Dual LED Flasher

 
 

          The circuit above is actually a multivibrator, i.e. a free-running miltivibrator. It's identical to a flip-flop that triggers itself repeatedly. Q1 and Q2 are general purpose PNP transistors (2N3906, 2N2907, etc). R1 and R2 limit the current to the LEDs (which flash alternately). Increasing the values of C1 and C2 will slow the flash rate.


   

HJSplit (Software for Splitting and Joining File)

    

HJ-Split is a software that can be used to split and join a file with very easy steps.

How to split files:
1. run HJ-Split and select Split
2. select the file you want to split (input file)
3. specify the location of the split (output file)
4. You can specify the partition size of the file you want on the split file size option (in KB or MB)
5. click start
6. DONE!

How to join files (only for files that are splitted using HJ-Split):
1. run HJ-Split and select Join
2. select the file you want to join (input file), ie files with extension .001
3. specify the location of the join
4. click start
5. DONE!

Download HJ-Split

Have fun.. ;-)

[update] ISIS Proteus Simulator 7.6 SP4

    
    

Here's I give you the newer version of ISIS Proteus Simulator, a powerful tool for learning about electronics circuit (the previous version of Proteus Simulator that I share on this blog is version 7.1). Here's the screenshot:

 

It looks much better and it has an attractive UI, and of course supported also by libraries that are richer than ever. You can see it in the component mode and then pick the device, seen many new components that do not exist in version 7.1. Hope You like it. Have fun :-)


For direct and easily download, this file is partitioned into several sections. You can merge the files of this partition using HJSplit software.

Download Proteus Simulator 7.6 SP4 (total file size is 68 MB)
part1
part2
part3
part4

Note: for Windows Vista and Windows 7 you must run it as an administrator by right click on the file and select "run as an administrator".

if You have never known what it was Proteus Simulator, here's the introduction ;-)


What is Proteus Simulator?