CN206379885U - A kind of supply unit for two wires gate control system - Google Patents
A kind of supply unit for two wires gate control system Download PDFInfo
- Publication number
- CN206379885U CN206379885U CN201720088198.2U CN201720088198U CN206379885U CN 206379885 U CN206379885 U CN 206379885U CN 201720088198 U CN201720088198 U CN 201720088198U CN 206379885 U CN206379885 U CN 206379885U
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- power
- isolation transformer
- control system
- gate control
- wires
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Abstract
It is used for two wires gate control system supply unit the utility model discloses one kind, it supplies AC power, power frequency isolation transformer and low ripple high frequency switch power including power network, power network supplies the first winding of AC power connection power frequency isolation transformer, the secondary winding of power frequency isolation transformer connects the input of low ripple high frequency switch power, the output end connection two wires gate control system of low ripple high frequency switch power.The magnetic core of power frequency isolation transformer accomplishes high magnetic efficiently through special processing, and device has isolated windings between the first winding and secondary winding of power frequency isolation transformer, and the capacity of power frequency isolation transformer is more than one times of the low ripple output power of high-frequency switching power supply.The utility model can effectively improve the speech quality of two wires gate control system, and interference of the power supply to image can drop to the two wires gate control system of cun screen of the level of linear power supply, especially 10.
Description
Technical field
The utility model is related to clean power supply, power filter field, more particularly to two wires gate inhibition's supply unit.
Background technology
In the utilization of building talkback two wires gate control system, for the call realized and video effect, the requirement to power supply
Compare special.High frequency switch power to the interference of two wires gate control system than larger, so many electricity matched somebody with somebody to two wires gate control system
Source, mostly using linear power supply.The efficiency of linear power supply is low, and load regulation is low, and reliability is low, does not reach wanting for Energy Star
Ask.
High frequency switch power, with the gate control system of two wires, it is necessary to solve interference problem, it is understood that HF switch
Operationally, itself just produces very big High-frequency Interference to power supply, these disturb we can by existing technological means, plus
To suppress.Such as ripple peak-to-peak value can be dropped within several millivolts, and weighted noise and broadband noise can also drop to the standard of country
Within.But so is exactly, Switching Power Supply is to the interference of two wires gate control system again without the level for dropping to linear power supply.This be for
What, passes through substantial amounts of experiment, it has been found that power network has inherently been superimposed many intermediate frequency clutters.Also some harmonic waves.This
A little clutters are largely by being produced with the electrical equipment of electric unit.How this problem is solved, and one kind of our company's research and development is used for two
Line gate control system supply unit can effectively solve this problem.
The content of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of for two wires gate inhibition
System power supply device.Effectively solve the sordid problem of two wires gate control system power supply.
The technical scheme that the utility model is used is：One kind is used for two wires gate control system supply unit, and it includes power network
Supplied AC power, it also includes power frequency isolation transformer and high frequency switch power, and power network supplies AC power to connect the work
The first winding of frequency isolating transformer, the secondary winding of the power frequency isolation transformer connects the input of the high frequency switch power
End, the output end connection two wires gate control system of the high frequency switch power.
The high frequency switch power is low ripple high frequency switch power.
The magnetic core of the power frequency isolation transformer accomplishes high magnetic efficiently through special processing, the power frequency isolation transformer
Device has isolated windings between first winding and secondary winding, and the isolated windings can be wire coiling or non-magnetic
Metal material processing is formed, and the isolated windings palpus good earth, the capacity of the power frequency isolation transformer is more than the low line
One times of ripple output power of high-frequency switching power supply.
The beneficial effects of the utility model are：By the utility model, it including power network supplies AC power, and it also includes
Power frequency isolation transformer and high frequency switch power, power network supply AC power connect the power frequency isolation transformer once around
Group, the secondary winding of the power frequency isolation transformer connects the input of the high frequency switch power, the high frequency switch power
Output end connection two wires gate control system.The high frequency switch power is low ripple high frequency switch power.The power frequency isolation becomes
The magnetic core of depressor accomplishes that high magnetic efficiently, is filled between the first winding and secondary winding of the power frequency isolation transformer through special processing
Be equipped with isolated windings, the isolated windings can be that wire coiling or non-magnetic metal material processing are formed, it is described every
From winding palpus good earth, the capacity of the power frequency isolation transformer is more than the low ripple output power of high-frequency switching power supply
One times.So the utility model can effectively solve the sordid problem of two wires gate control system power supply.
Brief description of the drawings
Fig. 1 is the utility model circuit structure principle schematic.
Embodiment
As shown in figure 1, the utility model it supply AC power including power network, it also include power frequency isolation transformer and height
Frequency Switching Power Supply, power network supplies the first winding of the AC power connection power frequency isolation transformer, and the power frequency isolates transformation
The secondary winding of device connects the input of the high frequency switch power, the output end connection two wires gate inhibition of the high frequency switch power
System,
The high frequency switch power is low ripple high frequency switch power.
The magnetic core of the power frequency isolation transformer accomplishes high magnetic efficiently through special processing, the power frequency isolation transformer
Device has isolated windings between first winding and secondary winding, and the isolated windings can be wire coiling or non-magnetic
Metal material processing is formed, and the isolated windings palpus good earth, the capacity of the power frequency isolation transformer is more than the low line
One times of ripple output power of high-frequency switching power supply.
In the present embodiment, the utility model passes through the input in high frequency switch power, one power frequency isolation transformation of access
Device, can effectively improve the speech quality of two wires gate control system, and interference of the power supply to image can drop to the water of linear power supply
It is flat, the two wires gate control system of especially 10 cun screens.
Claims (3)
1. one kind is used for two wires gate control system supply unit, it supplies AC power including power network, it is characterised in that：It also includes
Power frequency isolation transformer and high frequency switch power, power network supply AC power connect the power frequency isolation transformer once around
Group, the secondary winding of the power frequency isolation transformer connects the input of the high frequency switch power, the high frequency switch power
Output end connection two wires gate control system.
2. according to claim 1 be used for two wires gate control system supply unit, it is characterised in that：The high frequency switch power
For low ripple high frequency switch power.
3. according to claim 1 be used for two wires gate control system supply unit, it is characterised in that：The power frequency isolates transformation
The magnetic core of device accomplishes high magnetic efficiently, device between the first winding and secondary winding of the power frequency isolation transformer through special processing
There are isolated windings, the isolated windings can be that wire coiling or non-magnetic metal material processing are formed, the isolation
Winding palpus good earth, the capacity of the power frequency isolation transformer is more than the one of the low ripple output power of high-frequency switching power supply
Times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720088198.2U CN206379885U (en) | 2017-01-23 | 2017-01-23 | A kind of supply unit for two wires gate control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720088198.2U CN206379885U (en) | 2017-01-23 | 2017-01-23 | A kind of supply unit for two wires gate control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206379885U true CN206379885U (en) | 2017-08-04 |
Family
ID=59400863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720088198.2U Active CN206379885U (en) | 2017-01-23 | 2017-01-23 | A kind of supply unit for two wires gate control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206379885U (en) |
-
2017
- 2017-01-23 CN CN201720088198.2U patent/CN206379885U/en active Active
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