CN207601651U - A kind of fish tank water temperature automatic control circuit - Google Patents
A kind of fish tank water temperature automatic control circuit Download PDFInfo
- Publication number
- CN207601651U CN207601651U CN201720777358.4U CN201720777358U CN207601651U CN 207601651 U CN207601651 U CN 207601651U CN 201720777358 U CN201720777358 U CN 201720777358U CN 207601651 U CN207601651 U CN 207601651U
- Authority
- CN
- China
- Prior art keywords
- rectifier bridge
- base chip
- output terminal
- negative output
- pin
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of fish tank water temperature automatic control circuits,Including transformer T,The external alternating current of primary side of the transformer T,Heating tube G is in series on alternating current,The contact switch of relay,The primary side of transformer T is connected with the input terminal of rectifier bridge VD,The positive output end of rectifier bridge VD respectively with base chip when 555 the 4th,8 pins are connected,The positive output end of rectifier bridge VD passes through the 6th of base chip during resistance R1 and 555,7 pins are connected,The one end of the positive output end of rectifier bridge VD also with slide rheostat RP1 is connected,The other end of slide rheostat RP1 is connected by thermistor RT with one end of resistance R2,2nd pin of base chip and slide rheostat RP1 when 555,Thermistor RT is connected with junction,The 5th pin of base chip is connected with the coil of relay when 555.The utility model circuit is simple, of low cost, easy to implement, has a good application prospect.
Description
Technical field
The utility model is related to a kind of fish tank water temperature automatic control circuits, belong to field of intelligent control technology.
Background technology
As the improvement of people's living standards, view fish can be supported in household rooms to improve the temperament and interest in room and mould people
Sentiment.For some tropic fishes, need to ensure fish tank water temperature, just can ensure that their normal growth.At present, on the market
Intelligent temperature control fish jar, circuit is complicated, and cost is higher, without using the use of average family, how to design a kind of simple and reliable, cost
Cheap fish tank water temperature automatic control circuit is current problem to be solved.
Utility model content
The utility model aim is to overcome existing intelligent temperature control fish jar, and circuit is complicated, and cost is higher, without using general
The problem of long and deep friendship between two families front yard uses.The fish tank water temperature automatic control circuit of the utility model acquires the temperature of fish jar by thermistor,
And when passing through 555 base chip controls relay contact switch break-make, control heating tube is to the heating of fish jar or stops heating,
Circuit is simple, of low cost, easy to implement, has a good application prospect.
In order to achieve the above object, technical solution is used by the utility model：
A kind of fish tank water temperature automatic control circuit, including transformer T, the external alternating current of primary side of the transformer T is described
The contact switch J of heating tube G, relay K are in series on alternating current,
The primary side of the transformer T is connected with the input terminal of rectifier bridge VD, the positive output end point of the rectifier bridge VD
It is not connected with the 4th of base chip when 555,8 pins, the positive output end of the rectifier bridge VD passes through base core during resistance R1 and 555
Piece the 6th, 7 pins be connected, the one end of the positive output end of the rectifier bridge VD also with slide rheostat RP1 is connected, described
The other end of slide rheostat RP1 is connected by thermistor RT with one end of resistance R2, the other end of the resistance R2 with
The negative output terminal of rectifier bridge VD is connected, the 2nd pin of base chip and slide rheostat RP1 when described 555, thermistor RT
Junction is connected, and the 7th pin of base chip is also connected by capacitance C1 with the negative output terminal of rectifier bridge VD when described 555,
The 1st pin of base chip is connected with the negative output terminal of rectifier bridge VD when described 555, when described 555 the 3rd pin of base chip with
The anode of light emitting diode D1 is connected, and the cathode of the light emitting diode D1 is by the coil of relay K with rectifier bridge VD's
Negative output terminal is connected, and the cathode of the cathode of the light emitting diode D1 also with diode D2 is connected, the diode D2's
Anode is connected with the negative output terminal of rectifier bridge VD.
A kind of aforementioned fish tank water temperature automatic control circuit is provided with simultaneously between the positive and negative output terminal of the rectifier bridge VD
It is associated with filter capacitor C2.
A kind of aforementioned fish tank water temperature automatic control circuit, the positive output end of the rectifier bridge VD also with voltage stabilizing chip 7805
Input terminal be connected, the output terminal of the voltage stabilizing chip 7805 is connected with the 4th of base chip when 555 the, 8 pins, described steady
The ground terminal of pressure chip 7805 is connected by zener diode D3 with the negative output terminal of rectifier bridge VD, the zener diode D3
Anode be connected with the negative output terminal of rectifier bridge VD.
A kind of aforementioned fish tank water temperature automatic control circuit, the voltage between the positive and negative output terminal of the rectifier bridge VD are
12V。
A kind of aforementioned fish tank water temperature automatic control circuit is in series with fuse F1 on the alternating current.
A kind of aforementioned fish tank water temperature automatic control circuit, the power of the heating tube G is between 200-400W.
