TWI722518B - SWITCHING AC/DC POWER SUPPLY SYSTEM WITH 10 MHz TIME BASE - Google Patents

Abstract

A switching AC/DC power supply system with 10 MHz time base includes a master and at least one slave, each of which has a time base generator, and the time base generators can provide a time base of 10 MHz. Wherein the slave has a selection switch, and when the master is coupled to the slave, the slave can use the selection switch to obtain a time base from the time base generator of the master, thereby enabling the time base of the slave is fully synchronized with the master, thereby improving the power output quality of the switching mode AC/DC power supply system.

Description

Switching AC and DC power supply system with 10MHz time base

The present invention is related to AC and DC power supplies, especially a switching AC and DC power supply system with a 10MHz time base.

At present, AC and DC power supplies are classified into Linear AC/DC Power Supply and Switching AC/DC Power Supply according to their working principle and design structure. The basic structure of the sexual AC and DC power supply is that the first quadrant is DC, the first and fourth quadrants are AC linear amplifiers and bipolar DC power supplies. If DC bidirectional is involved, it is the first and second quadrants, linear Amplifiers generally have A, B, AB, etc., and use the linear region of power components. As for the basic working quadrants of switching AC and DC power supplies, it is the same as that of linear AC and DC power supplies. However, Class D amplifiers are the mainstream, and Class D amplifiers are used as the switching mode, which has the advantage of high efficiency. The advancement of gap semiconductor (WBG) and the popularity of silicon carbide (SiC) and gallium nitride (GaN) power devices have further improved the switching action. The biggest difference between a linear amplifier and a switching amplifier is that the former uses the linear region of the power element, while the latter is just a simple switching action. Since the linear amplifier does not involve the switching action, it is completely different from the switching amplifier when it is in multiple groups or multiple units.

Since the switching amplifier is a switching action, it must have a frequency relationship, and the switching frequency is also determined by power components. For example, the switching frequency of insulated gate bipolar transistors (IGBT) is mostly less than 20KHz. ) The switching frequency is about 30KHz~100KHz, and the switching frequency of SiC-MOSFET is greater than 100KHz. It can be seen that the difference in the operating frequency of the above-mentioned various components is due to the characteristics of the material itself, due to the power The operating frequency of the component is limited, so phase-shifting methods can be adopted to solve the above problems. In addition, the switching action must involve frequency. When multiple groups or multiple switching amplifiers are connected in parallel, the switching frequency must pay attention to the phase relationship to establish a complete frequency. Domain and time domain relationship. In addition, if the switching frequency can be synchronized, the electromagnetic interference (EMI) filtering can be well grasped. When multiple groups of switching power supplies work at the same potential, synchronization or frequency multiplication and reverse phase relationships are also the same purpose. After the phase is out of phase, multiple units are connected in parallel, and it is necessary to construct a phase relationship. Obviously, in the structure of linear power supplies in the past, time base, timing, and phase are not included in the necessary considerations, but switching power supplies are the opposite. In addition to the above-mentioned advantages of using the stagger technology to increase the equivalent operating frequency, there are also the following advantages: 1. A lower frequency can be used to synthesize a power supply with high frequency effects. 2. The equivalent frequency is high, and the subsequent ripple frequency also increases. 3. The reaction is faster and the current density is also improved. 4. For the previous stage, the pulsating current is also reduced, thereby improving the durability of the previous stage.

Both AC and DC power supplies can be achieved by linear structure and switch structure. If necessary, it can also be a hybrid structure composed of switch structure and linear structure. In short, all power supplies that use switching actions must use a common time base and give timing. Relations, as functions of synchronization, frequency multiplication, inversion, and error.

As for the time base (Time Base), it is the time reference for all analog and digital devices to process frequency or time domain calculations, such as radio transmitters and receivers, high and low frequency signal generators, frequency counters, Spectrum analyzers, oscilloscopes, power analyzers, etc., and even the switching power supply mentioned above, all need the time base as a reference. If the time base is not accurate enough, it is a big "time base error" (Jitter). Source, and currently commercially available time-base generators, depending on their accuracy, from low to high include quartz (Quartz), oscillator (OSC), temperature-compensated crystal oscillator (TCXO), oven-controlled crystal oscillator (OCXO) And rubidium atomic clock (Rubidium Atomic Clock), and even satellite positioning system (GPS) can provide the time base required by the above-mentioned various digital devices. At present, the industry generally uses 10MHz for the frequency generated by the time base generator.

