CN206249118U - A kind of temperature-control circuit of use full-wave rectification bridge design - Google Patents
A kind of temperature-control circuit of use full-wave rectification bridge design Download PDFInfo
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- CN206249118U CN206249118U CN201621338006.0U CN201621338006U CN206249118U CN 206249118 U CN206249118 U CN 206249118U CN 201621338006 U CN201621338006 U CN 201621338006U CN 206249118 U CN206249118 U CN 206249118U
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Abstract
The utility model discloses a kind of temperature-control circuit of use full-wave rectification bridge design, power circuit, temperature detection control circuit, temperature indicator circuit and electric heater control circuit are provided with；Power transformer T, commutation diode VD1~commutation diode VD4, electric capacity C1, electric capacity C2 and resistance R12, the primary side connection AC power and electric heater control circuit of power transformer T are provided with power circuit；Temperature sensor IC1, circuit of three-terminal voltage-stabilizing integrated IC2, resistance R1, resistance R2, potentiometer RP1 and resistance R3 are provided with temperature detection control circuit, when temperature adjustment control is carried out, realize that smooth electrodeless temperature adjustment is controlled using potentiometer RP1 so that user can carry out smooth computer heating control by controlled electric heater is interior during different temperature；When being powered, using bridge rectifier, RC π type filter designs, it is to avoid due to ripple voltage interference, and influence the stable operation of whole circuit.
Description
Technical field
The utility model is related to the fields such as temperature control, is a kind of temperature of use full-wave rectification bridge design specifically
Control circuit.
Background technology
Temperature (temperature) is the physical quantity for representing the cold and hot degree of object, it is microcosmic it is upper for be object molecule heat fortune
Dynamic severe degree.Some characteristics that temperature can only be varied with temperature by object are indirectly measured, and are used for measuring object temperature
The scale of number of degrees value is temperature scale.It defines the point of origin (zero point) of temperature and the base unit of measurement temperature.International unit
It is thermodynamic scale (K).At present in the world with other more temperature scales have Fahrenheit temperature scale (°F), Celsius' thermometric scale (DEG C) and the world
Practical temperature scale.From in terms of theory of molecular motion viewpoint, temperature is the mark of object molecular motion mean kinetic energy.Temperature is a large amount of molecule heat
Collective's performance of motion, contains statistical significance.For individual molecules, temperature is nonsensical.According to certain observable
Phenomenon (such as expansion of mercury), according to the measured cold and hot degree of one of several arbitrary scales.
According to certain observable phenomenon (such as expansion of mercury), according to the measured cold and hot journey of one of several arbitrary scales
Degree.Temperature is a kind of form of expression of intermolecular translational kinetic energy in object.Molecular motion is faster, i.e., temperature is higher, and object is warmmer；
Molecular motion is slower, i.e., temperature is lower, and object is colder.From in terms of theory of molecular motion viewpoint, temperature is that object molecular motion is averagely put down
The mark of dynamic kinetic energy, temperature is collective's performance of molecular thermalmotion, contains statistical significance.
The temperature oxygen species burning just made to a certain extent in air high turns to flame transmission heat, can cause matter melts
Melt, height to it is ultimate attainment just destroy material (quality) energy all；Temperature is low to a certain extent just can be with water or air or body
Moisture in (blood) be frozen into ice transmission it is cold, frost can cause material fragmentation, be as cold as it is ultimate attainment can fragmentation material mass-energy one
Cut even threat to life, it is possible to change movement (motion) speed of object.
For vacuum, temperature will appear as environment temperature, be object under the vacuum environment, it is intermolecular flat in object
A kind of form of expression of equal kinetic energy.In different vacuum of the object under different heat sources radiation, the temperature of object be it is different, this
Phenomenon is vacuum environment temperature.Such as, object is in the space close to the sun, and temperature is higher；Object from the sun farther out
In space, conversely, temperature is relatively low.This is influence of the solar radiation to space environment temperature.
Open loops or closed-loop control system of the temperature control temperature control using temperature as controlled variable.Its
Control method such as temperature scaling factor, the temperature scaling factor with flow feedforward, temperature is principal parameter, flow is second parameter
Serials control etc..In distributed parameter system, temperature control is that Temperature Distribution is target in controlling temperature field.
Temperature control system, using temperature as the feedback control system of controlled variable.In the production such as chemical industry, oil, metallurgy
In the physical process and chemical reaction of process, temperature is often a critically important amount, it is necessary to be controlled by exactly.Except this
Outside a little departments, temperature control system is also widely used for other field, is the class industrial control system having many uses.Temperature
Control system be commonly used to keeping temperature it is constant or make temperature according to certain regulated procedure change.
Utility model content
The purpose of this utility model is to provide a kind of temperature-control circuit of use full-wave rectification bridge design, is carrying out temperature
During degree regulation control, realize that smooth electrodeless temperature adjustment is controlled using potentiometer RP1 so that user can be by controlled electricity
Hot device is interior during different temperature to carry out smooth computer heating control；And the real-time temperature of part of the combination temperature sensor to being detected
Spend and detected, so that the temperature adjustment that carries out for reasonable benefit/risk controls to form the data foundation of science, carrying out temperature detection
During design on control circuit, it is core to use circuit of three-terminal voltage-stabilizing integrated, enables to temperature adjusting scope when being exported for rear class,
Stable state is kept, will not occur controlling the situation of error to occur due to jitter, when being powered, using bridge-type
Rectification, RC π type filter designs, enable to be loaded into temperature detection control circuit, temperature indicator circuit and electric heater control electricity
DC source in road is in a kind of state of ripple-free voltage disturbance, it is to avoid due to ripple voltage interference, and influence whole circuit
Stable operation, the features such as total has safe and reliable, easy to use.
The utility model is achieved through the following technical solutions：A kind of temperature-control circuit of use full-wave rectification bridge design,
It is provided with power circuit, temperature detection control circuit, temperature indicator circuit and electric heater control circuit, the power circuit difference
It is connected with temperature detection control circuit, temperature indicator circuit and electric heater control circuit, electric heater control circuit connection temperature
Indicating circuit, temperature indicator circuit is connected with temperature detection control circuit；Be provided with power circuit power transformer T,
Commutation diode VD1~commutation diode VD4, electric capacity C1, electric capacity C2 and resistance R12, the primary side connection of power transformer T are handed over
Stream power supply and electric heater control circuit, the positive pole of commutation diode VD1 connect negative pole and the power supply change of commutation diode VD4 respectively
Second end of the secondary end of depressor T, the negative pole of commutation diode VD1 connects the negative pole of commutation diode VD2, electric capacity C2 respectively
Second end of first end and resistance R12, the positive pole of commutation diode VD2 connects the first of the secondary end of power transformer T respectively
End and the negative pole of commutation diode VD3, the positive pole of commutation diode VD3 are connected and are grounded with the positive pole of commutation diode VD4；Electricity
Hinder R12 first end and electric capacity C1 first end be connected and respectively with temperature detection control circuit, temperature indicator circuit and electricity
Hot device control circuit is connected, and second end of electric capacity C1 and second end of electric capacity C2 are all grounded；In temperature detection control circuit
Temperature sensor IC1, circuit of three-terminal voltage-stabilizing integrated IC2, resistance R1, resistance R2, potentiometer RP1 and resistance R3 are provided with, it is described
The first end of resistance R1 connects the first end of resistance R3 and the first end of resistance R12 respectively, and second end of resistance R1 connects respectively
The first end and temperature indicator circuit of temperature sensor IC1, the second end ground connection of temperature sensor IC1 and and temperature indicator circuit
It is connected；Second end of resistance R3 and the input type part of circuit of three-terminal voltage-stabilizing integrated IC2, first fixing end of potentiometer RP1
It is connected with adjustable end and is connected with temperature indicator circuit, second fixing end of potentiometer RP1 is respectively with the first of resistance R2
End is connected with the adjustable end of circuit of three-terminal voltage-stabilizing integrated IC2, second end of resistance R2 and connecing for circuit of three-terminal voltage-stabilizing integrated IC2
Ground terminal is connected and is grounded.
It is further for the utility model is better achieved, digital display mode can be based on to the control range of Current Temperatures or
Current Temperatures are shown in real time, so that user knows, especially using following setting structures：In the temperature indicator circuit
LED driver chip IC 4, chip periphery circuit and LED light group are provided with, the chip periphery circuit includes voltage-stabiliser tube VS, electricity
Resistance R4, resistance R5, resistance R6 and resistance R7, the resistance R4 first end respectively with 6 pin, the voltage stabilizing of LED driver chip IC 4
First pole of pipe VS and the adjustable end of potentiometer RP1 are connected, and second end of resistance R4 is respectively with the 4 of LED driver chip IC 4
Pin is connected with the first end of resistance R5, second end of resistance R5 the second pole respectively with voltage-stabiliser tube VS and the first end of resistance R6
It is connected, second end of resistance R6 connects 2 pin and the ground connection of LED driver chip IC 4；7 pin of LED driver chip IC 4 lead to
8 pin of resistance R7 connection LED drivers chip IC 4 are crossed, 1 pin and 10~18 pin of LED driver chip IC 4 pass through LED light group
Circuit and power circuit is controlled to be connected with electric heater, 3 pin and 9 pin of the LED driver chip IC 4 are all with resistance R12's
First end is connected.
Further is that the utility model is better achieved, can be using LED (light emitting diode) timely by currently
Temperature controlling range or Current Temperatures show, especially using following setting structures：Light-emitting diodes are provided with LED light group
Pipe LED1~LED 10, the positive pole of the 1~LED of LED 9 connects and by electricity altogether
Resistance R8 is connected with the first end of resistance R12；1 pin connecting luminous diode LED1's of the LED driver chip IC 4 is negative
Pole, 11 pin~18 pin of the LED driver chip IC 4 distinguish corresponding and 2~light emitting diode of LED
The negative pole of LED9 is connected；10 pin of the LED driver chip IC 4 connect electric heater and control by LED 10
Circuit, and the negative pole of LED 10 is connected with 10 pin of LED driver chip IC 4, the negative pole of the voltage-stabiliser tube VS
6 pin of connection LED driver chip IC 4.
Further is that the utility model is better achieved so that the control sensitivity of electric heater control circuit is higher, no
The situation that can occur control error because controlling sensitivity reason occurs, so that for safe handling provides effective guarantee, especially
Using following setting structures：Single NOT gate logic circuit D1, three NOT gate logic circuits are provided with electric heater control circuit
D2, solid-state relay KN, A.C. contactor KM, resistance R9, resistance R10 and electric capacity C3, the resistance R9, resistance R10 and electric capacity
C3 is sequentially connected in series, and the non-connects end altogether connection resistance R12 of resistance R9 first end, the connects end altogether that resistance R9 is connected with resistance R10
The positive pole of connecting luminous diode LED10, connects end altogether and 2 pin of single NOT gate logic circuit D1 that resistance R10 is connected with electric capacity C3
It is connected, 4 pin of single NOT gate logic circuit D1 1 pin respectively with three NOT gate logic circuit D2,3 pin and 6 pin are connected, single not gate
Negative pole of 4 pin of 3 pin of logic circuit D1 and three NOT gate logic circuit D2 all with solid-state relay KN DC terminals is connected and connects
8 pin of ground, 5 pin of single NOT gate logic circuit D1 and three NOT gate logic circuit D2 connect and are connected with the first end of electric capacity C1, three altogether
2 pin of NOT gate logic circuit D2,5 pin and 7 pin are connect and are connected with the positive pole of solid-state relay KN DC terminals by resistance R11 altogether
Connect, the non-co- of electric capacity C3 connects end ground connection；4 pin of solid-state relay KN are by A.C. contactor KM and power transformer T primary sides
First end and the first phase line of AC power be connected, 3 pin of solid-state relay KN are normally opened with A.C. contactor KM respectively
One end of contact KM1, the second end of power transformer T primary sides and the second phase line of AC power are connected, normally open contact KM1
The other end be connected with the first end of power transformer T primary sides by electric heater EH.
Further is that the utility model is better achieved, especially using following setting structures：The electric capacity C3 is using electricity
Electric capacity is solved, and the positive pole of electric capacity C3 is connected with 2 pin of single NOT gate logic circuit D1.
It is further for the utility model is better achieved, existing ripe single NOT gate logic circuit, three non-can be applied
Gate logic and solid-state relay carry out building for circuit, especially using following setting structures：Single NOT gate logic circuit
D1 uses NL17SZ04 type list not gate logic chips, the three NOT gate logic circuits D2 to use the not gate logic core of NL37WZ04 types three
Piece, the solid-state relay KN uses SSP2110-1 type solid-state relays.
Further is that the utility model is better achieved, and existing ripe LED driver can be applied to carry out LED (hairs
Optical diode LED1~LED 10) driving, especially using following setting structures：The LED driver chip
IC4 uses LM3914 types LED points/line drive integrated circuit.
Further is that the utility model is better achieved, and can utilize existing ripe temperature sensor and three-terminal voltage-stabilizing
Circuit carries out building for circuit, especially using following setting structures：The temperature sensor IC1 uses LM335Z type TEMPs
Device integrated circuit, the circuit of three-terminal voltage-stabilizing integrated IC2 is using the end of TL43I types three precision integrated regulator.
The utility model compared with prior art, with advantages below and beneficial effect：
The utility model realizes smooth electrodeless temperature adjustment control when temperature adjustment control is carried out using potentiometer RP1
System so that user can carry out smooth computer heating control by controlled electric heater is interior during different temperature；And combination temperature
The real time temperature of part of the sensor to being detected is detected, so that the temperature adjustment that carries out for reasonable benefit/risk controls to form section
Data foundation, when temperature detection control circuit design is carried out, it is core to use circuit of three-terminal voltage-stabilizing integrated, is enabled to
Temperature adjusting scope keeps stable state when being exported for rear class, will not occur the feelings for controlling error due to jitter
Condition occurs, and when being powered, using bridge rectifier, RC π type filter designs, enables to be loaded into temperature detection control electricity
DC source in road, temperature indicator circuit and electric heater control circuit is in a kind of state of ripple-free voltage disturbance, it is to avoid by
In ripple voltage interference, and the stable operation of whole circuit is influenceed, the features such as total has safe and reliable, easy to use.
The utility model enters trip temperature and shows in real time using light emitting diode, so that convenient use person can know to work as in time
Whether preceding control range is in control range needed for oneself, it is to avoid due to control range error, and influence heater
Heating effect.
The utility model is based on NOT gate logic circuit and three NOT gate logic circuits are used cooperatively and designed, and between the two will not
There is internal interference, so that the control sensitivity of electric heater control circuit is higher, will not go out because controlling sensitivity reason
The situation of error is now controlled to occur, so that for safe handling provides effective guarantee.
Brief description of the drawings
Fig. 1 is the utility model circuit theory diagrams.
Specific embodiment
The utility model is described in further detail with reference to embodiment, but implementation method of the present utility model is not
It is limited to this.
Embodiment 1：
A kind of temperature-control circuit of use full-wave rectification bridge design, when temperature adjustment control is carried out, using potentiometer
RP1 realizes smooth electrodeless temperature adjustment control so that user can be interior during different temperature by controlled electric heater
Carry out smooth computer heating control；And the real time temperature of part of the combination temperature sensor to being detected is detected, so as to for rationally
The temperature adjustment that carries out of safety controls to form the data foundation of science, when temperature detection control circuit design is carried out, using three
End integrated regulator is core, enables to temperature adjusting scope when being exported for rear class, keeps stable state, will not be due to
Jitter and occur control error situation occur, when being powered, using bridge rectifier, RC π type filter designs, energy
Enough DC sources for causing to be loaded into temperature detection control circuit, temperature indicator circuit and electric heater control circuit are in a kind of nothing
The state of ripple voltage interference, it is to avoid due to ripple voltage interference, and the stable operation of whole circuit is influenceed, total has
It is safe and reliable, the features such as easy to use, as shown in figure 1, especially using following setting structures：It is provided with power circuit, temperature inspection
Observing and controlling circuit, temperature indicator circuit and electric heater control circuit, the power circuit respectively with temperature detection control circuit, temperature
Degree indicating circuit is connected with electric heater control circuit, electric heater control circuit connection temperature indicator circuit, temperature indicator circuit
It is connected with temperature detection control circuit；Power transformer T, commutation diode VD1~rectification two are provided with power circuit
Pole pipe VD4, electric capacity C1, electric capacity C2 and resistance R12, the primary side connection AC power and electric heater control electricity of power transformer T
Road, the positive pole of commutation diode VD1 connects the second of the negative pole of commutation diode VD4 and the secondary end of power transformer T respectively
End, the negative pole of commutation diode VD1 connects the of the negative pole of commutation diode VD2, the first end of electric capacity C2 and resistance R12 respectively
Two ends, the positive pole of commutation diode VD2 connects the first end and commutation diode VD3 of the secondary end of power transformer T respectively
Negative pole, the positive pole of commutation diode VD3 is connected and is grounded with the positive pole of commutation diode VD4；The first end and electric capacity of resistance R12
The first end of C1 be connected and respectively with temperature detection control circuit, temperature indicator circuit and electric heater control circuit be connected,
Second end of electric capacity C1 and second end of electric capacity C2 are all grounded；Be provided with temperature detection control circuit temperature sensor IC1,
Circuit of three-terminal voltage-stabilizing integrated IC2, resistance R1, resistance R2, potentiometer RP1 and resistance R3, the first end of the resistance R1 connect respectively
The first end of connecting resistance R3 and the first end of resistance R12, second end of resistance R1 connects the first end of temperature sensor IC1 respectively
And temperature indicator circuit, second end of temperature sensor IC1 is grounded and is connected with temperature indicator circuit；Second end of resistance R3
With the input type part of circuit of three-terminal voltage-stabilizing integrated IC2, first fixing end of potentiometer RP1 and adjustable end are connected and and temperature
Indicating circuit is connected, second fixing end of potentiometer RP1 respectively with the first end and circuit of three-terminal voltage-stabilizing integrated IC2 of resistance R2
Adjustable end be connected, second end of resistance R2 is connected and is grounded with the earth terminal of circuit of three-terminal voltage-stabilizing integrated IC2.
Embodiment 2：
The present embodiment is further optimized on the basis of above-described embodiment, further new for this practicality is better achieved
Type, can in real time be shown based on digital display mode to the control range or Current Temperatures of Current Temperatures, so that user knows,
As shown in figure 1, especially using following setting structures：LED driver chip IC 4, core is provided with the temperature indicator circuit
Piece peripheral circuit and LED light group, the chip periphery circuit include voltage-stabiliser tube VS, resistance R4, resistance R5, resistance R6 and resistance
The first end of R7, the resistance R4 6 pin respectively with LED driver chip IC 4, first pole of voltage-stabiliser tube VS and potentiometer RP1
Adjustable end be connected, second end of resistance R4 is connected with 4 pin of LED driver chip IC 4 and the first end of resistance R5 respectively
Connect, second end of resistance R5 is connected with second pole of voltage-stabiliser tube VS and the first end of resistance R6 respectively, second end of resistance R6
2 pin of connection LED driver chip IC 4 and ground connection；7 pin of LED driver chip IC 4 connect LED driver by resistance R7
8 pin of chip IC 4,1 pin and 10~18 pin of LED driver chip IC 4 control circuit and power supply by LED light group with electric heater
Circuit is connected, and the first end of 3 pin and 9 pin of the LED driver chip IC 4 all with resistance R12 is connected.
Embodiment 3：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this reality is better achieved
With new, timely Current Temperatures control range or Current Temperatures can be shown using LED (light emitting diode), such as
Shown in Fig. 1, especially using following setting structures：1~light emitting diode of LED is provided with LED light group
LED10, the positive pole of the 1~LED of LED 9 connects and by the first of resistance R8 and resistance R12 altogether
End is connected；The negative pole of 1 pin connecting luminous diode LED1 of the LED driver chip IC 4, the LED driver chip
The corresponding negative pole with 2~LED of LED 9 is connected 11 pin~18 pin of IC4 respectively；It is described
10 pin of LED driver chip IC 4 connect electric heater and control circuit, and LED 10 by LED 10
Negative pole be connected with 10 pin of LED driver chip IC 4, the negative pole of voltage-stabiliser tube VS connection LED driver chip IC 4
6 pin.
Embodiment 4：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this reality is better achieved
With new so that the control sensitivity of electric heater control circuit is higher, will not occur control error because controlling sensitivity reason
Situation occur, so as to effectively be ensured for safe handling is provided, as shown in figure 1, especially using following setting structures：Described
Single NOT gate logic circuit D1, three NOT gate logic circuit D2, solid-state relay KN, ac contactor are provided with electric heater control circuit
Device KM, resistance R9, resistance R10 and electric capacity C3, the resistance R9, resistance R10 and electric capacity C3 are sequentially connected in series, and resistance R9 non-co-
The first end that end connects resistance R12 is connect, the connects end altogether connecting luminous diode LED10 that resistance R9 is connected with resistance R10 is just
Pole, the connects end altogether that resistance R10 is connected with electric capacity C3 is connected with 2 pin of single NOT gate logic circuit D1, single NOT gate logic circuit D1
4 pin 1 pin respectively with three NOT gate logic circuit D2,3 pin and 6 pin be connected, 3 pin and three not gates of single NOT gate logic circuit D1
Negative pole of 4 pin of logic circuit D2 all with solid-state relay KN DC terminals is connected and is grounded, 5 pin of single NOT gate logic circuit D1
Connect altogether with 8 pin of three NOT gate logic circuit D2 and be connected with the first end of electric capacity C1,2 pin of three NOT gate logic circuit D2,5 pin and
7 pin are connect and are connected with the positive pole of solid-state relay KN DC terminals by resistance R11 altogether, and the non-co- of electric capacity C3 connects end ground connection；Gu
4 pin of state relay KN pass through A.C. contactor KM and the first end of power transformer T primary sides and the first phase of AC power
Line is connected, at the beginning of 3 pin of solid-state relay KN one end, power transformer T respectively with the normally open contact KM1 of A.C. contactor KM
Level second end at end and the second phase line of AC power are connected, and the other end of normally open contact KM1 passes through electric heater EH and power supply
The first end of transformer T primary sides is connected.
Embodiment 5：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this reality is better achieved
With new, as shown in figure 1, especially using following setting structures：The electric capacity C3 uses electrochemical capacitor, and the positive pole of electric capacity C3 with
2 pin of single NOT gate logic circuit D1 are connected.
Embodiment 6：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this reality is better achieved
With new, existing ripe single NOT gate logic circuit, three NOT gate logic circuits and solid-state relay can be applied to carry out circuit
Build, as shown in figure 1, especially using following setting structures：Single NOT gate logic circuit D1 uses NL17SZ04 type list not gates
Logic chip, the three NOT gate logic circuits D2 uses the not gate logic chip of NL37WZ04 types three, the solid-state relay KN to adopt
With SSP2110-1 type solid-state relays.
Embodiment 7：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this reality is better achieved
With new, existing ripe LED driver can be applied to carry out LED's (1~LED of LED 10)
Drive, as shown in figure 1, especially using following setting structures：The LED driver chip IC 4 is using LM3914 types LED points/line
Driver IC.
Embodiment 8：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this reality is better achieved
With new, building for circuit can be carried out using existing ripe temperature sensor and three-terminal voltage-stabilizing circuit, as shown in figure 1, special
Cai Yong not following setting structures：The temperature sensor IC1 uses LM335Z type temperature sensor integrated circuits, and three end is steady
Pressure IC 2 is using the end precision integrated regulator of TL43I types three.
When in use, the primary side of transformer T is connected with 220V AC powers, and alternating current 220V voltage drops through transformer T
The RC pi type filters that pressure, commutation diode VD1~commutation diode VD4 rectifications and electric capacity C1, electric capacity C2 and resistance R12 are constituted
After filtering, for temperature detection control circuit, temperature indicator circuit and electric heater control circuit provide operating voltage (preferred offer
The operating voltage of+9V).
Temperature sensor IC1 uses LM335Z type temperature sensor integrated circuits, is the integrated temperature of voltage-type positive temperature coefficient
Degree senser element, sensitivity is 10mY/ DEG C.At 0 DEG C, its output voltage is 2.73V, and at 100 DEG C, its output voltage is
3.73V.When dut temperature changes, the output voltage of temperature sensor IC1 and the input voltage of the pin of LED driver chip IC 4 the 5th
Synchronous change, after the 10 step voltage comparators treatment inside LED driver chip IC 4, driving LED 1~
LED 10 lights, and indicates temperature value；Preferably when setting, temperature controlling range is -20~80 DEG C.
In higher limit (when LED 10 non-lit up) of the dut temperature less than temperature-control range, temperature sensor
The 10 pin output high level of IC1, the 4 pin output low level of single NOT gate logic circuit D1,2 pin of three NOT gate logic circuit D2,5 pin
High level, the conducting of solid-state relay KN inside, A.C. contactor KM adhesives, the normally open contact of A.C. contactor KM are exported with 7 pin
KM1 is connected, electric heater EH energization work.
When dut temperature reaches the higher limit of temperature-control range, 1~LED of LED 10 is all
Light, 4 pin of single NOT gate logic circuit output high level, 2 pin of three NOT gate logic circuit D2,5 pin and 7 pin export low electricity
Flat, solid-state relay KN power-off cut-offs, A.C. contactor KM releases, the normally open contact KM1 of A.C. contactor KM disconnects, cut-out
The working power of electric heater EH, EH stops heating.
The above, is only preferred embodiment of the present utility model, and any formal limit is not done to the utility model
System, every any simple modification, equivalent variations made to above example according to technical spirit of the present utility model each fall within
Within protection domain of the present utility model.
Claims (10)
1. the temperature-control circuit that a kind of use full-wave rectification bridge is designed, it is characterised in that：It is provided with power circuit, temperature detection
Control circuit, temperature indicator circuit and electric heater control circuit, the power circuit respectively with temperature detection control circuit, temperature
Indicating circuit and electric heater control circuit are connected, electric heater control circuit connection temperature indicator circuit, temperature indicator circuit with
Temperature detection control circuit is connected；Power transformer T, commutation diode VD1~pole of rectification two are provided with power circuit
Pipe VD4, electric capacity C1, electric capacity C2 and resistance R12, the primary side connection AC power and electric heater control circuit of power transformer T,
The positive pole of commutation diode VD1 connects the second end of the negative pole of commutation diode VD4 and the secondary end of power transformer T respectively,
The negative pole of commutation diode VD1 connects the second of the negative pole of commutation diode VD2, the first end of electric capacity C2 and resistance R12 respectively
End, the positive pole of commutation diode VD2 connects the first end of the secondary end of power transformer T and bearing for commutation diode VD3 respectively
Pole, the positive pole of commutation diode VD3 is connected and is grounded with the positive pole of commutation diode VD4；The first end and electric capacity C1 of resistance R12
First end be connected and respectively with temperature detection control circuit, temperature indicator circuit and electric heater control circuit be connected, electricity
Second end at the second end and electric capacity C2 that hold C1 is all grounded；Temperature sensor IC1, three are provided with temperature detection control circuit
Integrated regulator IC2, resistance R1, resistance R2, potentiometer RP1 and resistance R3 are held, the first end of the resistance R1 is connected respectively
The first end of resistance R3 and the first end of resistance R12, second end of resistance R1 connect respectively temperature sensor IC1 first end and
Temperature indicator circuit, second end of temperature sensor IC1 is grounded and is connected with temperature indicator circuit；Second end of resistance R3 with
The input type part of circuit of three-terminal voltage-stabilizing integrated IC2, first fixing end of potentiometer RP1 and adjustable end are connected and refer to temperature
Show that circuit is connected, second fixing end of potentiometer RP1 respectively with the first end of resistance R2 and circuit of three-terminal voltage-stabilizing integrated IC2
Adjustable end is connected, and second end of resistance R2 is connected and is grounded with the earth terminal of circuit of three-terminal voltage-stabilizing integrated IC2.
2. the temperature-control circuit that a kind of use full-wave rectification bridge according to claim 1 is designed, it is characterised in that：Institute
State and be provided with temperature indicator circuit LED driver chip IC 4, chip periphery circuit and LED light group, the chip periphery circuit
First end including voltage-stabiliser tube VS, resistance R4, resistance R5, resistance R6 and resistance R7, the resistance R4 respectively with LED driver core
The adjustable end of 6 pin of piece IC4, first pole of voltage-stabiliser tube VS and potentiometer RP1 is connected, second end of resistance R4 respectively with LED
4 pin of driver chip IC4 are connected with the first end of resistance R5, second end of resistance R5 respectively with second pole of voltage-stabiliser tube VS
And the first end of resistance R6 is connected, second end of resistance R6 connects 2 pin and the ground connection of LED driver chip IC 4；LED drives
7 pin of device chip IC 4 connect 8 pin of LED driver chip IC 4 by resistance R7, and 1 pin of LED driver chip IC 4 and 10~
18 pin control circuit and power circuit to be connected by LED light group and electric heater, 3 pin and 9 of the LED driver chip IC 4
First end of the pin all with resistance R12 is connected.
3. the temperature-control circuit that a kind of use full-wave rectification bridge according to claim 2 is designed, it is characterised in that：
1~LED of LED 10, the 1~light emitting diode of LED are provided with LED light group
The positive pole of LED9 is connect and is connected with the first end of resistance R12 by resistance R8 altogether；1 pin of the LED driver chip IC 4 connects
The negative pole of sending and receiving optical diode LED1,11 pin~18 pin of the LED driver chip IC 4 distinguish corresponding and light emitting diode
The negative pole of 2~LEDs of LED 9 is connected；10 pin of the LED driver chip IC 4 pass through light emitting diode
LED10 connection electric heaters control circuit, and the negative pole of LED 10 to be connected with 10 pin of LED driver chip IC 4
Connect, 6 pin of the negative pole connection LED driver chip IC 4 of the voltage-stabiliser tube VS.
4. the temperature-control circuit that a kind of use full-wave rectification bridge according to claim 3 is designed, it is characterised in that：Institute
State electric heater control circuit in be provided with single NOT gate logic circuit D1, three NOT gate logic circuit D2, solid-state relay KN, exchange connect
Tentaculum KM, resistance R9, resistance R10 and electric capacity C3, the resistance R9, resistance R10 and electric capacity C3 are sequentially connected in series, and resistance R9's is non-
The first end of connects end altogether connection resistance R12, the connects end altogether connecting luminous diode LED10 that resistance R9 is connected with resistance R10 is just
Pole, the connects end altogether that resistance R10 is connected with electric capacity C3 is connected with 2 pin of single NOT gate logic circuit D1, single NOT gate logic circuit D1
4 pin 1 pin respectively with three NOT gate logic circuit D2,3 pin and 6 pin be connected, 3 pin and three not gates of single NOT gate logic circuit D1
Negative pole of 4 pin of logic circuit D2 all with solid-state relay KN DC terminals is connected and is grounded, 5 pin of single NOT gate logic circuit D1
Connect altogether with 8 pin of three NOT gate logic circuit D2 and be connected with the first end of electric capacity C1,2 pin of three NOT gate logic circuit D2,5 pin and
7 pin are connect and are connected with the positive pole of solid-state relay KN DC terminals by resistance R11 altogether, and the non-co- of electric capacity C3 connects end ground connection；Gu
4 pin of state relay KN pass through A.C. contactor KM and the first end of power transformer T primary sides and the first phase of AC power
Line is connected, at the beginning of 3 pin of solid-state relay KN one end, power transformer T respectively with the normally open contact KM1 of A.C. contactor KM
Level second end at end and the second phase line of AC power are connected, and the other end of normally open contact KM1 passes through electric heater EH and power supply
The first end of transformer T primary sides is connected.
5. the temperature-control circuit that a kind of use full-wave rectification bridge according to claim 4 is designed, it is characterised in that：It is described
Electric capacity C3 uses electrochemical capacitor, and the positive pole of electric capacity C3 to be connected with 2 pin of single NOT gate logic circuit D1.
6. the temperature-control circuit that a kind of use full-wave rectification bridge according to claim 4 or 5 is designed, it is characterised in that：
Single NOT gate logic circuit D1 uses NL17SZ04 type list not gate logic chips, the three NOT gate logic circuits D2 to use
The not gate logic chip of NL37WZ04 types three, the solid-state relay KN uses SSP2110-1 type solid-state relays.
7. the temperature-control circuit that a kind of use full-wave rectification bridge according to claim 6 is designed, it is characterised in that：It is described
LED driver chip IC 4 is using LM3914 types LED points/line drive integrated circuit.
8. the temperature-control circuit that a kind of use full-wave rectification bridge according to claim 6 is designed, it is characterised in that：It is described
Temperature sensor IC1 uses LM335Z type temperature sensor integrated circuits, the circuit of three-terminal voltage-stabilizing integrated IC2 to use TL43I
The end of type three precision integrated regulator.
9. according to claim 1-5, a kind of temperature-control circuit of the use full-wave rectification bridge design described in 7 any one, it is special
Levy and be：The temperature sensor IC1 uses LM335Z type temperature sensor integrated circuits, the circuit of three-terminal voltage-stabilizing integrated
IC2 is using the end of TL43I types three precision integrated regulator.
10. the temperature-control circuit that a kind of use full-wave rectification bridge according to claim any one of 2-5 is designed, its feature
It is：The LED driver chip IC 4 is using LM3914 types LED points/line drive integrated circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621338006.0U CN206249118U (en) | 2016-12-07 | 2016-12-07 | A kind of temperature-control circuit of use full-wave rectification bridge design |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621338006.0U CN206249118U (en) | 2016-12-07 | 2016-12-07 | A kind of temperature-control circuit of use full-wave rectification bridge design |
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| CN206249118U true CN206249118U (en) | 2017-06-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106444921A (en) * | 2016-12-07 | 2017-02-22 | 重庆依凯科技有限公司 | Temperature control circuit designed by adopting full-wave rectifier bridge |
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2016
- 2016-12-07 CN CN201621338006.0U patent/CN206249118U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106444921A (en) * | 2016-12-07 | 2017-02-22 | 重庆依凯科技有限公司 | Temperature control circuit designed by adopting full-wave rectifier bridge |
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Granted publication date: 20170613 Termination date: 20181207 |