The beneficial effects of the utility model are：The fish tank water temperature automatic control circuit of the utility model, passes through thermistor
The break-make of base chip controls relay contact switch when acquiring the temperature of fish jar, and passing through 555, control heating tube add fish jar
Heat stops heating, and circuit is simple, of low cost, easy to implement, has a good application prospect.
Description of the drawings
Fig. 1 is the structure diagram of the fish tank water temperature automatic control circuit of the utility model.
Specific embodiment
Below in conjunction with Figure of description, the utility model is described further.Following embodiment is only used for more clear
Illustrate to Chu the technical solution of the utility model, and cannot the scope of protection of the utility model be limited with this.
As shown in Figure 1, a kind of fish tank water temperature automatic control circuit, including transformer T, outside the primary side of the transformer T
Alternating current is connect, the contact switch J of heating tube G, relay K are in series on the alternating current,
The primary side of the transformer T is connected with the input terminal of rectifier bridge VD, the positive output end point of the rectifier bridge VD
It is not connected with the 4th of base chip when 555,8 pins, the positive output end of the rectifier bridge VD passes through base core during resistance R1 and 555
Piece the 6th, 7 pins be connected, the one end of the positive output end of the rectifier bridge VD also with slide rheostat RP1 is connected, described
The other end of slide rheostat RP1 is connected by thermistor RT with one end of resistance R2, the other end of the resistance R2 with
The negative output terminal of rectifier bridge VD is connected, the 2nd pin of base chip when described 555（Input terminal）With slide rheostat RP1, temperature-sensitive
The junction of resistance RT is connected, slide rheostat RP1, can adjust thermistor RT sensitivity, and thermistor RT is adjusted
The temperature of base chip operation when triggering 555,22 degrees Celsius are preferably, when described 555 the 7th pin of base chip also by capacitance C1 with
The negative output terminal of rectifier bridge VD is connected, and the 1st pin of base chip is connected with the negative output terminal of rectifier bridge VD when described 555,
3rd pin of base chip when described 555（Output terminal）It is connected with the anode of light emitting diode D1, the light emitting diode D1's
Cathode is connected by the coil of relay K with the negative output terminal of rectifier bridge VD, and the cathode of the light emitting diode D1 is also with two
The cathode of pole pipe D2 is connected, and the anode of the diode D2 is connected with the negative output terminal of rectifier bridge VD.
It is provided between the positive and negative output terminal of the rectifier bridge VD and is parallel with filter capacitor C2, the rectifier bridge VD is just
Input terminal of the output terminal also with voltage stabilizing chip 7805 is connected, the output terminal of the voltage stabilizing chip 7805 and base chip when 555
4th, 8 pins are connected, and the ground terminal of the voltage stabilizing chip 7805 passes through the negative output terminal of zener diode D3 and rectifier bridge VD
It is connected, the anode of the zener diode D3 is connected with the negative output terminal of rectifier bridge VD, increases voltage stabilizing and filter function,
Ensure the stability of the positive and negative output terminal output voltage of rectifier bridge VD, the voltage between the positive and negative output terminal of the rectifier bridge VD
For 12V, the operating voltage of base chip when providing 555 ensures its normal table operation.
Fuse F1 is in series on the alternating current, fuse F1 can prevent mains current excessive, disconnect power supply, prevent from burning
Bad heating tube G.
The power of the heating tube G is between 200-400W, quick to heat when guarantee needs heating.
The fish tank water temperature automatic control circuit of the utility model, operation principle are as follows：By rectifier bridge VD rectifications, and voltage stabilizing
And after filtering, to the operating voltage of base chip 12V when 555, base chip is connected into monostable flipflop when 555, transient state 11s, if
Controlled at 22 DEG C, realized by adjusting slide rheostat RP1, when fish jar temperature is less than 22 DEG C, thermistor RT resistance values
Raising, 2 feet of base chip are low level when 555, then 3 feet become high level output, the coil of relay K from low level output
Conducting, contact switch J are attracted, and heating tube G is begun to warm up, when 555 during the 3rd pin output high level of base chip, luminous two
Pole pipe D1 is lighted, it was demonstrated that heating tube G is just in heating work；When temperature is restored to 22 DEG C, thermistor RT becomes smaller, when 555
2 feet of base chip are in high level, and 3 feet export low level, the coil losing electricity of relay K, and contact switch J is disconnected, and heating stops,
When 555 during the 3rd pin output level of base chip, light emitting diode D1 extinguishes, it was demonstrated that heating tube G is just in heating work.
In conclusion the fish tank water temperature automatic control circuit of the utility model, the temperature of fish jar is acquired by thermistor,
And when passing through 555 base chip controls relay contact switch break-make, control heating tube is to the heating of fish jar or stops heating,
Circuit is simple, of low cost, easy to implement, has a good application prospect.
The basic principle, main features and advantages of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this
The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change
And improvement, these various changes and improvements fall within the scope of the claimed invention.The utility model requires protection scope
It is defined by the appending claims and its equivalent thereof.
Claims (1)
1. a kind of fish tank water temperature automatic control circuit, it is characterised in that：Including transformer T, the primary side of the transformer T is external
Alternating current is in series with the contact switch J of heating tube G, relay K on the alternating current,
The primary side of the transformer T is connected with the input terminal of rectifier bridge VD, the positive output end of the rectifier bridge VD respectively with
When 555 base chip the 4th, 8 pins be connected, the positive output end of the rectifier bridge VD passes through base chip during resistance R1 and 555
6th, 7 pins are connected, and the one end of the positive output end of the rectifier bridge VD also with slide rheostat RP1 is connected, the slip
The other end of rheostat RP1 is connected by thermistor RT with one end of resistance R2, the other end of the resistance R2 and rectification
The negative output terminal of bridge VD is connected, the connection of the 2nd pin of base chip and slide rheostat RP1, thermistor RT when described 555
Place is connected, and the 7th pin of base chip is also connected by capacitance C1 with the negative output terminal of rectifier bridge VD when described 555, described
The 1st pin of base chip is connected with the negative output terminal of rectifier bridge VD when 555, and the 3rd pin of base chip is with shining when described 555
The anode of diode D1 is connected, and the cathode of the light emitting diode D1 is defeated by the coil of relay K and bearing for rectifier bridge VD
Outlet is connected, and the cathode of the cathode of the light emitting diode D1 also with diode D2 is connected, the anode of the diode D2
It is connected with the negative output terminal of rectifier bridge VD, is provided between the positive and negative output terminal of the rectifier bridge VD and is parallel with filter capacitor
Input terminal of the positive output end of C2, the rectifier bridge VD also with voltage stabilizing chip 7805 is connected, the voltage stabilizing chip 7805 it is defeated
Outlet and base chip when 555 the 4th, 8 pins be connected, the ground terminal of the voltage stabilizing chip 7805 by zener diode D3 with
The negative output terminal of rectifier bridge VD is connected, and the anode of the zener diode D3 is connected with the negative output terminal of rectifier bridge VD, institute
It is 12V to state the voltage between the positive and negative output terminal of rectifier bridge VD, and fuse F1, the heating tube G are also in series on the alternating current
Power between 200-400W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720777358.4U CN207601651U (en) | 2017-06-30 | 2017-06-30 | A kind of fish tank water temperature automatic control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720777358.4U CN207601651U (en) | 2017-06-30 | 2017-06-30 | A kind of fish tank water temperature automatic control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207601651U true CN207601651U (en) | 2018-07-10 |
Family
ID=62753082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720777358.4U Expired - Fee Related CN207601651U (en) | 2017-06-30 | 2017-06-30 | A kind of fish tank water temperature automatic control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207601651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113288571A (en) * | 2021-06-18 | 2021-08-24 | 杨建安 | Control circuit of medical device for gas hot compress of perineum |
-
2017
- 2017-06-30 CN CN201720777358.4U patent/CN207601651U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113288571A (en) * | 2021-06-18 | 2021-08-24 | 杨建安 | Control circuit of medical device for gas hot compress of perineum |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207601651U (en) | A kind of fish tank water temperature automatic control circuit | |
| CN203178830U (en) | Control circuit of indoor warming and drying device, and controlled towel rack and heating blanket | |
| CN103199392B (en) | There is the AC socket of overvoltage protection | |
| CN107239085A (en) | A kind of fish tank water temperature automatic control circuit | |
| CN202513549U (en) | Abnormality protection device of warm water squatting pan | |
| CN204794736U (en) | Novel half -wave rectifier circuit | |
| CN204406088U (en) | Safety energy-saving controller for home appliance | |
| CN204557248U (en) | A kind of electron temperature automaton | |
| CN205335547U (en) | Electric water heater socket that economizes on electricity | |
| CN202005023U (en) | Mains input LED driving circuit with low power consumption | |
| CN104901280B (en) | A kind of intelligent protection circuit | |
| CN205406872U (en) | Overvoltage protection power receptacle | |
| CN104284492A (en) | Automatic infrared control circuit of energy-saving lamp belt | |
| CN105514718A (en) | Power saving socket of electric water heater | |
| CN202749798U (en) | Novel energy saving electrical load limiter | |
| CN207100196U (en) | Fish jar heater | |
| CN201518410U (en) | Automatic electricity-limiting controller | |
| CN202995491U (en) | Simple constant-temperature control circuit | |
| CN205160495U (en) | Zero power consumption standby touches power down switch | |
| CN208271049U (en) | A kind of electric blanket temperature controller | |
| CN205809579U (en) | Electric kettle control circuit and electric kettle | |
| CN203705991U (en) | Automatic heat-preservation heating circuit | |
| CN206102491U (en) | Heating control circuit and broken wall machine | |
| CN207516848U (en) | A kind of bathtub constant temperature control circuit | |
| CN204786738U (en) | Room heater control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 Termination date: 20190630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |