How to handmake a fade in/out on-off in your bedroom

When the light open and close at night, it is always bringing uncomfortable felling due to the light suddenly turned bright or dark. So we will introduce an easy and economic way for you to make a fade in and out on-off in your bedroom, it can effectively eliminate uncomfortable felling from the light suddenly changes, makes your bedroom fashionable colorful and full of warmth.

What is the theory?

The circuit of the light switch is shown in below figure. The light switch controller is consists of transistor VT1, VT2 and resistor-capacitor unit. Because VT1 and VT2 must be work in DC condition, so we can use another four crystal diode VD1-VD4 to constitute a bridge rectifier, in order to transform 200V AC to pulse full- wave DC power supplies. SA is the light hand switch, H is an hypothetical bulb for convenience explain.

Preparation of components

There are a total of 12 components in this Making (including blub and switch), BOM list in below table.

BOM List

Label	Name	Type and specification	Quantity
VT1	Triode transistor	3DA87E, amplification factor β＞50	1
VT2	Triode transistor	BU406, amplification factor β＞120	1
VD1~VD4	Crystal diode	1N4004	4
R1,R2	Carbon-film Resistor	RTX-1/4W, 680kΩ	2
R3	Metal film resistor	RJ-1W, 75kΩ	1
C	Electrolytic condenser	CD11M-160V, 47μF	1
H	Bulb	KW≤100W	1
SA	On-off control	General-use hand switch control	1

Handmade and use

We can use a knife to cut away useless copper on the FR-4 material board, finish board is shown at the following picture.

Don't know how to cut away?

Step 1, Cut off a board Size 40mm*30mm, Metal ruler and knife/ hacksaw is ok

Step 2, Draw the circuit in the board, Paint pen is ok

Step 3, Cut away the useless copper carefully

Step 4, Drill holes, Mini electric drill or bench drill is ok

Step 5, Soldering

Step 6, Install the PCB into your mounting box and connecting line according to the following picture.

That's it!

Any question, please feel free to contact us.

WWW.JESEN.COM.CN/EN/PCB.ASP

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Printed circuit board(PCB) Production Process in Jesen Industrial

Jesen's Printed circuit board(PCB) Production Process 

RFQs

Your RFQs are highly respected will be responded within 1 hours! As a quick turn PCB's manufacturer, we understand how important time is to you.Therefore, we are obligated to respond to your RFQ in no time instead of wasting your precious time by all means.

Engineering Queries

All of your design data in the Gerber file, IPC net list, fab drawings and other pertinent manufacturing documents will be thoroughly reviewed by our engineers. If there are any design discrepancies, we will notify you with easily understandable explanations and/or illustrations to clarify any issues you might have.

Technical Service

No matter what technical questions you have, our Jesen technical team will work with you tirelessly and provide you the best solutions to your questions.

Efficiency

We always Keep a variety of materials in stock (ShengYi, Kingboard, Isola, Rogers, Taconic, etc), to provide amazing service while expending as few times as possible.

Welcome to contact us with any question!

Sales Dept: Machel Feng, Machel@jesen.com.cn
Maketing Dept: Joe Ma, Joe@jesen.com.cn
PCB Engineer Dept: David Luo, David@jesen.com.cn

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The standard of Ink Materials in PCB Solder Mask

Jesen's Standard of Solder Mask Materials

Shenzhen Jesen Industrial Co.,Ltd. is an ISO 9001:2000, UL and CE certified manufacturer of printed circuit boards(PCB, FPC, MCCP).

1.Printed circuit board

Special plug hole ink:Taiyo PSR-4000 PF9

Colour	No	Customer	Brand of Ink	Types of Ink
Photoimageable ink	1	HDI heavy gold plate, general heavy gold plate	TAMURA, TAIYO	DSR-330 S50-99G、 PSR-2000 SP630 HF
	2	Huawei systems, mobile and communication board	TAMURA, TAIYO	PSR-2000 SP630 HF、DSR-330 S50-99G
	3	Picotronics,BYD customer OSP PCB	AMC	PSR-550B  G927、PSR-550B  G92T
	4	Samsung、general OSP PCB	Chungyu	LSM-3000N G93
	5	General Hasl PCB	AMC	PSR-550B  G927、PSR-550B  G92T
	6	When customer is not specified, use Chungyu Ink in the first place.
Mixed Ink	1	Pegatron motherboard	Rongda yellow Ink		H-8100  8Y
	2	Gaodeng Bu'er and other motherboard	AMC blue Ink		PSR-550B  B25
	3	HDI blue Ink	Kuangshun Blue Ink		KSM-S6188 BL
	4	Photoimageable Black ink	Rongda black Ink		H-8100  8BK
	5	Photoimageable White ink	Kuangshun White Ink		KSM-S6188 W
	6	Photoimageable matt black ink	Kuangshun matt black Ink		KSM-S6188 BKM
	7	Customer specified materials

2.Flexible Printed Boards

 For more details, Please fell free to contact us.

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How is Shenzhen Jesen Industrial Co.,Ltd. pay attention to environmental protection

Environment

For Jesen Co.,Ltd. environmental responsibility means far more than being “green” or selling green products. We view it as connected to every aspect of our business, from the manufacture of our circuits to how they are packaged and shipped to our customers.

As a manufacturer, we have the potential to make a difference on critical environmental issues, such as saving energy and combating climate change. Being environmentally responsible also supports our success as a company. We believe that it allows us to innovate, create value for our business, and meet the expectations of our customers, employees and society.

Fact:

More greenhouse gases (GHG) lead to climate change, with melting ice caps and glaciers causing rising sea levels and altering precipitation.

Impact:

To help mitigate climate change, Jesen Co.,Ltd is reducing its GHG emissions and environmental footprint, through energy efficiency, conservation measures and waste reduction.Shenzhen Jesen Industrial Co.,Ltd. Is a printed circuit board, PCB,Rigid-Flex-pcb, Heavy Copper,  HDI board,  PCB Manufacturer, FR4, High  TG,PWB,FPC,PCBAassembly company.

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