CN209451154U - A kind of Baby Care machine blue light lamp drive circuit - Google Patents
A kind of Baby Care machine blue light lamp drive circuit Download PDFInfo
- Publication number
- CN209451154U CN209451154U CN201820127379.6U CN201820127379U CN209451154U CN 209451154 U CN209451154 U CN 209451154U CN 201820127379 U CN201820127379 U CN 201820127379U CN 209451154 U CN209451154 U CN 209451154U
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- Prior art keywords
- capacitor
- diode
- blue
- constant current
- care machine
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Abstract
The utility model discloses a kind of Baby Care machine blue light lamp drive circuits, including first resistor to the 4th resistance, first capacitor is to the 4th capacitor, first diode is to the 4th diode, constant current chip, inductance, voltage-stabiliser tube and blue-ray light, compared with prior art, the utility model has been internally integrated the LNK304 constant current chip of switching tube, cooperate perimeter capacitance resistance circuit, it is capable of providing constant electric current output, the blue-ray light of driving Baby Care machine that can be stable, improve the service efficiency of Baby Care machine blue-ray light, linguistic term for Baby Care machine blue-ray light lays the foundation, it has the value of popularization and application.
Description
Technical field
The utility model relates to a kind of medical instrument more particularly to a kind of Baby Care machine blue light lamp drive circuits.
Background technique
Baby is to solve that Infant with Jaundice is excessively high and a kind of medical technology means for taking according to blue pass, and in the prior art, blue
Light lamp needs the stabilization of constant operation and blue light strength the blue light of Baby Care machine could be had stabilization to the treatment of baby
Conditioning effect therefore just need the output of constant current to the driving of blue-ray light, could good driving blue-ray light.
Utility model content
The purpose of this utility model is that provide a kind of Baby Care machine to solve the above-mentioned problems is driven with blue-ray light
Dynamic circuit.
The utility model achieves the above object through the following technical schemes:
The utility model includes first resistor to the 4th resistance, first capacitor to the 4th capacitor, first diode to the 4th
Diode, constant current chip, inductance, voltage-stabiliser tube and blue-ray light, the first end of first resistor and the first end of AC power source connect, and hand over
The second end in galvanic electricity source simultaneously with the first end of third capacitor, the first end of inductance, the first end of the second capacitor, the second diode
Anode and blue-ray light anode connection, the anode of the second end of first resistor and first diode connects, first diode
Cathode is connect with the 5th pin of the second end of third capacitor and constant current chip simultaneously, the third pin of constant current chip and the 4th electricity
The first end of appearance connects, and the 4th pin of constant current chip connects with the first end of the first end of second resistance and 3rd resistor simultaneously
Connect, the 8th pin of constant current chip simultaneously with the second end of the 4th capacitor, the second end of second resistance, the second end of inductance, the
The first end of four resistance is connected with the first end of first capacitor, the second end of the 4th resistance simultaneously with the cathode of third diode,
The anode connection of the second end of first capacitor, the second end of 3rd resistor and voltage-stabiliser tube, the cathode of voltage-stabiliser tube and the second diode
Cathode connection, third diode anode simultaneously connect with the cathode of the second end of the second capacitor and blue-ray light.
The utility model has the beneficial effects that:
The utility model is a kind of Baby Care machine blue light lamp drive circuit, compared with prior art, the utility model
It has been internally integrated the LNK304 constant current chip of switching tube, has cooperated perimeter capacitance resistance circuit, has been capable of providing constant electric current output,
The blue-ray light of driving Baby Care machine that can be stable, improves the service efficiency of Baby Care machine blue-ray light, is Baby Care machine
The linguistic term of blue-ray light lays the foundation, and has the value of popularization and application.
Detailed description of the invention
Fig. 1 is the circuit structure schematic diagram of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
The utility model includes first resistor R1 to the 4th resistance R4, first capacitor C1 to the 4th capacitor as shown in Figure 1:
C4, first diode D1 are to the 4th diode D4, constant current chip IC, inductance L, voltage-stabiliser tube DW and blue-ray light LED, first resistor R1
First end connect with the first end of AC power source AC, the second end of AC power source AC simultaneously with the first end of third capacitor C3,
The anode connection of the first end of inductance L, the first end of the second capacitor C2, the anode of the second diode D1 and blue-ray light LED, first
The anode of the second end of resistance R1 and first diode D1 connects, the cathode of first diode D1 and meanwhile with third capacitor C3 the
Two ends are connected with the 5th pin of constant current chip IC, and the third pin of constant current chip IC is connect with the first end of the 4th capacitor C4,
The 4th pin of constant current chip IC is connect with the first end of the first end of second resistance R2 and 3rd resistor R3 simultaneously, constant current chip
The 8th pin of IC simultaneously with the second end of the 4th capacitor C4, the second end of second resistance R2, the second end of inductance L, the 4th electricity
The first end of resistance R4 is connected with the first end of first capacitor C1, and the second end of the 4th resistance R4 is negative with third diode D3 simultaneously
The anode connection of pole, the second end of first capacitor C1, the second end of 3rd resistor R3 and voltage-stabiliser tube DW, the cathode of voltage-stabiliser tube DW with
The cathode of second diode D2 connects, the anode of third diode D3 while second end and blue-ray light LED with the second capacitor C2
Cathode connection.
The working principle of the utility model is as follows:
The utility model has used LNK304 the constant current chip IC, circuit topology buck- for being internally integrated switching tube
Boost structure.AC power source AC filters laggard people's constant current chip IC, constant current by first diode D1 rectification, third capacitor C3
There is an a reference source inside chip IC, the reference voltage of a 1.65V can be generated between the 4th pin and the 8th pin, this
Voltage and first resistor R1, second resistance R2 and the 4th resistance R4 have codetermined the electric current of output, specific calculation formula
It is:
I=1.65 × (R2+R1)/(R2xR4)
According to the value in Fig. 1, electric current is exported in 100mA or so.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (1)
1. a kind of Baby Care machine blue light lamp drive circuit, it is characterised in that: including first resistor to the 4th resistance, the first electricity
Tetra- capacitor of Rong Zhi, first diode to the 4th diode, constant current chip, inductance, voltage-stabiliser tube and blue-ray light, the of first resistor
The connection of the first end of one end and AC power source, the second end of AC power source simultaneously with the first end of third capacitor, inductance first
The anode connection at end, the first end of the second capacitor, the anode of the second diode and blue-ray light, the second end of first resistor and first
The anode connection of diode, the cathode of first diode connect with the 5th pin of the second end of third capacitor and constant current chip simultaneously
It connects, the third pin of constant current chip is connect with the first end of the 4th capacitor, the 4th pin of constant current chip while and second resistance
First end connected with the first end of 3rd resistor, the 8th pin of constant current chip simultaneously with the second end of the 4th capacitor, second
Second end, the second end of inductance, the first end of the 4th resistance of resistance are connected with the first end of first capacitor, and the of the 4th resistance
Two ends connect with the anode of the cathode of third diode, the second end of first capacitor, the second end of 3rd resistor and voltage-stabiliser tube simultaneously
It connects, the cathode of voltage-stabiliser tube is connect with the cathode of the second diode, the anode of third diode while the second end with the second capacitor
It is connected with the cathode of blue-ray light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820127379.6U CN209451154U (en) | 2018-01-25 | 2018-01-25 | A kind of Baby Care machine blue light lamp drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820127379.6U CN209451154U (en) | 2018-01-25 | 2018-01-25 | A kind of Baby Care machine blue light lamp drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209451154U true CN209451154U (en) | 2019-10-01 |
Family
ID=68035118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820127379.6U Expired - Fee Related CN209451154U (en) | 2018-01-25 | 2018-01-25 | A kind of Baby Care machine blue light lamp drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209451154U (en) |
-
2018
- 2018-01-25 CN CN201820127379.6U patent/CN209451154U/en not_active Expired - Fee Related
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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: 20191001 Termination date: 20210125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |