CN204009465U - For the relay pwm control circuit of panel type electronic thermostat - Google Patents
For the relay pwm control circuit of panel type electronic thermostat Download PDFInfo
- Publication number
- CN204009465U CN204009465U CN201420459826.XU CN201420459826U CN204009465U CN 204009465 U CN204009465 U CN 204009465U CN 201420459826 U CN201420459826 U CN 201420459826U CN 204009465 U CN204009465 U CN 204009465U
- Authority
- CN
- China
- Prior art keywords
- relay
- pin
- transistor
- control circuit
- parallel
- 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 relates to a kind of control circuit, particularly a kind of relay pwm control circuit for panel type electronic thermostat.Comprise first crystal triode and the second transistor, the grounded emitter of the emitter of described first crystal triode and the second transistor, the base stage of described first crystal triode is connected with the pin of singlechip chip one, the base stage of described the second transistor is connected with the pin of singlechip chip two, the collector of described first crystal triode is connected with direct supply by parallel circuit one, the collector of described the second transistor is connected with direct supply by parallel circuit two, described parallel circuit one is that diode one is in parallel with electromagnetic relay one, described parallel circuit two is that diode two is in parallel with electromagnetic relay two.The utility model control is convenient, precision is high, saves electric energy.
Description
Technical field
The utility model relates to a kind of control circuit, particularly a kind of relay PWM(Pulse Width Modulation for panel type electronic thermostat) control circuit.
Background technology
Panel type electronic thermostat generally adopts the break-make of DC level control electromagnetic relay power supply, and when relay closes, direct supply will exist always, and Energy Efficiency Ratio is lower, and control accuracy is poor.
Utility model content
In order to overcome the shortcoming of prior art, the utility model provides the relay pwm control circuit for panel type electronic thermostat.
Technical solutions of the utility model are as follows:
For the relay pwm control circuit of panel type electronic thermostat, comprise first crystal triode and the second transistor, the grounded emitter of the emitter of described first crystal triode and the second transistor, the base stage of described first crystal triode is connected with the pin of singlechip chip one, the base stage of described the second transistor is connected with the pin of singlechip chip two, the collector of described first crystal triode is connected with direct supply by parallel circuit one, the collector of described the second transistor is connected with direct supply by parallel circuit two, described parallel circuit one is that diode one is in parallel with electromagnetic relay one, described parallel circuit two is that diode two is in parallel with electromagnetic relay two.
Described singlechip chip model is ATMEGA168.
The pin one of described singlechip chip is ATMEGA168 pin 9, and the pin two of described singlechip chip is ATMEGA168 pin 1.
The utility model beneficial effect is: (1) replaces DC level to control the closure of electromagnetic relay with pwm pulse bandwidth modulation signals, the cycle of PWM and dutycycle can preset by program, therefore to the control of system more for convenience, control accuracy is higher; (2) DC level does not need to exist always, little power consumption, and Energy Efficiency Ratio is high, than relay DC level control circuit, can save 35% electric energy.
Brief description of the drawings
Below in conjunction with drawings and embodiments, the utility model is further illustrated.
Fig. 1 is the relay pwm control circuit schematic diagram of the utility model for panel type electronic thermostat.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Consult Fig. 1.
For the relay pwm control circuit of panel type electronic thermostat, comprise first crystal triode Q1 and the second transistor Q2, the emitter of described first crystal triode Q1 and the grounded emitter of the second transistor Q2, the base stage RL1 of described first crystal triode Q1 is connected with the pin one of singlechip chip, described the second base stage RL2 of transistor Q2 and the pin of singlechip chip two are connected, the collector of described first crystal triode is connected with direct supply by parallel circuit one, the collector of described the second transistor is connected with direct supply by parallel circuit two, described parallel circuit one is that diode one D1 is in parallel with electromagnetic relay one K1, described parallel circuit two is that diode two D2 are in parallel with electromagnetic relay two K2.
Described singlechip chip model is ATMEGA168.
The pin one of described singlechip chip is ATMEGA168 pin 9, and the pin two of described singlechip chip is ATMEGA168 pin 1.
Principle of work of the present utility model is, in the time of base stage RL1 and base stage RL2 access high level, the collector and emitter conducting of first crystal triode Q1, the also conducting of the collector and emitter of the second transistor Q2, now, electromagnetic relay one K1 and electromagnetic relay two K2 closures; Accordingly, in the time of base stage RL1 and base stage RL2 access low level, electromagnetic relay one K1 and electromagnetic relay K2 disconnect.Because electromagnetic relay coil produces magnetic in the situation that switching on and voltage meets sealing voltage, after electricity breaks, magnetic disappears needs the regular hour.Like this, the pwm control signal of singlechip chip output during to base stage RL1 and RL2, can regulate the frequency of triode switch by changing the cycle of pwm pulse signal, can regulate the switching time of triode by changing the width of pwm control signal or dutycycle.Therefore, by cycle, width or the dutycycle of rational adjusting pwm pulse signal, can ensure that relay K 1, K2 are closed all the time, and direct supply does not need to power to relay always, thus saves energy.
