CN202798664U - Exclusive-OR gate reverse connection protection system - Google Patents
Exclusive-OR gate reverse connection protection system Download PDFInfo
- Publication number
- CN202798664U CN202798664U CN 201220424256 CN201220424256U CN202798664U CN 202798664 U CN202798664 U CN 202798664U CN 201220424256 CN201220424256 CN 201220424256 CN 201220424256 U CN201220424256 U CN 201220424256U CN 202798664 U CN202798664 U CN 202798664U
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- integrated chip
- exclusive
- xor gate
- connection protection
- gate integrated
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Abstract
The utility model discloses an exclusive-OR gate reverse connection protection system. The exclusive-OR gate reverse connection protection system is characterized by consisting of an exclusive-OR gate integrated chip U1, an exclusive-OR gate integrated chip U2, a resistor R1 connected with the input ends of the exclusive-OR gate integrated chip U1 and the exclusive-OR gate integrated chip U2 and a reverse connection protection circuit connected with the exclusive-OR gate integrated chip U1 in parallel, wherein the exclusive-OR gate integrated chip U1 and the exclusive-OR gate integrated chip U2 are connected mutually. The exclusive-OR gate reverse connection protection system is very simple in whole structure and very low in manufacture cost and maintenance cost. In addition, the defect that a traditional exclusive-OR gate circuit has no a reverse connection protection function universally can be further overcome thoroughly.
Description
Technical field
The utility model relates to a kind of circuit structure, specifically refers to a kind of XOR gate reverse connecting protection system.
Background technology
At present, people can use various electronic equipments in life, and all have NOR gate circuit in the most electronic equipment, with by identify height, end level comes electronic equipment is controlled.But present NOR gate circuit does not on the market all have reversal connection protection function, and therefore when the unexpected appearance of external power supply level conversion of the high end, its peak value can produce larger impact to NOR gate circuit, and then affects its recognition effect.
The utility model content
The purpose of this utility model is to overcome the defective that present NOR gate circuit does not have reversal connection protection function, provides a kind of simple in structure, has a kind of XOR gate reverse connecting protection system of good reversal connection protection function.
The utility model is achieved through the following technical solutions: a kind of XOR gate reverse connecting protection system; mainly by two interconnective XOR gate integrated chip U1 and XOR gate integrated chip U2; the resistance R 1 that all is connected with the input of XOR gate integrated chip U1 and XOR gate integrated chip U2, and form with reverse-connection protection circuit that XOR gate integrated chip U1 is in parallel.
Further; described reverse-connection protection circuit is by an end and the input of XOR gate integrated chip U1 is connected, the other end is connected with the output of XOR gate integrated chip U1 after diode D3, relay K fuse F; and the diode D4 that is in parallel with relay K forms, and the normally opened contact of described relay K then is connected in series mutually with resistance R 3.
In order to realize preferably the utility model, the resistance of described resistance R 1 is 4.7 K Ω.
The utility model compared with prior art has the following advantages and beneficial effect:
(1) not only overall structure is very simple for the utility model, and its cost of manufacture and maintenance cost are very cheap, and the utility model can also thoroughly solve the ubiquitous defective that does not have reversal connection protection function of traditional NOR gate circuit.
(2) performance of the present utility model is highly stable, is convenient to make and use.
Description of drawings
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Figure 1, XOR gate reverse connecting protection of the present utility model system mainly is comprised of XOR gate integrated chip U1, XOR gate integrated chip U2, resistance R 1 and reverse-connection protection circuit.Wherein, resistance R 1 is connected with the input of XOR gate integrated chip U2 with XOR gate integrated chip U1 respectively, and reverse-connection protection circuit then is in parallel with this XOR gate integrated chip U2.
As shown in the figure; this reverse-connection protection circuit is then by an end and the fuse F that the input of XOR gate integrated chip U1 is connected, the other end is connected with the output of XOR gate integrated chip U1 after diode D3, relay K, and forms with diode D4 that relay K is in parallel.
Can in time disconnect when level suddenlys change in order to ensure reverse-connection protection circuit, so this resistance R 1 also needs to be connected in series mutually with the normally opened contact of relay K; Simultaneously, the resistance of this resistance R 1 preferentially is adopted as 4.7 K Ω.
As mentioned above, just can realize preferably the utility model.
Claims (3)
1. XOR gate reverse connecting protection system; it is characterized in that; mainly by two interconnective XOR gate integrated chip U1 and XOR gate integrated chip U2; the resistance R 1 that all is connected with the input of XOR gate integrated chip U1 and XOR gate integrated chip U2, and form with reverse-connection protection circuit that XOR gate integrated chip U1 is in parallel.
2. a kind of XOR gate reverse connecting protection according to claim 1 system; it is characterized in that; described reverse-connection protection circuit is by an end and the input of XOR gate integrated chip U1 is connected, the other end is connected with the output of XOR gate integrated chip U1 after diode D3, relay K fuse F; and the diode D4 that is in parallel with relay K forms, and the normally opened contact of described relay K then is connected in series mutually with resistance R 1.
3. a kind of XOR gate reverse connecting protection according to claim 2 system, it is characterized in that: the resistance of described resistance R 1 is 4.7 K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220424256 CN202798664U (en) | 2012-08-25 | 2012-08-25 | Exclusive-OR gate reverse connection protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220424256 CN202798664U (en) | 2012-08-25 | 2012-08-25 | Exclusive-OR gate reverse connection protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202798664U true CN202798664U (en) | 2013-03-13 |
Family
ID=47825833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220424256 Expired - Fee Related CN202798664U (en) | 2012-08-25 | 2012-08-25 | Exclusive-OR gate reverse connection protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202798664U (en) |
-
2012
- 2012-08-25 CN CN 201220424256 patent/CN202798664U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20130825 |