CN206788673U - A kind of Simple constant-temperature control circuit - Google Patents
A kind of Simple constant-temperature control circuit Download PDFInfo
- Publication number
- CN206788673U CN206788673U CN201720465696.4U CN201720465696U CN206788673U CN 206788673 U CN206788673 U CN 206788673U CN 201720465696 U CN201720465696 U CN 201720465696U CN 206788673 U CN206788673 U CN 206788673U
- Authority
- CN
- China
- Prior art keywords
- temperature control
- control circuit
- resistance
- resistor
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of Simple constant-temperature control circuit, including mains connection, the transformer being connected with mains connection, the current rectifying and wave filtering circuit being connected with the transformer secondary coil and the mu balanced circuit being connected with the current rectifying and wave filtering circuit, also include constant temperature control circuit, the constant temperature control circuit includes triode, first resistor, second resistance, 3rd resistor, thermistor, controllable accurate source of stable pressure, unilateral diode and relay.Structure setting of the present utility model is reasonable, and using simple component so as to reduce cost of manufacture to a certain extent, stability in use is good and strong applicability.
Description
Technical field
The utility model belongs to constant-temperature circuit technical field, and in particular to a kind of Simple constant-temperature control circuit.
Background technology
Constant temperature control circuit type is more, it usually needs using being realized to MCU control chips, integrated circuit structure is more
Complexity, so as to add use cost, applicability and practicality are restricted, so design is a kind of real using easy component
Existing thermostatic control is one of technical barrier of solution required for those skilled in the art of the present technique.
The content of the invention
The purpose of this utility model is to provide the Simple constant-temperature control electricity that a kind of structure setting is reasonable and stability in use is good
Road.
The technical scheme for realizing the utility model purpose is a kind of Simple constant-temperature control circuit, including mains connection,
The transformer being connected with mains connection, the current rectifying and wave filtering circuit being connected with the transformer secondary coil and with
The mu balanced circuit that the current rectifying and wave filtering circuit is connected, in addition to constant temperature control circuit, the constant temperature control circuit include three poles
Pipe, first resistor, second resistance, 3rd resistor, thermistor, controllable accurate source of stable pressure, unilateral diode and relay, it is described
It is in parallel after 3rd resistor, second resistance and thermistor series connection with mu balanced circuit, the emitter stage of the triode is connected to surely
The positive pole of volt circuit, base stage are connected by first resistor with the negative electrode of controllable accurate source of stable pressure and colelctor electrode is unidirectional by second
Diode and relay coil are connected on the negative pole of mu balanced circuit, the plus earth of the controllable accurate source of stable pressure, it is described can
Control precision voltage regulator reference pole be connected on the tie point of second resistance and thermistor, the relay switch of the relay with
The primary coil both ends of transformer are connected in parallel on after heating element series connection.
The 3rd resistor is adjustable resistance.
The triode is PNP type triode.
Its operation principle is summarized as follows：AC power supplies is steady through transformer T1 and bridge heap D1, electric capacity C1, voltage-stabiliser tube Z1 rectifying and wave-filterings
After pressure, the D.C. regulated power supply of a suitable voltage is provided for control circuit below.Thermistor Rt1 is negative temperature coefficient heat
Quick resistance, with the rise of temperature, its resistance can reduce；Supply voltage passes through 3rd resistor R3, second resistance R2, thermistor
Rt1, intrinsic standoff ratio is formed, with the temperature according to setting and now thermistor Rt1 resistance, adjustment 3rd resistor R3, second resistance
R2 resistances, the voltage for dividing thermistor Rt1 are just equal to controllable accurate source of stable pressure U1 reference voltage 2.5V；When environment temperature
When degree is less than setting value, thermistor Rt1 resistances become big, partial pressure increase (being more than 2.5V), controllable accurate source of stable pressure U1 actions, the
One resistance R1 is grounded by controllable accurate source of stable pressure U1, and triode Q1 has base bias voltage and electric current and turned on, supply voltage
Relay K1 is powered by triode Q1 and the second unilateral diode D2, relay adhesive, switch conduction, heating element
EH1 starts work of generating heat, and improves environment temperature；When environment temperature is more than or equal to setting value, thermistor Rt1 resistances become
Small, partial pressure is reduced, and controllable accurate source of stable pressure U1 is failure to actuate, triode Q1 base stages there is no bias voltage and electric current and by relay
Device discharges, and switches off, heating element EH1 does not work, and reaches thermostatically controlled purpose.Adjust 3rd resistor R3 adjustable settings
Temperature.
The utility model has positive effect：Structure setting of the present utility model is reasonable, using simple component so as to
Cost of manufacture can be reduced to a certain extent, stability in use is good and strong applicability.
Brief description of the drawings
In order that content of the present utility model is more likely to be clearly understood, below according to specific embodiment and combine attached
Figure, is described in further detail to the utility model, wherein：
Fig. 1 is circuit diagram of the present utility model.
Embodiment
(embodiment 1)
Fig. 1 shows a kind of embodiment of the present utility model, and wherein Fig. 1 is circuit diagram of the present utility model.
See Fig. 1, a kind of Simple constant-temperature control circuit, including mains connection 1, be connected with mains connection
Transformer 2, the current rectifying and wave filtering circuit 3 being connected with the transformer secondary coil and be connected with the current rectifying and wave filtering circuit
Mu balanced circuit 4, in addition to constant temperature control circuit 5, the constant temperature control circuit 5 includes triode Q1, first resistor R1, second
Resistance R2,3rd resistor R3, thermistor RT1, controllable accurate source of stable pressure U1, unilateral diode D2 and relay K1, described
It is in parallel after three resistance R3, second resistance R2 and thermistor RT1 series connection with mu balanced circuit 4, the emitter stage of the triode Q1
It is connected to the positive pole of mu balanced circuit 4, base stage is connected by first resistor R1 with controllable accurate source of stable pressure U1 negative electrode and current collection
Pole is connected on the negative pole of mu balanced circuit 4 by the second unilateral diode D2 and relay K1 coils, the controllable accurate voltage stabilizing
Source U1 positive earth, the reference pole of the controllable accurate source of stable pressure U1 are connected to second resistance R2 and thermistor RT1's
On tie point, the relay switch of the relay K1 is connected in parallel on the primary coil both ends of transformer after being connected with heating element EH1.
The 3rd resistor is adjustable resistance.
The triode is PNP type triode.
Its operation principle is summarized as follows：AC power supplies is steady through transformer T1 and bridge heap D1, electric capacity C1, voltage-stabiliser tube Z1 rectifying and wave-filterings
After pressure, the D.C. regulated power supply of a suitable voltage is provided for control circuit below.Thermistor Rt1 is negative temperature coefficient heat
Quick resistance, with the rise of temperature, its resistance can reduce；Supply voltage passes through 3rd resistor R3, second resistance R2, thermistor
Rt1, intrinsic standoff ratio is formed, with the temperature according to setting and now thermistor Rt1 resistance, adjustment 3rd resistor R3, second resistance
R2 resistances, the voltage for dividing thermistor Rt1 are just equal to controllable accurate source of stable pressure U1 reference voltage 2.5V；When environment temperature
When degree is less than setting value, thermistor Rt1 resistances become big, partial pressure increase (being more than 2.5V), controllable accurate source of stable pressure U1 actions, the
One resistance R1 is grounded by controllable accurate source of stable pressure U1, and triode Q1 has base bias voltage and electric current and turned on, supply voltage
Relay K1 is powered by triode Q1 and the second unilateral diode D2, relay adhesive, switch conduction, heating element
EH1 starts work of generating heat, and improves environment temperature；When environment temperature is more than or equal to setting value, thermistor Rt1 resistances become
Small, partial pressure is reduced, and controllable accurate source of stable pressure U1 is failure to actuate, triode Q1 base stages there is no bias voltage and electric current and by relay
Device discharges, and switches off, heating element EH1 does not work, and reaches thermostatically controlled purpose.Adjust 3rd resistor R3 adjustable settings
Temperature.
Structure setting of the present utility model is reasonable, is fabricated to using simple component so as to reduce to a certain extent
This, stability in use is good and strong applicability.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need and unable to give all embodiments
It is exhaustive.And these belong to the obvious changes or variations that connotation of the present utility model is extended out and still fall within this practicality
New protection domain.
Claims (3)
1. a kind of Simple constant-temperature control circuit, including mains connection, the transformer being connected with mains connection,
The current rectifying and wave filtering circuit being connected with the transformer secondary coil and the mu balanced circuit being connected with the current rectifying and wave filtering circuit,
It is characterized in that：Also include constant temperature control circuit, the constant temperature control circuit includes triode, first resistor, second resistance, the
Three resistance, thermistor, controllable accurate source of stable pressure, unilateral diode and relay, the 3rd resistor, second resistance and temperature-sensitive
It is in parallel after resistant series with mu balanced circuit, the emitter stage of the triode is connected to the positive pole of mu balanced circuit, base stage by
One resistance is connected with the negative electrode of controllable accurate source of stable pressure and colelctor electrode is connected by the second unilateral diode with relay coil
On the negative pole of mu balanced circuit, the plus earth of the controllable accurate source of stable pressure, the reference pole of the controllable accurate source of stable pressure connects
It is connected on the tie point of second resistance and thermistor, the relay switch of the relay is connected in parallel on transformation after being connected with heating element
The primary coil both ends of device.
2. Simple constant-temperature control circuit according to claim 1, it is characterised in that：The 3rd resistor is adjustable resistance.
3. Simple constant-temperature control circuit according to claim 2, it is characterised in that：The triode is PNP type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720465696.4U CN206788673U (en) | 2017-04-28 | 2017-04-28 | A kind of Simple constant-temperature control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720465696.4U CN206788673U (en) | 2017-04-28 | 2017-04-28 | A kind of Simple constant-temperature control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206788673U true CN206788673U (en) | 2017-12-22 |
Family
ID=60709748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720465696.4U Active CN206788673U (en) | 2017-04-28 | 2017-04-28 | A kind of Simple constant-temperature control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206788673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306257A (en) * | 2018-04-07 | 2018-07-20 | 佛山市顺德区信辉达电子有限公司 | Three pole break-make leakage protecting plug of intelligent control type |
-
2017
- 2017-04-28 CN CN201720465696.4U patent/CN206788673U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306257A (en) * | 2018-04-07 | 2018-07-20 | 佛山市顺德区信辉达电子有限公司 | Three pole break-make leakage protecting plug of intelligent control type |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205755246U (en) | A kind of AC DC power module | |
| CN204740511U (en) | Thermostatic control circuit of birds, beasts and eggs hatching | |
| CN206788673U (en) | A kind of Simple constant-temperature control circuit | |
| CN104834335A (en) | Thermostatic control circuit for fowl egg hatching | |
| CN104597943A (en) | Constant temperature control device for hatch for chicken farm | |
| CN106658767A (en) | Incubator thermostatic control circuit | |
| CN107300936A (en) | A kind of prepared slices of Chinese crude drugs constant temperature storage device | |
| CN203690888U (en) | Electric leakage protection plug | |
| CN103775366A (en) | Power supply temperature sampling and fan control circuit and power supply device | |
| CN203456860U (en) | IPM module protection circuit with adjustable current and air conditioner | |
| CN201752273U (en) | Stepless temperature regulating hair drier | |
| CN104571198B (en) | A kind of temperature-control circuit | |
| CN204009644U (en) | A kind of device with the automatic linear adjustment stabilizer output voltage of temperature | |
| CN201212960Y (en) | Linear constant temperature controller | |
| CN107367069B (en) | A kind of air-source water heater voltage regulating and controlling circuit | |
| CN102967756A (en) | Heating circuit of electric energy meter for low temperature environment | |
| CN201955694U (en) | Temperature difference adjustable controller | |
| CN209782930U (en) | air-conditioning air pipe temperature sensor | |
| CN204331507U (en) | A kind of adjustable temperature-control circuit | |
| CN203788480U (en) | Circuit for controlling metal ceramic heating element through bidirectional silicon controlled rectifier | |
| CN204536951U (en) | A kind of electricity warm fan Intelligent heating circuit | |
| CN102594116B (en) | Power starting circuit | |
| CN203012012U (en) | Electric energy meter heating circuit used in low temperature environment | |
| CN207869019U (en) | A kind of stirring motor intelligent controller | |
| CN107790840B (en) | Electronic control system for global universal wide voltage input electric soldering iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230104 Address after: 529000 Room 203, Floor 2, Building 1, No. 21, Jintong Road, Tangxia Town, Pengjiang District, Jiangmen City, Guangdong Province Patentee after: Jiangmen Xiaosong Intelligent Technology Co.,Ltd. Address before: 529000 301, Floor 3, Building 2, No. 21, Jintong Road, Tangxia Town, Pengjiang District, Jiangmen City, Guangdong Province Patentee before: JIANGMEN PENGJIANG DISTRICT JINYING TECHNOLOGY Co.,Ltd. |