Electronic circuit supplier Shenzhen cn China,circuit Design supplies,professional Low cost PCB layout
Developer
Kepro
DFD-12G
1
$13.30
$13.30
Developer, 0.25 Oz/Gal 148mL, Develope 90 sec - 2 minutes.

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The fundamental circuit shown in Figure 1 generates timing for a two-phase stepper motor from an oscillator, as well as a direction (forward or reverse) signal. Figure 2 depicts the typical timing signals for a two-phase stepper motor.

A clock from a source (like a timer, PWM output, etc.) is input to a two-input XOR gate. Another input, F/_R, inverts the clock if it's at Logic 1. A flip-flop divides the pulse train output of the XOR gate by two to create CLK A. Dividing the inverted output of the XOR gate by two creates CLK B. CLK A will lead CLK B. However, when the F/_R signal goes low, CLK B will lead CLK A, reversing the motor's direction. Thus, the F/_R input can be used to control the direction of rotation. A level translator-buffer can be added after CLK A and CLK B to generate bipolar logic levels for driving the motor. The stepping rate is half the clock rate. The CLR input resets the circuit into a known state after power on. Figure 3 shows the circuit's logic timing.electronics PCBA supplies
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Multilayer PCBA,SMT process,The ROHS directive,According to the requirements of customers to design and produce...
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China
EUR8~10
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Circuit Supplies are currently constructing their web site. Printed Circuit Supplies

Page Contents:
Circuit-Fix PC Board Trace Maker
Contact Printing Exposure Frame
Copy Clear Sheets
Deluxe Positive Method Printed Circuit Kit
Direct Etch Printed Circuit Set
Direct Etch Resist Pen
Donut Pads
Drafting Film for PC Artwork
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Etching Tank
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PC DATAK Printed Circuit Board Design Software
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Photo Etch Instruction Manual
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Positive Art Kit
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Positive Photo Resist Pre-Sensitized Printed Circuit Boards
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Replacement Heater
TINNIT Electroless Bright Tin Plate
PCB Manual
Photochemicals

PC Datak(tm) Printed Circuit Board Design Software

Produce High Quality, Professional Grade,
Printed Circuit Boards on any IBM/PC Compatible.

What is PCDATAK(TM)? The PCDATAK(TM) program is a CAD system for designing and producing printed circuit boards. It allows the user to make his schematic circuit into a printed circuit layout file and to use that file to print PC board artwork that is used to produce a finished PC board, solder masks and component side I.D. silk screens.

Who uses PCDATAK(TM)? The software has been designed for use by nearly anyone wanting to make a PC board, either in quantity or in prototype lots, at a software cost low enough for nearly anyone's pocket. Additionally, PCDATAK(TM) software may be used to create a circuit that can be produced from your disk file by a professional PC board manufacturing company: International Design Modeling of Bedford, NH (particulars are in the manual introduction). This may be of special interest to users requiring either large quantities or prototyping very complex boards.

What can PCDATAK(TM) do? The software can produce either a single sided or double sided PC board up to 30" x 30" in size. Industry accepted component pad and trace sizes are preset or the user may also customize the software for any desired components. Component identification silk screen art and solder mask art are also produced.

How do I print the circuit? PCDATAK(TM) circuits may be printed (or copied on a copy machine) directly onto a clear carrier sheet, such as those made for overhead projectors, and then used as a 1:1 "positive" in making a PC board. A Postscript(TM) compatible laser printer may be used: ordinary dot matrix and ink jet printers will not work. If you do not have a Postscript(TM) printer, call your local copy center where you can very likely take your circuit on a disk and print it for a moderate fee.
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Sell PCB and PCBA--- Contract manufacturer
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from Topscom Electronics Co.,Ltd & Topscom Precision Industry Co.,Ltd.

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Dear sir or madam, Our company is specialized in doublesided and multi-layer PCB,PCBA,OEM and so on. Our mission is to ...

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from Shenzhen Hengtianweiyan Technology Co.LTD

[Related Keywords: PCB, PCBA, OEM]
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PCB Manufacturing & assembling
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from Vin Electronics

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LOWER PRICE with low cost-high quality manufacturing

Low Price for Small Orders:

The following chart are price samples for small orders of
a 100mm x160mm board. The price unit is EUR, Lead time is
2~6 weeks. Standard Lead time is 2 weeks.
However for fast PCB, the lead time can be 3 days to 6 weeks
depending on customers' needs.
Please note: Discount for Re-Orde . All price including VAT
All price are FOB anywhere for Europe
electronic makers

PCB Quote Size: 100mm x160mm board(1 Eurocard).
The price unit is Euromoney(?) per 1 Eurocard.
For 5-50PCS PCB Order.

2 weeks
2 Layers
4 Layers
6 Layers
8 Layers

10 pcs/ea
5.64
13.39
20.16
26.79

10 Re-Order
5.08
12.06
18.14
24.11

25 pcs/ea
3.44
8.00
13.39
17.80

25 Re-Order
3.10
7.20
12.06
16.02

50 pcs/ea
1.93
5.41
8.13
10.81

50 Re- Order
1.74
4.87
7.32
9.74

Plus set up and Test charge 47? for 2-layer board
Plus set up and Test charge 104? for 4-layer board
Plus set up and Test charge 149? for 6-layer board
Plus set up and Test charge 199? for 8-layer board

Double sided board quote size: 76mm x100mm board.
The price unit is Euromoney(?) per 1 eurocard.
For 50-500PCS PCB Order

Unit
2 Weeks

50 pcs/ea
1.90

50pcs Re-Order
1.71

100 pcs/ea
1.81

100pcs Re-Order
1.63

500 pcs/ea
1.05

500pcs Re-Order
0.96

Plus set up and Test charge 47? for 2-layer board

4-layer board Quote Size: 76mm x100mm board.
The price unit is Euromoney(?) per 1 eurocard.
For 50-500PCS PCB Order

Unit
2 Weeks

50 pcs/ea
4.02

50pcs Re-Order
3.39

100 pcs/ea
Features: 1. Our professional engineering team can put your project into production in a short time. ...
[Keywords: PCBA, PCB, FPC ]
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Parameters of PCB manufacturing: Min. drill hole: 0.25mm; Line width (Min.): 0.1mm; Line space (Min.): ...
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Good Quality and Low Price PCB??PCBA??FPC
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[Keywords: PCB, FPC, PCBA ]
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[Keywords: pcba, smt, mcu ]
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PCBA Equipment Model Manufacturer Qty Capability Chip Shooter XP143 Fuji 4 2800pcs/set/hour(chip);Package: ...
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ET LIMITED is make PCB and PCB assembly in house,also we sourcing components for customer for all kind ...
[Keywords: PCB, PCBA, PCB Assembly ]
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Etching Supplies
Either click on the product you are interested in to go directly to it or use the forward and back buttons to browse through this entire section.

Supplies
Chemicals
Negative Photo Resist - ER-71
Negative Resist Developer
Positive Type Developer Concentrate
MG Chemicals Positive Photo Resist Developer
Datak Dry Concentrated Etchant
MG Chemicals Liquid Ferric Chloride - Etching solution
MG Chemical Ammonium PerSulphate - Copper etchant solution

Direct Etch
Drafting Film For PC Artwork
Datak Direct Etch Resist Pen
Professional PC Etching Tank
MG Chemicals Economy Etching Tank
Etching Solution Heater
PC Boards
Pre-Sensitized Positive - Photo Resist Printed Circuit Boards
Copper Clad Circuit Board -- BEST SELLER!
PC Board Repair
MG Chemicals Silver Conductive Pen - Excellent for repairing and modifying printed circuits and EMI/RFI shielding applications
MG Chemicals Green Conformal Overcoat Pen - Protects printed circuit boards against moisture, corrosion and thermal shock.
$TOTAL
DESCRIPT.

Etchant
Kepro
SP20G
1
$121.50
$121.50
Sodium Persulphate with catalyst,8 lbs /3.5 Gal = 2400 mL /3785mL, Etching 10 minutes - done.

Orcad
PCB386+
1
$450.00
$450.00
Educational price on PCB Layout 1996.

PLD Tool
Orcad