Above-mentioned drawings and Examples are only for the utility model is described, any under technical field those of ordinary skill suitable variation or modification that it is done, or use other flower types instead and make this technical change, all should be considered as not departing from the utility model patent category.
Claims (3)
1. for the relay pwm control circuit of panel type electronic thermostat, it is characterized in that: comprise first crystal triode and the second transistor, the grounded emitter of the emitter of described first crystal triode and the second transistor, the base stage of described first crystal triode is connected with the pin of singlechip chip one, the base stage of described the second transistor is connected with the pin of singlechip chip two, the collector of described first crystal triode is connected with direct supply by parallel circuit one, the collector of described the second transistor is connected with direct supply by parallel circuit two, described parallel circuit one is that diode one is in parallel with electromagnetic relay one, described parallel circuit two is that diode two is in parallel with electromagnetic relay two.
2. the relay pwm control circuit for panel type electronic thermostat according to claim 1, is characterized in that: described singlechip chip model is ATMEGA168.
3. the relay pwm control circuit for panel type electronic thermostat according to claim 2, is characterized in that: the pin one of described singlechip chip is ATMEGA168 pin 9, the pin two of described singlechip chip is ATMEGA168 pin 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459826.XU CN204009465U (en) | 2014-08-15 | 2014-08-15 | For the relay pwm control circuit of panel type electronic thermostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459826.XU CN204009465U (en) | 2014-08-15 | 2014-08-15 | For the relay pwm control circuit of panel type electronic thermostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204009465U true CN204009465U (en) | 2014-12-10 |
Family
ID=52049440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420459826.XU Active CN204009465U (en) | 2014-08-15 | 2014-08-15 | For the relay pwm control circuit of panel type electronic thermostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204009465U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916310A (en) * | 2020-09-01 | 2020-11-10 | 珠海格力电器股份有限公司 | Relay control circuit and electric appliance |
-
2014
- 2014-08-15 CN CN201420459826.XU patent/CN204009465U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916310A (en) * | 2020-09-01 | 2020-11-10 | 珠海格力电器股份有限公司 | Relay control circuit and electric appliance |
| CN111916310B (en) * | 2020-09-01 | 2021-07-20 | 珠海格力电器股份有限公司 | Relay control circuit and electric appliance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103873035A (en) | Timer-based PWM (Pulse-Width Modulation) control signal system for generating adjustable dead zone | |
| CN204009465U (en) | For the relay pwm control circuit of panel type electronic thermostat | |
| CN203870427U (en) | Low-electricity consumption control circuit in standby state | |
| CN203617218U (en) | Circuit for driving two delays through single I/O port | |
| CN104600660A (en) | Low-power-consumption short circuit protection circuit | |
| CN105098792A (en) | Intelligent capacitor capable of realizing on-line self-adaptive zero-crossing switching correction | |
| CN201577075U (en) | Circuit provided with energy-saving starting device | |
| CN204539512U (en) | Electromagnetic heater and the electromagnetic oven with it | |
| CN203337775U (en) | An IGBT status detecting circuit | |
| CN203217292U (en) | State machine-based multifunctional electronic appliance control circuit | |
| CN205015392U (en) | Zero -crossing detection circuit | |
| CN203504770U (en) | Supplementary heating circuit applied to refrigerator | |
| CN204013406U (en) | A kind of peak holding circuit | |
| CN201926699U (en) | Low-voltage circuit for power failure detection | |
| CN203444380U (en) | Output voltage control circuit | |
| CN207502953U (en) | Power supply sequencing control circuit | |
| CN202043034U (en) | Level shift circuit realizing shifting from 5v signal to 3.3v signal for singlechip system | |
| CN205157643U (en) | Take energy -conserving accounting device's energy -conserving cabinet | |
| CN204244073U (en) | A kind of controllable direct current power supply circuit | |
| CN203180885U (en) | Optical control circuit based on decimal counter pulse frequency divider | |
| CN203839998U (en) | Battery charging reverse-connection protecting circuit | |
| CN203206521U (en) | LED dimming control circuit | |
| CN203660866U (en) | Pulse top rush elimination circuit of pulse transformer | |
| CN203261314U (en) | Modulator circuit based on NAND gate integrated circuit | |
| CN203840610U (en) | LED circuit having stand-by power source circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |