CN205754970U - AC DC power module - Google Patents

Abstract

The utility model discloses a kind of AC DC power module, its drip irrigation device is to include heating unit, control unit and be preset with the temperature detecting unit of a temperature warning value；Whether temperature detecting unit reaches temperature warning value and detects signal for detecting the temperature within AC DC power module with output temperature；Control unit is coupled to temperature detecting unit to receive temperature detection signal, and exports control signal；Heating unit is coupled to control unit to receive control signal；When the temperature within temperature detecting unit detects AC DC power module reaches temperature warning value, heating unit in response to control signal so that AC DC power module is heated.When ambient temperature is relatively low around and when reaching the temperature warning value of AC DC power module, control heating unit is started working, thus is heated AC DC power module by control unit so that AC DC power module adapts to cold environment work.

Description

AC-DC power module

Technical field

This utility model relates to power-supply device field, particularly to a kind of AC-DC power module.

Background technology

AC-DC power module, is a kind of device that can make to form constant current in circuit, has a wide range of applications.

At present, notification number is that the Chinese patent of CN203352896U discloses a kind of LED-based emergency light, its bag Including LED, AC-DC power module, battery, whole circuit is carried out by AC-DC power module as the DC source needed for system Power supply, also bus detection of power loss module, bus detection of power loss module detects whether to have a power failure, and output switching signal is to combining Closing control module, intelligent comprehensive control module controls battery and charges and discharges electricity and the switch controlling LED and light intensity.

Although this LED-based emergency light have can when power down the function of automatic bright light, but, to AC- Finding in DC research process, AC-DC power module has the most corresponding standard operating temperature.When the temperature of working environment is low When standard operating temperature, AC-DC power module will be unable to normally work.Such as, if the emergency light of this kind of LED is used in north Side, be in the environment in winter in the north, when bulk temperature is relatively low, wherein AC-DC power module possibly cannot normal power supply, because of , there are certain improvements in this.

Utility model content

The deficiency existed for prior art, the purpose of this utility model is to provide a kind of AC-DC power module, at ring When border temperature is relatively low, AC-DC power module can be heated so that the AC-DC power module environment that seasons oneself to cold normally works.

Above-mentioned technical purpose of the present utility model has the technical scheme that

A kind of AC-DC power module, including heating unit, control unit and the temperature being preset with a temperature warning value Detector unit；

Described temperature detecting unit is for detecting whether the temperature within AC-DC power module reaches temperature warning value with defeated Go out temperature detection signal；

Described control unit is coupled to temperature detecting unit to receive temperature detection signal, and exports control signal；

Described heating unit is coupled to control unit to receive control signal；

When described temperature detecting unit detects that the temperature within AC-DC power module reaches temperature warning value, described Heating unit in response to control signal so that AC-DC power module is heated.

By technique scheme, in real time AC-DC power module is detected by temperature detecting unit, around ring When border temperature is relatively low and when reaching the lower limit of AC-DC power module standard operating temperature, i.e. the temperature warning of AC-DC power module During value, control heating unit is started working by control unit, thus heats AC-DC power module so that AC-DC power supply Module goes back up between standard operating temperature, is i.e. on temperature warning value, thus ensures that AC-DC power module can normal work Make so that AC-DC power module adapts to cold environment work.

Preferably, described temperature detecting unit includes temperature detecting part, multi-harmonic-oscillations portion and has a mid frequency Frequency lsb decoder, described temperature warning value corresponds to described mid frequency；

Described temperature detecting part is for detecting the variations in temperature within AC-DC power module with output temperature signal；

Described multi-harmonic-oscillations portion is coupled to temperature detecting part to receive temperature signal, and exports corresponding with temperature signal Oscillator signal；

Described frequency lsb decoder is coupled to multi-harmonic-oscillations portion to receive oscillator signal, and is entered with mid frequency by oscillator signal Row relatively rear output temperature detection signal is to control unit；

When described temperature detecting part detects that the temperature within AC-DC power module reaches temperature warning value so that vibration is believed Number frequency when falling on the mid frequency of frequency lsb decoder, described control unit controls heating unit work.

By technique scheme, if temperature detecting part detects that ambient temperature changes so that multi-harmonic-oscillations The frequency of portion's outputting oscillation signal will change, and wherein, temperature warning value is corresponding with mid frequency, around ambient temperature Declining and reach temperature warning value, when the frequency making oscillator signal being fallen on mid frequency, control unit is by single for control heating Unit starts working, and this kind of temperature detection mode is highly sensitive, and circuit is swift in response.

Preferably, described multi-harmonic-oscillations portion is 555 multivibrators.

By technique scheme, 555 intervalometer low costs, dependable performance, can be the most square by outer meeting resistance and electric capacity Just constitute multivibrator, and circuit structure is simple, it is simple to the later stage safeguards and keeps in repair.

Preferably, described frequency lsb decoder is coupled with the regulation portion for regulating mid frequency size.

By technique scheme, regulation portion can the mid frequency of regulating frequency lsb decoder, thus regulate Humidity Detection The reference value of unit, to adapt to the humidity warning value of different requirement.

Preferably, described frequency lsb decoder includes decoder LM567, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity；Described Regulation portion is variable resistance；3 feet of decoder LM567 are coupled to the outfan in multi-harmonic-oscillations portion, the 5 foot couplings of decoder LM567 Being connected to variable-resistance one end, the variable-resistance other end is coupled to the negative pole of power supply E by the 3rd electric capacity；Decoder LM567 6 feet be coupled on the node between variable resistance and the 3rd electric capacity；4 feet of decoder LM567 are coupled to the positive pole of power supply E, 7 feet of decoder LM567 are coupled to the negative pole of power supply E, and 1 foot of decoder LM567 is coupled to the negative of power supply E by the 4th electric capacity Pole；2 feet of decoder LM567 are coupled to the negative pole of power supply E by the 5th electric capacity；8 feet of decoder LM567 are coupled to control list The positive pole of power supply E is connected after unit.

By technique scheme, LM567 chip performance is reliable, low cost, constitutes frequency-selecting by above-mentioned connected mode Circuit, it is possible to quickly the oscillator signal of characteristic frequency is identified, and circuit structure stability is high, it is easy to accomplish.

Preferably, described control unit is coupled with for keep heating unit heats state from lock section.

By technique scheme, from the setting of lock section, the heated condition of heating unit can be made to be maintained so that The constant temperature of AC-DC power module rises the temperature warning value departing from AC-DC power module so that AC-DC power module Can normally work；If the not setting from lock section, at temperature sensing circuit, heating unit will detect that temperature one test is to temperature Begin to work during warning value, do not work in time departing from temperature warning value, thus under repeatedly opening and closing, easily make heating unit Damage.

Preferably, described control unit is also coupled to for releasing the reset unit from lock section self-locking state.

By technique scheme, after making heating unit continuous firing a period of time from lock section, by reset unit Release the self-locking state from lock section so that heating unit no longer works, thus the heating avoiding heating unit the most long makes AC- The temperature of DC power module is beyond the upper limit of standard operating temperature, thus the setting of the unit that resets, improve AC-DC power supply mould The property easy to use of block.

Preferably, described reset unit includes that time delay portion and enforcement division, the controlled end in described time delay portion are coupled to control list Unit is to receive control signal and to export time delayed signal, and described enforcement division is coupled to time delay portion with reception delay signal, and in response to Time delayed signal is to realize from lock section time-delay reset.

By technique scheme, by the setting in time delay portion, working at the beginning at heating unit, time delay portion just starts meter Time, and automatically resetted to from lock section by enforcement division after time delay a period of time, thus further increase the use of circuit Convenience, it is ensured that heating unit no longer heats after AC-DC power module is heated to standard operating temperature, it is ensured that AC- While DC power module normally works, it also avoid the waste that electric energy is unnecessary.

Preferably, described time delay portion is coupled with the configuration part for regulating delay time.

By technique scheme, when the delay time of reset unit time-delay reset is the work of heating unit heats Between, the working time of heating unit heats can be regulated by configuration part, to meet AC-DC power module under various circumstances Work, to improve the practicality of circuit.

Preferably, also include that indicating member, described indicating member are coupled to control unit to receive control signal, and respond In control signal to realize instruction.

By technique scheme, when heating unit is started working, indicating member will be started working accordingly, thus gives User of service sufficiently indicates, and gives the instruction information that ambient temperature is relatively low.

In sum, this utility model in contrast to having the beneficial effect that of prior art

When ambient temperature is relatively low around and when reaching the temperature warning value of AC-DC power module, control unit will control Heating unit is started working, thus heats AC-DC power module so that AC-DC power module adapts to cold environment Work.

Accompanying drawing explanation

Fig. 1 is the circuit theory diagrams of temperature detecting unit, control unit；

Fig. 2 is heating unit, from lock section, the circuit theory diagrams of reset unit, indicating member.

Reference: 1, heating unit；2, control unit；3, temperature detecting unit；31, temperature detecting part；32, multi-resonant Swing portion；33, frequency lsb decoder；4, regulation portion；5, from lock section；6, reset unit；61, time delay portion；62, enforcement division；7, configuration part； 8, indicating member；C3, the 3rd electric capacity；C4, the 4th electric capacity；C5, the 5th electric capacity；RP1, variable resistance.

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model is described in further detail.

Embodiment one:

A kind of AC-DC power module, shown in Fig. 1 and Fig. 2, including heating unit 1, control unit 2 and be preset with The temperature detecting unit 3 of one temperature warning value；Whether temperature detecting unit 3 is for detecting temperature within AC-DC power module Reach temperature warning value and detect signal with output temperature；Control unit 2 is coupled to temperature detecting unit 3 to receive temperature detection letter Number, and export control signal；Heating unit 1 is coupled to control unit 2 to receive control signal；When temperature detecting unit 3 detects To the temperature within AC-DC power module reach temperature warning value time, heating unit 1 in response to control signal with to AC-DC electricity Source module heats.

AC-DC power module has standard operating temperature, and temperature detecting unit 3 can be to the temperature within AC-DC power module Degree detects, when temperature detecting unit 3 detects that temperature reaches temperature warning value, and (i.e. AC-DC power module standard work The lower limit of temperature), AC-DC power module is heated by control unit 2 by control heating unit 1, makes AC-DC power module Temperature is maintained between standard operating temperature.Wherein, heating unit 1 is PTC heater, and PTC heater is located at AC-DC power supply mould On the outer surface of block.Heat will be produced so that the skin temperature of AC-DC power module rises when heating unit 1 is energized, so that Obtain the temperature within AC-DC power module to raise, reach its standard operating temperature, it is to avoid AC-DC power module is because of building ring Border temperature is too low and quits work, thus ensures that it adapts to the environment of cold.

Temperature detecting unit 3 includes temperature detecting part 31, multi-harmonic-oscillations portion 32 and has the frequency solution of a mid frequency Code portion 33, temperature warning value corresponds to mid frequency；Temperature detecting part 31 becomes for detecting the temperature within AC-DC power module Change with output temperature signal；Multi-harmonic-oscillations portion 32 is coupled to temperature detecting part 31 to receive temperature signal, and exports and believe with temperature Number corresponding oscillator signal；Frequency lsb decoder 33 is coupled to multi-harmonic-oscillations portion 32 to receive oscillator signal, and by oscillator signal Rear output temperature detection signal is compared to control unit 2 with mid frequency；When temperature detecting part 31 detects AC-DC power supply When the temperature of inside modules reaches temperature warning value so that the frequency of oscillator signal falls on the mid frequency of frequency lsb decoder 33, Control unit 2 controls heating unit 1 and works.

Temperature detecting part 31 is critesistor RT1, and critesistor RT1 uses the critesistor RT1 of negative temperature coefficient, thus According to the characteristic of its positive temperature coefficient, when critesistor RT1 detects that AC-DC power module internal temperature diminishes, temperature-sensitive electricity The resistance of resistance RT1 will diminish；Otherwise, the resistance of critesistor RT1 will become big.

Shown in Figure 1, multi-harmonic-oscillations portion 32 is 555 multivibrators.555 multivibrators include the one 555 chip, First resistance R1, the first electric capacity C1 and the second electric capacity C2；One end of first resistance R1 is coupled to the positive pole of power supply E, other end coupling Being connected to one end of critesistor RT1, the other end of critesistor RT1 is coupled to the negative pole of power supply E by the first electric capacity C1；First 7 feet of 555 chips are coupled on the node between the first resistance R1 and critesistor RT1, and 6 feet and 2 feet of the one 555 chip are equal Being coupled to the node between critesistor RT1 and the first electric capacity C1,4 feet and 8 feet of the one 555 chip are all coupled to power supply E's Positive pole, 1 foot ground connection of the one 555 chip, 5 feet of the one 555 chip are coupled to one end of the second electric capacity C2, the second electric capacity C2's The other end is coupled to the negative pole of power supply E；3 foot outputting oscillation signals of the one 555 chip are to the input of frequency lsb decoder 33.

After switching on power, the first electric capacity C1 is electrically charged, when the node voltage on the first electric capacity C1 rises to power supply E voltage When 2/3rds, 3 feet of the one 555 chip are by output low level, and its internal discharge diode turns on simultaneously；Now the first electricity Hold C1 to be discharged by critesistor RT1 and discharge diode, make the node voltage of the first electric capacity C1 decline；When on the first electric capacity C1 Node voltage drop to power supply E voltage three/for the moment, 3 foot voltages upsets of the one 555 chip are for high level, when first When node voltage on electric capacity C1 rises to 2/3rds of power supply E voltage, 3 feet of the one 555 chip overturn again as low level, So go round and begin again；Then, 3 feet at the one 555 chip just obtain a periodic square wave, its frequency of oscillation f= 1.43/ [(R1+2RT1) C1]；Owing to critesistor RT1 uses negative temperature coefficient, therefore when AC-DC power module internal temperature During rising, the resistance of critesistor RT1 reduces, and can obtain according to the relational expression of frequency of oscillation, and the frequency of oscillator signal increases；Instead It, when the temperature within AC-DC power module declines, the resistance of critesistor RT1 increases, and the frequency of oscillator signal will therewith Reduce.

Shown in Figure 1, frequency lsb decoder 33 is coupled with the regulation portion 4 for regulating mid frequency size.Frequency solution Code portion 33 includes decoder LM567, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5；Regulation portion 4 is variable resistance RP1； 3 feet of decoder LM567 are coupled to 3 feet of the one 555 chip, and 5 feet of decoder LM567 are coupled to the one of variable resistance RP1 End, the other end of variable resistance RP1 is coupled to the negative pole of power supply E by the 3rd electric capacity C3；6 feet of decoder LM567 are coupled to On node between variable resistance RP1 and the 3rd electric capacity C3；4 feet of decoder LM567 are coupled to the positive pole of power supply E, decoder 7 feet of LM567 are coupled to the negative pole of power supply E, and 1 foot of decoder LM567 is coupled to the negative pole of power supply E by the 4th electric capacity C4； 2 feet of decoder LM567 are coupled to the negative pole of power supply E by the 5th electric capacity C5；8 feet of decoder LM567 are coupled to control list The positive pole of power supply E is connected after unit 2.