In addition, in response to the industry's testing requirements for large-capacity industrial equipment or various products, a large-capacity power supply system will inevitably be required. However, if a single power supply is used to meet the large-capacity demand, the cost is too high. Therefore, currently, multiple power supplies are connected in parallel and the wrong phase method is adopted to achieve the large-capacity and high-frequency demand. In the case of multiple power supplies, if the time base of each power supply cannot be synchronized, it will cause errors in the switching frequency, resulting in electromagnetic interference, and even resonance. Therefore, after observing the above-mentioned shortcomings, the inventor of the present case believes that there is a need for further improvement of the conventional power supply, and thus the present invention was born.

The purpose of the present invention is to provide a switching AC and DC power supply system with a 10MHz time base, which allows the time bases of multiple AC and DC power supplies connected to each other to be fully synchronized, thereby eliminating electromagnetic interference and other problems and reducing output ripple In order to eliminate the frequency error between each station, and then provide high-quality AC and DC power supply.

To achieve the above objective, the switching AC/DC power supply system with 10MHz time base provided by the present invention includes: a host including a time base generator, a time base processing circuit and a connection port, wherein the The time base generator can provide a time base of 10MHz, connected in parallel Connect the time base processing circuit, and the port is connected to the time base generator; at least one slave, the slave also includes a time base generator, a time base processing circuit, a selection switch and a connection port, wherein The time base generator of the slave machine can provide a 10MHz time base, and the time base processing circuit can be connected to the time base generator of the slave machine or the port of the slave machine through the selector switch; at least one connection line can be connected separately The port of the master and the port of the slave are used to connect the master and the slave.

When the slave is connected to the master through the cable and the selector switch is switched to the port, the time base generated by the master's time base generator can be input to the slave through the slave port The time-base processing circuit of the master is connected to the time-base processing circuit of the master and the time-base processing circuit of the slave through the time-base generator of the master, so that the slave and the master can have a synchronized time base, In turn, a high-quality AC and DC power supply with low output ripple rate and less EMI noise can be obtained.

10: host

11: Time base generator

12: Port

121: Input port

122: output port

13: Time base processing circuit

14: Selection switch

141: first contact

142: second contact

143: Third Contact

15: Detection circuit

20: Slave

201: first slave

202: second slave

211: Time Base Generator

221: Port

2211: Input port

2212: output port

212: Time Base Generator

222: Port

2221: Input port

2222: output port

231: Time base processing circuit

241: selector switch

2411: first contact

2412: second contact

2413: third contact

232: Time base processing circuit

242: selector switch

2421: first contact

2422: second contact

2423: third contact

251: Detection Circuit

252: Detection Circuit

30: connection line

301: The first connection line

302: second connection line

306: first connection line

307: second connection line

308: External connection line

31: Tee connector

311: first connector

312: second connector

40: host

42: Port

501: first slave

502: second slave

521: Port

522: Port

60: host

61: Time base generator

62: Port

63: Time base processing circuit

64: selector switch

641: first contact

642: second contact

643: Third Contact

644: Fourth Contact

701: first slave

711: Time Base Generator

721: Port

731: Time base processing circuit

741: selector switch

7411: first contact

7412: second contact

7413: third contact

7414: fourth contact

702: second slave

712: Time Base Generator

722: Port

732: Time Base Processing Circuit

742: Select Switch

7421: first contact

7422: second contact

7423: third contact

7424: fourth contact

80: External device

81: Port

Figure 1 is a block diagram of the first embodiment of the present invention.

Figure 2 is a schematic diagram of the connection port of the first embodiment of the present invention.

Figure 3 is a schematic diagram of the connection port of the second embodiment of the present invention.

Figure 4 is a block diagram of the third embodiment of the present invention.

Figure 5 is a block diagram of the fourth embodiment of the present invention.

Fig. 6 is a schematic diagram of the connection port of the fifth embodiment of the present invention.

Figure 7 is a block diagram of the fifth embodiment of the present invention.

Please refer to Figure 1, which discloses a switching AC and DC power supply system with a 10MHz time base. The system includes: A host 10 can choose to output a DC voltage or convert it to an AC voltage to supply AC and DC power. The host 10 includes: a time base generator 11, which can provide a time base of 10 MHz. The time base generator 11 is a temperature compensated crystal oscillator (TCXO).

A selector switch 14 is a manual switch, one end of which includes a first contact 141 and a second contact 142, and the other end is provided with a third contact 143, wherein the third contact 143 can be connected to the The first contact 141 forms a path, or alternatively, the third contact 143 is connected to the second contact 142 to form a path, and the first contact 141 is connected to the time base generator 11, and the second The contact 142 is connected to an external port. In the first embodiment of the present invention, when the selector switch 14 has no external connection to the second contact 142, the third contact 143 of the selector switch 14 is selectively connected to the first contact 141.

A time base processing circuit 13 is connected to the third contact 143 of the selector switch 14, and can receive the time base of the time base generator 11 or an external time base, and perform the functions of frequency division and frequency division, and then Provide the frequency required by each electronic component or control circuit.

A port 12 is connected to the selector switch 14. In the first embodiment of the present invention, the port 12 of the host 10 further includes an input port 121 and an output port 122, wherein the input port 121 Is connected to the second contact 142 of the selector switch 14, and the output port 122 is connected to the third contact 143 of the selector switch 14. Please refer to Figure 2 for cooperation. The input port 121 is connected to The output port 122 may be an RJ45 port, but this is only an embodiment, and is not a limitation to the implementation of the present invention. The input port 121 and the output port 122 can also be selected as various communication ports such as SMA, BNC, or optical fiber.

At least one slave device 20, in this embodiment, a first slave device 201 is sequentially defined And the second slaves 202, the slaves 20 can choose to output DC voltage or convert to AC voltage to supply AC and DC power. Wherein, the first slave 201 includes: A time base generator 211. The time base generator 211 can provide a 10 MHz time base. The time base generator 211 in this embodiment is a temperature compensated crystal oscillator (TCXO).

A selector switch 241 is a manual switch, one end of which includes a first contact 2411 and a second contact 2412, and the other end is provided with a third contact 2413, wherein the third contact 2413 can be connected to the The second contact 2412 forms a path, or alternatively, the third contact 2413 is connected to the first contact 2411 to form a path. The first contact 2411 of the selector switch 241 is connected to the time base generator 211, so that the third contact 2413 of the selector switch 241 can be selectively switched to form a path with the time base generator 211 or not to form a path. In the first embodiment of the present invention, the selector switch 241 is manually switched to a state where the second contact 2412 can be connected to the third contact 2413.

A time base processing circuit 231 is connected to the third contact 2413 of the selector switch 241 to receive the time base input via the third contact 2413, and perform the functions of frequency division and frequency division, thereby providing various electronic components. The frequency required by the component or control circuit.

A connection port 221 is connected to the selector switch 241. In the first embodiment of the present invention, the connection port 221 of the first slave 201 includes an input connection port 2211 and an output connection port 2212, wherein the input connection The port 2211 is connected to the second contact 2412 of the selector switch 241, and the output port 2212 is connected to the third contact 2413 of the selector switch 241, and can be connected to the time base processing circuit 231 to form a path. That is, the connection port 221 can be switched by the selection switch 241 so that the time base processing circuit 231 is connected to the connection port 221 instead of the time base generator 211. Please refer to Figure 2 for cooperation. The input port 2211 and the output port 2212 are also RJ45 ports.

As for the second slave 202 includes a time base generator 212, the time base generator 212 can provide a 10 MHz time base, the time base generator 212 in this embodiment is a temperature compensated crystal oscillator (TCXO).

A selector switch 242 is an electronic switch, one end of which includes a first contact 2421 and a second contact 2422, and the other end is provided with a third contact 2423, wherein the third contact 2423 can be connected to the The second contact 2422 forms a path, or alternatively, the third contact 2423 is connected to the first contact 2421 to form a path. The first contact 2421 of the selector switch 242 is connected to the time base generator 212, so that the third contact 2423 of the selector switch 242 can be switched to form a path with the time base generator 212 or not to form a path. In the first embodiment of the present invention, the selector switch 242 is manually switched to a state where the second contact 2422 is connected to the third contact 2423.

A time base processing circuit 232 is connected to the third contact 2423 of the selector switch 242 to receive the time base input via the third contact 2423, and perform frequency division and frequency division, and perform frequency division and division The function of frequency, and then provide the frequency required by each electronic component or control circuit.

A connection port 222 is connected to the selector switch 242. In the first embodiment of the present invention, the connection port 222 of the second slave 202 includes an input connection port 2221 and an output connection port 2222, wherein the input connection The port 2221 is connected to the second contact 2422 of the selector switch 242, and the output port 2222 is connected to the third contact 2423 of the selector switch 242, and is connected to the time base processing circuit 232 to form a path, that is, The connection port 222 can be switched by the selection switch 242 so that the time base processing circuit 232 is connected to the connection port 222 instead of the time base generator 212. Please refer to Figure 2 for cooperation. The input port 2221 and the output port 2222 are also RJ45 ports.

At least one connecting wire 30, in this embodiment, a first connecting wire 301 is defined And a second connection line 302, wherein the first connection line 301 can respectively connect the output port 122 of the host 10 and the input port 2211 of the first slave 201 to connect the host 10 and the first slave 201. The second connection line 302 can respectively connect the output port 2212 of the first slave 201 and the input port 2221 of the second slave 202 to connect the first slave 201 and the second slave 202 .

In order to further understand the structural features of the present invention, the technical means used and the expected effects, the present invention will be described in detail. It is believed that a deeper and specific understanding of the present invention can be obtained from this, as follows: When each host, When the slaves are independent of each other and not connected, the master 10 can use the time base provided by the time base generator 11 to allow the master 10 to output a DC voltage or convert it to an AC voltage. At the same time, the first slave 201 and the second slave 202 can also use the time bases provided by their own time base generators 211 and 212 to allow the first slave 201 and the second slave 202 to output the same DC The voltage may be converted to AC voltage, but since the time bases of the master 10 and the slaves 201, 202 are derived from the time bases generated by the respective time base generators 11, 211, and 212, the time bases cannot be synchronized.

When the masters and slaves are connected to each other, please continue to refer to Figure 1. When the first slave 201 is connected to the master 10 through the first connection line 301, the selector switch 14 of the master 10 Select to connect the third contact 143 to the first contact 141, so that the time base generator 11 of the host 10 can connect to the time base processing circuit 13 through the selection switch 14, so that the time base processing circuit 13 can receive the The time base of the time base generator 11 of the host 10 is performed by the time base processing circuit 13 to perform frequency division and frequency division, and can further output the time base of the host 10 through the output port 122 of the host 10. The time base of the master 10 can be input to the time base processing circuit 231 of the first slave 201 through the first connection line 301 and through the input port 2211 of the first slave 201 and the selection switch 241. And because the first connecting line 301 is connected to the first slave 201, the first slave 201 is selected The switch 241 can be manually switched to the third contact 2413 to connect to the second contact 2412, so the time base processing circuit 231 of the first slave 201 can be based on the time generated by the time base generator 11 of the master 10 The base performs frequency division and frequency division, whereby the time base generated by the time base generator 11 of the master 10 is synchronously output to the time base processing circuit 13 of the master 10 and the time base processing of the first slave 201 The circuit 231 allows the first slave 201 and the master 10 to have a synchronized time base.

When the second slave 202 is further connected, the selector switch 242 of the second slave 202 is also switched to the third contact 2423 to connect to the second contact 2422, so that the time base of the master 10 can be further transmitted The second connection line 302 is input to the time base processing circuit 232 of the second slave 202 through the input port 2221 of the second slave 202 and the selection switch 242, so that the time base processing circuit 232 can receive The time base generated by the time base generator 11 of the host 10 further performs frequency division and frequency division through the time base processing circuit 232. When the second connecting line 302 is connected to the second slave 202, the selector switch 242 of the second slave 202 is also manually switched to the third contact 2413 to connect to the second contact 2412, so the second slave 202 The time base processing circuit 232 of 202 also performs frequency division and frequency division according to the time base generated by the time base generator 11 of the host 10, thereby further synchronously outputting to the second slave through the time base of the host 10 The time base processing circuit 232 of the machine 202 allows the second slave machine 202 to have a synchronized time base with the first slave machine 201 and the master machine 10, so that the master machine 10, the first slave machine 201 and the first slave machine The second slave 202 provides a fully synchronized AC and DC power supply with the same frequency and phase.

It is worth mentioning that, through the first connection line 301 and the second connection line 302, the present invention allows the host 10, the first slave 201 and the second slave 202 to directly connect to each other to avoid delays. , So as to provide the highest accuracy and the best synchronous output state.

Please refer to Figure 3, which discloses the second embodiment of the present invention. The example is different from the aforementioned first embodiment of the present invention in that the port 42 of a host 40, the port 521 of a first slave 501, and the port 522 of a second slave 502 are all selected as BNC ports. Port for mutual connection.

Please refer to Figure 4, which discloses a third embodiment of the present invention. This embodiment is different from the aforementioned first embodiment of the present invention in that this embodiment further includes an external device 80 that can provide 10 MHz For example, the Rubidium Frequency Standard Oscillator, model SRS FS725, etc., and the external device 80 includes a port 81 for an external cable 308 to connect to the port 81 and the port 81 of the external device 80, respectively The input port 121 of the host 10 is used to connect the host 10 and the external device 80. At this time, the selector switch 14 is switched to a state where the second contact 142 is connected to the third contact 143, so that the host 10 can The base processing circuit 13 instead receives the time base of the external device 80, and with the high frequency accuracy of the external device 80, it can provide the host 10 with a more precise and accurate time base frequency. In this way, the host 10 can have a higher time accuracy to meet the demand for higher accuracy.

In more detail, when the host 10 is connected to the external device 80 through the external connection line 308, the selector switch 14 of the host 10 is switched so that the third contact 143 is connected to the second contact 142 to select The time base generator 11 of the host 10 and the time base processing circuit 13 are disconnected. Therefore, the time base processing circuit 13 of the host 10 can receive the time base of the external device 80 to perform frequency division and frequency division, thereby enabling the host 10 to synchronize with the time base of the external device 80.

Please refer to FIG. 5, which discloses a fourth embodiment of the present invention. The difference between this embodiment and the first embodiment of the present invention is that: the selection switch 14 of the master 10 and the first slave 201 The second slave 202 All are electronic switches, and the host 10, the first slave 201, and the second slave 202 further include a detection circuit 15, 251, 252, respectively. One end of the detection circuit 15 is connected to the port 12 The input port 121 is electrically connected, and the other end is electrically connected to the selector switch 14. One end of the detection circuit 251 is electrically connected to the input port 2211 of the port 221, and the other end is electrically connected to the selector switch 241 It is electrically connected, and one end of the detection circuit 252 is electrically connected to the input port 2221 of the port 222, and the other end is electrically connected to the selection switch 242.

When the first slave 201 is connected to the master 10 through the first connection line 301, the detection circuit 251 will automatically detect that the input port 2211 has a time base signal from an external input, and will select The third contact 2413 of the switch 241 is switched to connect to the second contact 2412, so that the time base processing circuit 231 of the first slave 201 is changed to receive the time base provided by the time base generator 11 of the master 10. Ground, when the second slave 202 is connected to the first slave 201 through the second connecting line 302, the detection circuit 252 automatically detects that the input port 2221 has an external time base signal, and the The third contact 2423 of the selector switch 242 is switched to connect to the second contact 2422, so that the time base processing circuit 232 is also changed to receive the time base provided by the time base generator 11 of the host 10.

Please refer to Figures 6 and 7, which disclose the fifth embodiment of the present invention. The difference between this embodiment and the first embodiment of the present invention is that: a host 60 whose port 62 is A common port for input and output, and the port 62 is a BNC port. However, this is only an embodiment and does not limit the implementation of the present invention. The connection port 62 can also be selected as an SMA, RJ45, or optical fiber connection port. In addition, the selector switch 64 includes a first contact 641, a second contact 642, a third contact 643, and a fourth contact 644. The first contact 641 is connected to a time base generator 61. The third contact 643 is connected to a time base processing circuit 63, the fourth contact 644 is connected to the connection port 62, and the third contact 643 is connected to the The fourth contact 644 can be connected to the first contact 641 at the same time to form a path, or alternatively, the third contact 643 and the fourth contact 644 can be connected to the second contact 642 to form a path at the same time. When the selector switch 64 has no external input at the fourth contact 644, the third contact 643 and the fourth contact 644 are selectively connected to the first contact 641, so that the time base processing circuit of the host 60 The time base of 63 is provided by the time base generator 61.

For a first slave 701, the port 721 is also a common port for input and output, and the port 721 is also a BNC port. In addition, the selector switch 741 includes a first contact 7411, a second contact 7412, a third contact 7413, and a fourth contact 7414. The first contact 7411 is connected to a time base generator 711. The third contact 7413 is connected to a time base processing circuit 731, the fourth contact 7414 is connected to the connection port 721, and the third contact 7413 and the fourth contact 7414 can be connected to the first A contact 7411 forms a path, or alternatively, the third contact 7413 and the fourth contact 7414 are simultaneously connected to the second contact 7412 to form a path.

For a second slave 702, its port 722 is also a common port for input and output, and the port 722 is also a BNC port. In addition, the selector switch 742 includes a first contact 7421, a second contact 7422, a third contact 7423, and a fourth contact 7424. The first contact 7421 is also the same as the time base generator. 712 is connected, the third contact 7423 is connected to the time base processing circuit 732, and the fourth contact 7424 is connected to the connection port 722. The third contact 7423 and the fourth contact 7424 can be connected to the first contact 7421 at the same time to form a path, or alternatively, the third contact 7423 and the fourth contact 7424 can be connected to the second contact 7422 at the same time. Form a pathway.

At least one connection line 30. In this embodiment, a first connection line 306, a second connection line 307, and a three-way connector 31 are defined. The three-way connector 31 can be plugged into the connection of the first slave 701 Port 721, so that the port 721 of the first slave 701 can respectively pass through the three-way connector 31 The first connector 311 and the second connector 312 perform input or output, and the two ends of the first connector line 306 can be respectively connected to the port 62 of the host 60 and the first connector 311 of the three-way connector 31 to connect The two ends of the master 60 and the first slave 701, and the second connecting line 307 are respectively connected to the second connector 312 of the three-way connector 31 and the connection port 722 of the second slave 702 to connect the first slave 701 and the second slave 702.

When the first slave 701 is connected to the master 60, the time base processing circuit 63 of the master 60 can receive the time base generated by the time base generator 61 of the master 60 through the selection switch 64, and can further transmit The connection port 62 outputs the time base of the host 60. The time base of the master 60 can be input to the time base processing circuit 731 of the first slave 701 through the first connection line 306 and through the connection port 721 of the first slave 701 and the selection switch 741. And since the first connecting line 306 is connected to the first slave 701, the selector switch 741 of the first slave 701 can be manually switched to the third contact 7423 and the fourth contact 7424 to connect to the second contact Point 7412, so the time base processing circuit 731 of the first slave 701 can receive the time base generated by the time base generator 61 of the master 60 and execute it according to the time base generated by the time base generator 61 of the master 60 Frequency division and frequency division, thereby allowing the first slave 701 and the master 60 to have a synchronized time base.

Similarly, when the second slave 702 is further connected to the first slave 701, the selection switch 742 of the second slave 702 is also switched so that the third contact 7423 and the fourth contact 7424 are connected to the second slave 702. With two contacts 7422, the time base processing circuit 732 is also changed to receive the time base provided by the time base generator 61 of the host 60, and perform frequency division according to the time base generated by the time base generator 61 of the host 60 And frequency division. In this way, the second slave 702 can have a synchronized time base with the first slave 701 and the master 60, so that the master 60, the first slave 701, and the second slave 702 can provide frequency and AC and DC power supplies with the same phase and complete synchronization.

Hereinafter, the features of the present invention and the expected effects that can be achieved are described as follows: The switching AC/DC power supply system with a 10MHz time base of the present invention, the slaves are connected to the host through the connecting wires, and When the selector switch of the slave is switched to the port of the slave and the time base processing circuit of the slave is connected, the time base generated by the time base generator of the master can be provided to the Wait for the time base processing circuit of the slaves, and then make the slaves and the master have a synchronized time base, and through the synchronization of the time base, the startup sequence of each PWM IC, as well as the phase and frequency of the PWM can be controlled , And then can further use the inversion and error equalization technology, so that the output ripple rate is lower, the EMI noise is less, and the high-quality AC and DC output power can be obtained.

In summary, the present invention has excellent practicality in similar products. At the same time, we have checked the domestic and foreign technical information about this type of structure. The literature has not found the same structure. Therefore, The present invention actually has the requirements for a patent for invention, and an application is filed in accordance with the law.

However, the above is only one of the preferred and feasible embodiments of the present invention. Therefore, any equivalent structural changes made by applying the specification of the present invention and the scope of the patent application should be included in the patent scope of the present invention.

10‧‧‧Host

11‧‧‧Time base generator

12‧‧‧Port

121‧‧‧Input port

122‧‧‧Output port

13‧‧‧Time base processing circuit

14‧‧‧Select switch

141‧‧‧First contact

142‧‧‧second contact

143‧‧‧third contact

20‧‧‧Slave

201‧‧‧First slave

202‧‧‧Second slave

211‧‧‧Time Base Generator

221‧‧‧Port

2211‧‧‧Input port

2212‧‧‧Output port

212‧‧‧Time Base Generator

222‧‧‧Port

2221‧‧‧Input port

2222‧‧‧Output port

231‧‧‧Time base processing circuit

241‧‧‧Selector switch

2411‧‧‧First contact

2412‧‧‧second contact

2413‧‧‧third contact

232‧‧‧Time base processing circuit

242‧‧‧Select switch

2421‧‧‧First contact

2422‧‧‧second contact

2423‧‧‧third contact

30‧‧‧Connecting line

301‧‧‧First connection line

302‧‧‧Second connection line

Claims (5)

A switching AC and DC power supply system with a 10MHz time base, which includes: a host that can supply AC and DC power, the host includes: a time base generator, which can provide a 10MHz time base; a time base processing circuit , Is connected to the time base generator for frequency division and frequency division; a port is connected to the time base generator; at least one slave machine can supply AC and DC power, the slave machine includes: A time base generator, which can provide a 10MHz time base; a selector switch, one end of which is connected to the time base generator of the slave, and the other end is available for switching to the time base generator of the slave To form a path or not to form a path; a time-base processing circuit is connected to the other end of the selector switch for frequency division and frequency division; a port can be switched by the selector switch to make the slave The time base processing circuit is connected to the port of the slave, but not to the time base generator of the slave; at least one connection line can be connected to the port of the master and the port of the slave respectively, To connect the master and the slave; thereby, when the slave is connected to the master through the connection line, and the selector switch of the slave is switched to the port of the slave and the time base processing of the slave When the circuit is connected, the time base generated by the time base generator of the master can be provided to the time base processing circuit of the slave through the connection line, so that the slave and the master have a synchronized time base. According to the switching AC/DC power supply system with 10MHz time base described in the first item of the patent application, the port of the slave machine further includes an input port and an output port, and the selection switch further includes a A first contact, a second contact and a third contact, the first contact is connected to the time base generator of the slave, the second contact is connected to the input port, and The third contact is connected with the time base processing circuit of the slave and the output port, wherein the The third contact can be connected to the second contact to form a path, or the first contact can be connected to form a path. According to the switching type AC and DC power supply system with 10MHz time base described in item 1 of the scope of patent application, the selection of the slave machine is an electronic switch, the slave machine further includes a detection circuit, and the slave machine One end of the detection circuit is electrically connected to the port of the slave machine, and the other end is electrically connected to the selection switch of the slave machine. The switching AC/DC power supply system with a 10MHz time base according to the first item of the scope of patent application, which further includes an external device that can provide a 10MHz time base, and the external device is connected to the host Port, and the host further includes a selector switch. One end of the selector switch of the host can be selectively switched to be connected to the time base generator of the host or connected to the external device, and the other end of the selector switch of the host is connected to the The time base processing circuit of the host is connected so that the time base processing circuit of the host can obtain the time base of the external device through the switching of the selector switch of the host. According to the switching AC/DC power supply system with 10MHz time base described in the first item of the scope of patent application, the port of the slave machine is a common port for input and output, and the selection switch further includes a first connection Point, a second contact, a third contact and a fourth contact, the first contact is connected to the time base generator of the slave, and the third contact is the time of the slave The base processing circuit is connected, and the fourth contact is connected to the port of the slave. The third contact and the fourth contact can be connected to the first contact at the same time to form a path, or can be switched to the The third contact and the fourth contact are simultaneously connected to the second contact to form a path.

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