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Simply dividing the voltage down isn t quite enough protection for the Arduino input, though Imagine what would happen in the case of a load-dump when the alternator pumps 60V into the system the voltage divider output would rise to 192V! The 56V Zener diode across the 47K resistor provides that extra protection A Zener diode has the unusual property that when exposed to a reverse-biased voltage below a specific Zener voltage it acts as an open circuit and you would hardly know it s there, but if the voltage rises above that point the Zener diode begins to conduct almost like a short-circuit The result is that it can act as an over-voltage protection clamp that prevents the Arduino input from seeing a voltage beyond its rated level.

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//cleanup ::CoUninitialize(); return 0; } The results from the C++ client test look like this: ReturnBSTR: onetwo InOutBSTR: onetwo OutBSTR: onetwo InOutBuilder: onetwo ReturnLPWSTR: onetwo ReturnLPSTR: onetwo PassAndReturnLPWSTR: onetwo The C++ test is able to call the final three COM methods that use character arrays instead of a BSTR Notice that for each of these methods (ReturnLPWSTR, ReturnLPSTR, and PassAndReturnLPWSTR), we make sure that we call CoTaskMemFree to free the memory that was allocated The call to the managed code allocated the memory for the return values, but we are responsible for freeing it We use CoTaskMemFree for this purpose since we know that this memory was allocated by COM As mentioned previously, a StringBuilder is always passed as an [in,out]LPWSTR When we think about what a StringBuilder really is, this makes sense Under the covers it is really a raw Unicode character buffer.

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c# add watermark to existing pdf file using itextsharp

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Combined with the high-impedance input presented by the voltage divider, it provides pretty much bulletproof protection against anything a car electrical system can throw at it Note that although Zener diodes have a specific rated voltage, their conductivity isn t quite as binary as being totally off below that voltage and totally on above it They begin to conduct gradually a little below the rated voltage, which is why we chose a 56V Zener to protect a 5V input If we d chosen something like a 51V Zener instead, it would actually start clamping the input prematurely once it rose above about 47V or 48V The 56V part we selected is just right for protecting a 5V input.

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1. Run the Visual SourceSafe 6.0 Admin program. Select Options from the Tools menu. On the General tab, enter the name of a file that Visual SourceSafe should use as a journal file. Click OK to save your change, and close the Admin program. 2. Install Visual SourceSafe to the FogBugz server machine. You must make sure that the FogBugz user or whoever you installed FogBugz to run as has read access on all your VSS folders and all subfolders. The user must also have full control on the names.dat and the rights.dat files, and the LoggedIn directory. Also, the user must have full control on the files SSUS.DLL and SSAPI.DLL in order to create the SourceSafe COM object. 3. Edit the vss_fbupdate.wsf file in the FogBugz\Accessories\SourceControl\VSS folder: Edit the FB_PATH variable so that the script will pick up the needed info from the registry. (Note that you will have to add VSSUser and VSSPassword keys to the registry at HKEY_LOCAL_MACHINE\SOFTWARE\Fog Creek Software\FogBugz\[%FB_PATH%].) Alternatively, you can override what is in the registry and manually set the sDBConnection to the connection string for FogBugz, and the FB_VSS_USER and FB_VSS_PASSWORD variables. For each VSS project you have, add a line to the script beneath the commentedout line 'Call ProcessVSSJournal("Project Name", "Path to VSS Database directory") For example (enter this as a single line in the file): Call ProcessVSSJournal("Test", " C:\program files\microsoft visual studio\common\vss")

We use a StringBuilder when we need to do a lot of string manipulation that would be costly using normal immutable strings When a StringBuilder is marshaled between managed code and COM, the memory for the raw buffer is pinned and passed directly between the two environments That is why it is always marshaled as an LPWSTR, because the underlying buffer is being exposed to COM When we passed SystemString parameters, we didn t worry about explicit allocation of the string When using a StringBuilder, we do need to make sure the underlying Unicode buffer is correctly allocated when the StringBuilder is created This allocation is always done by the caller Then when the parameter is marshaled to the called method, the size of the buffer cannot be changed The called method must use the buffer it was given without changing the size.

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How to add watermark to pdf document ( c# sample) - Apitron
Watermark is usually a semitransparent drawing added on top of the page content which can be created using various ways. This type of marking your ...

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How to add watermark to PDF file in C# , VB.NET | WinForms - PDF
3 Aug 2018 ... C# example to add watermark to PDF file using Syncfusion .NET PDF library. Text and image watermark also supported.

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c# add watermark to existing pdf file using itextsharp

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c# add watermark to existing pdf file using itextsharp

add watermark image to pdf using itextsharp c#

c# add watermark to existing pdf file using itextsharp

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