5 feet and 6 feet of decoder LM567 are used for providing output waveform, and 8 feet are the main delivery outlet of decoder LM567, and 5 Foot and the external variable resistance RP1 of 6 feet and the 3rd electric capacity C3 determine the mid frequency (f0=1/1.1RC) of decoder LM567, R in formula represents the effective resistance value of variable resistance RP1, and C represents the capacitance of the 3rd electric capacity C3, and therefore can pass through regulation can The resistance of power transformation resistance RP1 carrys out the mid frequency size of regulating frequency decoder LM567；The mid frequency of decoder LM567 is corresponding In temperature warning value, and the lower limit of temperature warning value corresponding A C-DC power module standard operating temperature, thus actually used In, the value of temperature warning value (mid frequency) can be regulated by regulation portion 4 and be slightly more than the lower limit of standard operating temperature, from And when the temperature of AC-DC power module soon reaches the lower limit of standard operating temperature, heating module just will start preheating, protect Card AC-DC power module will not shut down work.

Wherein, 2 feet of decoder LM567 to connect the 5th electric capacity C5 be phase comparator output low pass filter, 1 The output that the 4th electric capacity C4 the is quadrature phase detector device filtering that foot connects, wherein the capacitance of the 4th electric capacity C4 should be not less than the The twice of five electric capacity C5；3 feet of decoder LM567 are signal input part, are used for receiving oscillator signal；When decoder LM567 institute When the frequency of the oscillator signal received just falls wherein frequency of heart, 8 feet of decoder LM567 are by the temperature of output low level Detection signal is to control unit 2；Otherwise, 8 feet of decoder LM567 will export the temperature detection signal of high level to control unit 2。

Control unit 2 includes the first relay K 1, and coil one end of the first relay K 1 is connected to the positive pole of power supply E, separately One end is connected to 8 feet of decoder LM567, at 8 feet of decoder LM567 by the temperature detection signal of output low level to first Time in relay K 1, the two ends making the first relay K 1 coil are produced potential difference, thus obtains electric adhesive；Otherwise, decoder The temperature detection signal of the 8 feet output high level of LM567 is to time in the first relay K 1, and the coil of the first relay K 1 must not Electricity.The normally opened contact of the first relay K 1 is connected in parallel on the current supply circuit of heating unit 1, anti-on the coil of the first relay K 1 It is parallel with sustained diode 1, reaches to protect the purpose of the first relay K 1.

Embodiment two:

On the basis of embodiment one, shown in Fig. 1 and Fig. 2, control unit 2 is coupled with for keeping heating single Unit 1 heated condition from lock section 5.Include that from lock section 5 second relay K 2, one end of the second relay K 2 coil are connected to heating Unit 1, other end ground connection, the normally opened contact of the second relay K 2 is connected in parallel on the normally opened contact of the first relay K 1, thus When the normally opened contact of the first relay K 1 closes, the coil making the second relay K 2 is obtained electric, so that the second relay The normally opened contact of K2 has closed auto-lock process；Thus when the temperature of AC-DC power module departs from temperature warning value, heating is single Unit 1 will be in obtain the state of electric heating all the time.

Embodiment three:

On the basis of embodiment two, control unit 2 is also coupled to for releasing the reset from lock section 5 self-locking state Unit 6.Reset unit 6 includes time delay portion 61 and enforcement division 62, and the controlled end in time delay portion 61 is coupled to control unit 2 to receive control Signal processed also exports time delayed signal, and enforcement division 62 is coupled to time delay portion 61 with reception delay signal, and in response to time delayed signal with Realize from lock section 5 time-delay reset.

Time delay portion 61 is 555 delay circuits, and the annexation of 555 delay circuits is as in figure 2 it is shown, time delay portion 61 is used for releasing The time of self-locking, the controlled end in time delay portion 61 is coupled to the normally opened contact of the first relay K 1 and is controlled by the first relay K 1 Normally opened contact, to export time delayed signal, the controlled end of the 2nd 555 chip is 2 feet, therefore the normally opened contact of the first relay K 1 connects In 2 feet of the 2nd 555 chip, when the normally opened contact of the first relay K 1 closes, 2 feet of the most i.e. the 2nd 555 chip directly connect Ground is to be transfused to a low level, and time delay portion 61 triggers for low level, therefore time delay portion 61 starts, within a certain period of time from second 3 foot output high level of 555 chips, it is achieved the function of time delay.Time delay portion 61 is also coupled to the setting for regulating delay time Portion 7, configuration part 7 is adjustable resistance RP2, by regulation adjustable resistance RP2 to realize the regulation to delay time.

Enforcement division 6242 includes the audion Q1 of NPN type, the 3rd relay K 3, and the base stage of audion Q1 is connected to time delay portion The outfan of 61, the colelctor electrode of audion Q1 is connected to the line of emitter stage connection the 3rd relay K 3 of power supply VCC, audion Q1 Ground connection after circle, the normally-closed contact of the 3rd relay K 3 is connected between coil and the ground of the second relay K 2.When audion Q1 connects When receiving high level signal, then audion Q1 conducting so that the coil of the 3rd relay K 3 obtains electric, so that the 3rd relay K 3 Normally-closed contact open, make the second relay K 2 dead electricity, with realize reset function.

Embodiment four:

On the basis of embodiment three, also include that indicating member 8, indicating member 8 are coupled to control unit 2 to receive control Signal processed, and in response to control signal to realize instruction.Indicating member 8 is LED 1, and LED 1 is also Be associated on the coil of the second relay K 2, the second relay K 2 coil obtain electric while, LED 1 also will be corresponding Luminescence must be conducted, give user of service instruction.

Operation principle:

When the temperature within critesistor RT1 detection AC-DC power module reduces, multi-harmonic-oscillations portion 32 will be made to export The frequency of oscillator signal reduces, when the temperature within AC-DC power module reaches temperature warning value so that the frequency of oscillator signal Rate falls on mid frequency, so that the 8 foot output low level signals of decoder LM567 so that the first relay K 1 obtains electric, The normally-closed contact Guan Bi of the first relay K 1, to turn on the current supply circuit of heating unit 1 so that heating unit 1 is in heating shape State；And now, the input in the normally-closed contact closed pair time delay portion 61 of the first relay K 1 introduces a low level signal, makes Obtain time delay portion 61 to start working；And the second mutually deserved electricity of coil of relay K 2 so that the normally opened contact of the second relay K 2 closes Conjunction completes auto-lock process, if now the temperature of AC-DC power module departs from temperature warning value because of heating unit 1, heating is single The current supply circuit of unit 1 is also by the conduction state so that heating unit 1 continuous heating；After time delay portion 61 time delay a period of time, Outfan from time delay portion 61 is exported the time delayed signal base stage to audion Q1 of high level so that audion Q1 turns on, the The coil of three relay K 3 obtains electric, and the normally-closed contact of the 3rd relay K 3 is opened, and to disconnect the current supply circuit of heating unit 1, makes The second relay K 2 coil no longer electric, thus the releasing self-locking state from lock section 5.

AC-DC power module is divided into business level, technical grade and army grade, the standard of the AC-DC power module of business level Operating temperature is between 0 DEG C ~ 50 DEG C, and the standard operating temperature of technical grade is between-25 DEG C ~+50 DEG C, and the standard of army grade works Temperature is between-40 DEG C ~+55 DEG C；Wherein, the price of technical grade at least exceeds one times than the price of business level, and army grade Price at least exceeds several times even tens times than the price of business level.If AC-DC power module of the prior art is on cold ground When district uses, it is equipped with technical grade or the AC-DC power module of army grade for it, needs substantial amounts of cost.And this programme uses Components and parts be conventional device, price is low, thus becomes well below the purchase of technical grade or army grade AC-DC power module This, thus can use on a large scale, meet business level AC-DC power module and use in cold or high temperature area.

The above is only exemplary embodiment of the present utility model, not for limiting protection model of the present utility model Enclosing, protection domain of the present utility model is determined by appended claim.

Claims (10)

1. an AC-DC power module, is characterized in that: includes heating unit (1), control unit (2) and is preset with a temperature The temperature detecting unit (3) of warning value；

Described temperature detecting unit (3) is for detecting whether the temperature within AC-DC power module reaches temperature warning value with defeated Go out temperature detection signal；

Described control unit (2) is coupled to temperature detecting unit (3) to receive temperature detection signal, and exports control signal；

Described heating unit (1) is coupled to control unit (2) to receive control signal；

When described temperature detecting unit (3) detects that the temperature within AC-DC power module reaches temperature warning value, described in add Hot cell (1) in response to control signal so that AC-DC power module is heated.

AC-DC power module the most according to claim 1, is characterized in that: described temperature detecting unit (3) includes that temperature is examined Survey portion (31), multi-harmonic-oscillations portion (32) and have the frequency lsb decoder (33) of a mid frequency, described temperature warning value is corresponding In described mid frequency；

Described temperature detecting part (31) is for detecting the variations in temperature within AC-DC power module with output temperature signal；

Described multi-harmonic-oscillations portion (32) is coupled to temperature detecting part (31) to receive temperature signal, and exports relative with temperature signal The oscillator signal answered；

Described frequency lsb decoder (33) is coupled to multi-harmonic-oscillations portion (32) to receive oscillator signal, and by oscillator signal and center frequency Rate compares rear output temperature detection signal to control unit (2)；

When described temperature detecting part (31) detects that the temperature within AC-DC power module reaches temperature warning value so that vibration is believed Number frequency when falling on the mid frequency of frequency lsb decoder (33), described control unit (2) controls heating unit (1) work.

AC-DC power module the most according to claim 2, is characterized in that: described multi-harmonic-oscillations portion (32) is 555 multi-resonant Swing device.

AC-DC power module the most according to claim 2, is characterized in that: be coupled with use on described frequency lsb decoder (33) Regulation portion (4) in regulation mid frequency size.

AC-DC power module the most according to claim 4, is characterized in that: described frequency lsb decoder (33) includes decoder LM567, the 3rd electric capacity (C3), the 4th electric capacity (C4), the 5th electric capacity (C5)；Described regulation portion (4) is variable resistance (RP1)；Solve 3 feet of code device LM567 are coupled to the outfan of multi-harmonic-oscillations portion (32), and 5 feet of decoder LM567 are coupled to variable resistance (RP1) one end, the other end of variable resistance (RP1) is coupled to the negative pole of power supply E by the 3rd electric capacity (C3)；Decoder 6 feet of LM567 are coupled on the node between variable resistance (RP1) and the 3rd electric capacity (C3)；4 feet of decoder LM567 couple In the positive pole of power supply E, 7 feet of decoder LM567 are coupled to the negative pole of power supply E, and 1 foot of decoder LM567 passes through the 4th electric capacity (C4) negative pole of power supply E it is coupled to；2 feet of decoder LM567 are coupled to the negative pole of power supply E by the 5th electric capacity (C5)；Decoding 8 feet of device LM567 are coupled to the positive pole that control unit (2) connects power supply E afterwards.

AC-DC power module the most according to claim 1, is characterized in that: described control unit is coupled with for protecting on (2) Hold heating unit (1) heated condition from lock section (5).

AC-DC power module the most according to claim 6, is characterized in that: be also coupled in described control unit (2) for Release the reset unit (6) from lock section (5) self-locking state.

AC-DC power module the most according to claim 7, is characterized in that: described reset unit (6) includes time delay portion (61) With enforcement division (62), the controlled end of described time delay portion (61) is coupled to control unit (2) to receive control signal and to export time delay Signal, described enforcement division (62) is coupled to time delay portion (61) with reception delay signal, and in response to time delayed signal to realize self-locking Portion (5) time-delay reset.

AC-DC power module the most according to claim 8, is characterized in that: be coupled with for adjusting on described time delay portion (61) The configuration part (7) of joint delay time.

AC-DC power module the most according to claim 1, is characterized in that: also including indicating member (8), described instruction is single Unit (8) is coupled to control unit (2) to receive control signal, and in response to control signal to realize indicating.