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Which Capacitors are Best for Power Supply Decoupling

Sorry one more decoupling cap question. When I am selecting a cap and there exist ceramic, tantalum, and electrolytic caps all with the value I need. Which capacitor type is the better choice for...

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Controlling Stepper with PIC12F629

I am trying to create something like this http://tangible.media.mit.edu/project/inform/ using stepper motor. I have attached hardware structure. Problem that i am facing is am good at arduino but dont...

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Please help...

Can any one please help he how to compile a C program on the ARM processor ?? Thank you very much in advance, Regards,Timothy

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So, is the idea of retrofit LED bulbs bogus, or is it realy the way to go?

I've heard a number of people say that retrofiting existing lighting fixtures with LED bulbs is not going to be satisfactory. Yet I see a lot on companies beginning to offer LED bulbs with bases that...

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Which Capacitors are Best for Power Supply Decoupling

Sorry one more decoupling cap question. When I am selecting a cap and there exist ceramic, tantalum, and electrolytic caps all with the value I need. Which capacitor type is the better choice for...

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Rush PCB

        I have a custom layer stack for my circuit board, so far cannot find any Rush  PCB manufacturer who can make my board, anyone can suggest an advanced PCB manufacturing?

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Audio Transformers -- Need a technical Insight.

Hi Folks,I'm a Digital Design Engineer and would like to get some information from some of you guys. As i said i'm into Digital Domain so I know really less about analog and very less about audio...

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PCB manufacturer and Electronics Calculator

Hi,I'm a Electronic hobbist, doing PCB related job. Usually i'm using PCB from local product. Worried about their product quality, usually i'm working on 4 layar PCB. Now i'm looking World best PCB...

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So, is the idea of retrofit LED bulbs bogus, or is it realy the way to go?

I've heard a number of people say that retrofiting existing lighting fixtures with LED bulbs is not going to be satisfactory. Yet I see a lot on companies beginning to offer LED bulbs with bases that...

View Article


LED - Resistor Circuit Design Question

I have several types/colors of LEDs, both 3mm and 5mm, that specify a range for Forward Voltage (such as 3.2-3.5V) and/or a range for Current (such as 20-25 mA).  I'm using some of the free online LED...

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Remote controlled robot snow plow - DIY + Video

DigiKey uses CUI's VHK200W DC-DC converter to create a remote controlled robot snow plow, the snowbot. Snowbot uses motors pulled off an old electric wheelchair and deep-cycle marine batteries. 

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How to balance parallel MOSFET's

I want to place several mosfets in parallel to handle more current, but am confused about the Gate resistors and something refered to as a "balance" resistor.  From what I've read, this balance...

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arduino based autopilot

Hello this is my first post in about 15 years to digi-key.I am gathering parts, information and knowledge to build an autopilot for my 18 foot boat.Basically, to begin with it will steer my 7.5 Hp....

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So, is the idea of retrofit LED bulbs bogus, or is it realy the way to go?

I've heard a number of people say that retrofiting existing lighting fixtures with LED bulbs is not going to be satisfactory. Yet I see a lot on companies beginning to offer LED bulbs with bases that...

View Article

Remote controlled robot snow plow - DIY + Video

DigiKey uses CUI's VHK200W DC-DC converter to create a remote controlled robot snow plow, the snowbot. Snowbot uses motors pulled off an old electric wheelchair and deep-cycle marine batteries. 

View Article


So, is the idea of retrofit LED bulbs bogus, or is it realy the way to go?

I've heard a number of people say that retrofiting existing lighting fixtures with LED bulbs is not going to be satisfactory. Yet I see a lot on companies beginning to offer LED bulbs with bases that...

View Article

How to balance parallel MOSFET's

I want to place several mosfets in parallel to handle more current, but am confused about the Gate resistors and something refered to as a "balance" resistor.  From what I've read, this balance...

View Article


LED - Resistor Circuit Design Question

I have several types/colors of LEDs, both 3mm and 5mm, that specify a range for Forward Voltage (such as 3.2-3.5V) and/or a range for Current (such as 20-25 mA).  I'm using some of the free online LED...

View Article

PCB manufacturer and Electronics Calculator

Hi,I'm a Electronic hobbist, doing PCB related job. Usually i'm using PCB from local product. Worried about their product quality, usually i'm working on 4 layar PCB. Now i'm looking World best PCB...

View Article

cascading two CD4067's

Hello all, I'm trying to build a simple LED oscilloscope using CD4017 binary counter to run two CD4067 demux making 16 x 2 = 32 outputs (columns), but am having difficulty finding how to cascade the...

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