parallel circuit, and this parallel circuit is connected between above-mentioned four-input terminal and the grounding parts via fuse,
When utilizing above-mentioned selection mechanism to select above-mentioned the 3rd input terminal; Make above-mentioned the 3rd on-off element disconnection and above-mentioned the 4th on-off element is connected; When utilizing above-mentioned selection mechanism to select the above-mentioned four-input terminal period of the day from 11 p.m. to 1 a.m, make above-mentioned the 3rd on-off element connect and make above-mentioned the 4th on-off element disconnection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-214193 | 2010-09-24 | ||
| JP2010214193A JP5459161B2 (en) | 2010-09-24 | 2010-09-24 | Input circuit and input device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102419568A true CN102419568A (en) | 2012-04-18 |
| CN102419568B CN102419568B (en) | 2014-08-13 |
Family
ID=45944015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110288305.3A Active CN102419568B (en) | 2010-09-24 | 2011-09-23 | Input circuit and input device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5459161B2 (en) |
| CN (1) | CN102419568B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896775A (en) * | 2015-12-21 | 2017-06-27 | 施耐德电气工业公司 | For the output circuit of programmable logic controller (PLC) |
| CN112596462A (en) * | 2020-12-22 | 2021-04-02 | 深圳市英威腾电气股份有限公司 | Output method, device and system based on signal type |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498547A (en) * | 2022-01-11 | 2022-05-13 | 深圳市有为信息技术发展有限公司 | Configurable CAN terminal resistor matching circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0738408A (en) * | 1993-07-19 | 1995-02-07 | Sharp Corp | Buffer circuit |
| JP4133646B2 (en) * | 2003-07-29 | 2008-08-13 | サンクス株式会社 | Signal output circuit, detection switch and multi-optical axis photoelectric switch |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3564920B2 (en) * | 1997-03-07 | 2004-09-15 | 三菱電機株式会社 | Control unit interface circuit |
| JP3767625B2 (en) * | 2005-02-10 | 2006-04-19 | 三菱電機株式会社 | Control board |
| JP4807431B2 (en) * | 2009-03-30 | 2011-11-02 | ブラザー工業株式会社 | Input interface circuit |
-
2010
- 2010-09-24 JP JP2010214193A patent/JP5459161B2/en active Active
-
2011
- 2011-09-23 CN CN201110288305.3A patent/CN102419568B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0738408A (en) * | 1993-07-19 | 1995-02-07 | Sharp Corp | Buffer circuit |
| US5821783A (en) * | 1993-07-19 | 1998-10-13 | Sharp Kabushiki Kaisha | Buffer circuits with changeable drive characteristic |
| JP4133646B2 (en) * | 2003-07-29 | 2008-08-13 | サンクス株式会社 | Signal output circuit, detection switch and multi-optical axis photoelectric switch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896775A (en) * | 2015-12-21 | 2017-06-27 | 施耐德电气工业公司 | For the output circuit of programmable logic controller (PLC) |
| CN112596462A (en) * | 2020-12-22 | 2021-04-02 | 深圳市英威腾电气股份有限公司 | Output method, device and system based on signal type |
| CN112596462B (en) * | 2020-12-22 | 2022-04-22 | 深圳市英威腾电气股份有限公司 | Output method, device and system based on signal type |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102419568B (en) | 2014-08-13 |
| JP5459161B2 (en) | 2014-04-02 |
| JP2012070266A (en) | 2012-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10892624B2 (en) | Method and apparatus for connecting a plurality of battery cells in series or parallel | |
| KR20200080143A (en) | Protection circuit | |
| EP0442688A2 (en) | Switching circuit | |
| TWI511416B (en) | Control circuit and method of battery branch in battery system | |
| CN102436218B (en) | Output circuit and output device | |
| CN107852159B (en) | Drive device | |
| CN101931321B (en) | Power conversion circuit | |
| US10211826B2 (en) | Electronic switch, and corresponding device and method | |
| EP1646148A2 (en) | Switching device and protection circuit using the same | |
| CN103683471A (en) | Apparatus and method for power switching in electronic device | |
| CN102419568B (en) | Input circuit and input device | |
| CN1574535B (en) | Electronic device, and circuit and method for protecting the same | |
| CN105575960A (en) | Method and circuitry for on-chip electro-static discharge protection scheme | |
| US20090108910A1 (en) | Very low power consumption solid state relay | |
| US7800249B1 (en) | Power supply system | |
| CN104145401A (en) | Control module for an electrical energy accumulator, energy accumulator unit having such a control module, uninterruptible power supply unit and method for operating a control module | |
| CN104199535A (en) | Digital power supply device and method | |
| CN104836558B (en) | The high-speed switch of isolation | |
| JP5383353B2 (en) | Rapid discharge circuit when abnormality is detected | |
| CN112133238B (en) | Drive circuit and electronic device | |
| US7102252B2 (en) | Multi-function solid-state switch | |
| US20180351344A1 (en) | Drive circuit | |
| US20060245122A1 (en) | Electrical load switch | |
| JP2006121187A (en) | Semiconductor switching circuit | |
| CN102810849B (en) | Undervoltage protection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |