CN204887558U

CN204887558U - Multifunction flashlight's latch circuit

Info

Publication number: CN204887558U
Application number: CN201520510088.1U
Authority: CN
Inventors: 朱红卫; 杜浩华
Original assignee: Haining Haiwei Electronic Science & Technology Co Ltd
Current assignee: Haining Haiwei Electronic Science & Technology Co Ltd
Priority date: 2015-07-14
Filing date: 2015-07-14
Publication date: 2015-12-16
Anticipated expiration: 2025-07-14

Abstract

The utility model provides a multifunction flashlight's latch circuit who has less size and a lower cost who is used for that the function switches, it includes comparator COMP, MOS field effect transistor M1, M2, M3, M4, M5, M6, M7, M8, M9, M10 and phase inverter A, B, M5's S end, M7's G end, comparator COMP's DN end interconnect, M5's B end, M6's B end, comparator COMP's GND end, M9's B end, M10's the equal ground connection of B end, M6's D end, phase inverter A's output, phase inverter B's input interconnect, phase inverter A's input and status signal input STO are connected, phase inverter B's output is connected with M10's D end, M10's G end, M6's G end, control end K interconnect, M9's S end, M8's G end, comparator COMP's DP end interconnect, M7's D end, the B end, S end and M8's D end, the B end, S holds equal ground connection, comparator COMP's VDD termination power VDD, comparator COMP's Q end is output CAP1.

Description

The latch cicuit of multifunctional electric torch

Technical field

The utility model relates to latch cicuit technical field, is specifically a kind of latch cicuit of multifunctional electric torch.

Background technology

Multifunctional electric torch has entirely bright, SOS glimmers, the functions such as warning, the structure realizing these functions is mainly the commutation circuit of electric capacity cooperation external circuit formation, the electromotive force that electric capacity provides is relied on when multifunctional electric torch switches between each function, namely switching push button is pressed, now for turning off, chip power-down, electric capacity remembers the electromotive force of functional mode before turning off for chip provides, general energy maintains a few second, when again pressing switching push button, now switch on power, chip switches to other functional modes, this completes the switching of two functions, more than three or three functions are had just sequentially to switch, from above-mentioned, prior art must have electric capacity, therefore, commutation circuit volume is larger, cost is also higher.

Utility model content

Technical problem to be solved in the utility model is, overcomes the defect of prior art, provides a kind of latch cicuit with the multifunctional electric torch of less size and lower cost switched for function.

For solving the problems of the technologies described above, the utility model proposes a kind of latch cicuit of multifunctional electric torch, it comprises comparator COMP, metal-oxide-semiconductor field effect transistor M1, M2, M3, M4, M5, M6, M7, M8, M9, M10 and inverter A, B, wherein M2, M3 are PMOS field effect transistor, and other metal-oxide-semiconductor field effect transistors are NMOS field effect transistor, the G end of M1, the D end of M1, the G end of M2, the G end of M3 are interconnected, and the B end of M1, S hold equal ground connection, and the D end of M3, B end, S end all meet power vd D, and B end, the S end of M2 all meet power vd D, the D end of M2, the G end of M4, the G end of M5, the G end of M9 are interconnected, the D end of M4, B end, S hold equal ground connection, the S end of M5, the G end of M7, the DN end of comparator COMP is interconnected, the D end of M5 is held with the S of M6 and is connected, the B end of M5, the B end of M6, the GND end of comparator COMP, the B end of M9, the B of M10 holds equal ground connection, the D end of M6, the output of inverter A, the input of inverter B is interconnected, the input of inverter A is connected with state signal input terminal STO, the output of inverter B is held with the D of M10 and is connected, the G end of M10, the G end of M6, control end K is interconnected, the S end of M10 is held with the D of M9 and is connected, the S end of M9, the G end of M8, the DP end of comparator COMP is interconnected, the D end of M7, B holds, the D end of S end and M8, B holds, S holds equal ground connection, the vdd terminal of comparator COMP meets power vd D, and the Q end of comparator COMP is output CAP1.

After adopting said structure, compared with prior art, the utility model has the following advantages: state signal input terminal STO is a signal of previous status, such as 1, control end K is that a fixed signal works to enable whole circuit, such as one stable electromotive force, output CAP1 exports a signal to coding-decoding circuit, like this, along with the change of STO, CAP1 also changes, thus practical function switches, whole main circuit will realize based on metal-oxide-semiconductor field effect transistor, in reality, inverter A, B and comparator COMP also builds by metal-oxide-semiconductor field effect transistor, therefore, whole circuit has less size and lower cost, cost advantage when lower cost is mainly reflected in compared with high efficiency and produces in enormous quantities.

As improvement, comparator COMP comprises metal-oxide-semiconductor field effect transistor M11, M12, M13, M14, M15, M16, M17, M18, M19 and inverter C, wherein M11, M12, M13, M14, M15 are PMOS field effect transistor, and M16, M17, M18, M19 are NMOS field effect transistor; The S end of the G end of the S end of M11, the B end of M11, M16, the B end of M14, M12, the B end of M12, the B end of M15, the S end of M13, the B end of M13 all connect vdd terminal; The D end of the G end of M11, the D end of M11, M16, the G end of M12, the G end of M13 are interconnected, the S end of the D end of M12, the S end of M14, M15 is interconnected, the D end of M14, the D end of M17, the G end of M17, the G end of M18 are interconnected, the G end of the D end of M15, the D end of M18, M19 is interconnected, the D end of the D end of M13, the input of inverter C, M19 is interconnected, and the S end of the S end of the S end of M16, the B end of M16, M17, the B end of M17, M18, the B end of M18, the S end of M19, the B end of M19 all connect GND end; The G termination DP of M14 holds, and the G termination DN of M15 holds, and the output termination Q of inverter C holds, and described comparator COMP structure is simple, stable and reliable operation, thus the raising being more conducive to the utility model stability and reliability.

Accompanying drawing explanation

Fig. 1 is the circuit theory diagrams of the latch cicuit of the utility model multifunctional electric torch.

Fig. 2 is the circuit theory diagrams of the comparator COMP of the latch cicuit of the utility model multifunctional electric torch.

Embodiment

Below the utility model is described in further detail:

The latch cicuit of the utility model multifunctional electric torch, it comprises comparator COMP, metal-oxide-semiconductor field effect transistor M1, M2, M3, M4, M5, M6, M7, M8, M9, M10 and inverter A, B, wherein M2, M3 are PMOS field effect transistor, and other metal-oxide-semiconductor field effect transistors are NMOS field effect transistor, the G end of M1, the D end of M1, the G end of M2, the G end of M3 are interconnected, and the B end of M1, S hold equal ground connection, and the D end of M3, B end, S end all meet power vd D, and B end, the S end of M2 all meet power vd D, the D end of M2, the G end of M4, the G end of M5, the G end of M9 are interconnected, the D end of M4, B end, S hold equal ground connection, the S end of M5, the G end of M7, the DN end of comparator COMP is interconnected, the D end of M5 is held with the S of M6 and is connected, the B end of M5, the B end of M6, the GND end of comparator COMP, the B end of M9, the B of M10 holds equal ground connection, the D end of M6, the output of inverter A, the input of inverter B is interconnected, the input of inverter A is connected with state signal input terminal STO, the output of inverter B is held with the D of M10 and is connected, the G end of M10, the G end of M6, control end K is interconnected, the S end of M10 is held with the D of M9 and is connected, the S end of M9, the G end of M8, the DP end of comparator COMP is interconnected, the D end of M7, B holds, the D end of S end and M8, B holds, S holds equal ground connection, the vdd terminal of comparator COMP meets power vd D, and the Q end of comparator COMP is output CAP1.

Comparator COMP comprises metal-oxide-semiconductor field effect transistor M11, M12, M13, M14, M15, M16, M17, M18, M19 and inverter C, wherein M11, M12, M13, M14, M15 are PMOS field effect transistor, and M16, M17, M18, M19 are NMOS field effect transistor; The S end of the G end of the S end of M11, the B end of M11, M16, the B end of M14, M12, the B end of M12, the B end of M15, the S end of M13, the B end of M13 all connect vdd terminal; The D end of the G end of M11, the D end of M11, M16, the G end of M12, the G end of M13 are interconnected, the S end of the D end of M12, the S end of M14, M15 is interconnected, the D end of M14, the D end of M17, the G end of M17, the G end of M18 are interconnected, the G end of the D end of M15, the D end of M18, M19 is interconnected, the D end of the D end of M13, the input of inverter C, M19 is interconnected, and the S end of the S end of the S end of M16, the B end of M16, M17, the B end of M17, M18, the B end of M18, the S end of M19, the B end of M19 all connect GND end; The G termination DP of M14 holds, and the G termination DN of M15 holds, and the output termination Q of inverter C holds.

In actual applications, the latch cicuit of multiple the utility model multifunctional electric torch can be carried out set application, namely multiple latch cicuit is comprised, the control end K of each latch cicuit is interconnected, each latch cicuit provides CAP1 to coding-decoding circuit respectively, the various combination of multiple CAP1 can realize the coding enriched, the corresponding function of each coding, realize more function to control, constitute the rendezvous scheme of a latch cicuit, latch cicuit due to the utility model multifunctional electric torch has less size and lower cost, so this rendezvous scheme also has less size and lower cost, cost advantage when lower cost is mainly reflected in compared with high efficiency and produces in enormous quantities.

The above is only better embodiment of the present utility model, therefore all equivalences done according to structure, feature and the principle described in the utility model patent claim change or modify, and are included in the utility model patent claim.

Claims

1. the latch cicuit of a multifunctional electric torch, it is characterized in that, it comprises comparator COMP, metal-oxide-semiconductor field effect transistor M1, M2, M3, M4, M5, M6, M7, M8, M9, M10 and inverter A, B, wherein M2, M3 are PMOS field effect transistor, and other metal-oxide-semiconductor field effect transistors are NMOS field effect transistor, the G end of M1, the D end of M1, the G end of M2, the G end of M3 are interconnected, and the B end of M1, S hold equal ground connection, and the D end of M3, B end, S end all meet power vd D, and B end, the S end of M2 all meet power vd D, the D end of M2, the G end of M4, the G end of M5, the G end of M9 are interconnected, the D end of M4, B end, S hold equal ground connection, the S end of M5, the G end of M7, the DN end of comparator COMP is interconnected, the D end of M5 is held with the S of M6 and is connected, the B end of M5, the B end of M6, the GND end of comparator COMP, the B end of M9, the B of M10 holds equal ground connection, the D end of M6, the output of inverter A, the input of inverter B is interconnected, the input of inverter A is connected with state signal input terminal STO, the output of inverter B is held with the D of M10 and is connected, the G end of M10, the G end of M6, control end K is interconnected, the S end of M10 is held with the D of M9 and is connected, the S end of M9, the G end of M8, the DP end of comparator COMP is interconnected, the D end of M7, B holds, the D end of S end and M8, B holds, S holds equal ground connection, the vdd terminal of comparator COMP meets power vd D, and the Q end of comparator COMP is output CAP1.

2. the latch cicuit of multifunctional electric torch according to claim 1, it is characterized in that, comparator COMP comprises metal-oxide-semiconductor field effect transistor M11, M12, M13, M14, M15, M16, M17, M18, M19 and inverter C, wherein M11, M12, M13, M14, M15 are PMOS field effect transistor, and M16, M17, M18, M19 are NMOS field effect transistor; The S end of the G end of the S end of M11, the B end of M11, M16, the B end of M14, M12, the B end of M12, the B end of M15, the S end of M13, the B end of M13 all connect vdd terminal; The D end of the G end of M11, the D end of M11, M16, the G end of M12, the G end of M13 are interconnected, the S end of the D end of M12, the S end of M14, M15 is interconnected, the D end of M14, the D end of M17, the G end of M17, the G end of M18 are interconnected, the G end of the D end of M15, the D end of M18, M19 is interconnected, the D end of the D end of M13, the input of inverter C, M19 is interconnected, and the S end of the S end of the S end of M16, the B end of M16, M17, the B end of M17, M18, the B end of M18, the S end of M19, the B end of M19 all connect GND end; The G termination DP of M14 holds, and the G termination DN of M15 holds, and the output termination Q of inverter C holds.