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Here is one of the projects from the book '15 Dangerously Mad Projects for the Evil Genius'. You can actually download the chapter in full, free of charge, so I will just give an overview of it here.

Full details on my blog here.
<p>Hi <br>I made this stuff but wasn't interesting. the gun lunched the projectile only about 10 meters.here are the pictures</p>
<p>Diode D2 is pointing in such a way as to temporarily function outside the limits of desirable parameters due to improvements incorporated into the acceptably performing existing dangerous conditions previous to upgrades intended to supersede adequate existing levels of performance with the intention of making improvements that will go unnoticed unless they fail to be adequate to the prevailing coulomb collection standards.</p>
Will any of these work as alternatives for the SCR ? <br>TYN612 8A 600V SCR <br>2P4M SCR <br>BT169 SCR <br>TYN612M SCR
Guessing nobody knows the answer to this question? If I could get some help I'd even be happy to get some pictures up online to help determine what I've done wrong. Thanks
Hiya folks, <br> <br>ive wired up my coilgun to the schematic above but im am very confused. the charging circuit works lovely, ive got a green led that powers off as the bank gets to full charge and I've got my voltmeter to check that its charging ok. <br> <br>However when i activate the &quot;trigger&quot; nothing happens. <br> <br>so ive either wired it wrong or I have a faulty component. i hope its just me being a numpty and that i dont have to buy another SCR/switch. <br> <br>from the switch we have the 2.7K resistor, to the SCR. Also the coil wired to the scr and the capacitor bank to the center pin. has anybody got any idea which of these is playing up im 99% sure ive put it together correctly as ive checked and double checked but I might be wrong. any help from coil gun veteran is very welcome as i have big plans for my coil gun but i need to get the guts of it working and more importantly UNDERSTANDING the components and what they do as im a novice electronics enthusiast. <br> <br>
after seeing so many instructables on coil guns, i swear i will start work on a simple one when i have chance. i notice this coil gun differs from most by using only low voltages rather than a system to boost a low voltage up to charge flash capacitors with. cool stuff!
Oh instead of using the 9V battery is it possible to connect two wires to the 36V power supply to power the SRC? If the voltage is to big then do I add a resistor?
OH KNOW I GET IT, THANKS A LOT!!!! I'm not being sarcastic
But then if the minus of the 36V supple is connected to the minus of the 9V battery, wouldn't it end up with 2 positive ends?
Yes, one at +9V and one at +36V. You need to positive ends, one for triggering and one for charging the caps.
So there will be a 36V power supply + a 9V battery to power the SRC? But wouldn't that be like 45V in total? Sorry for all the questions, I'm still learning... :/ <br>
No, still 36V because the minus of the battery connects to the minus of the power supply. You then have 9V for triggering and 36V for charging the caps.
In the schematic, a wire is connected between the batteries (the wire with the S1b), what if I have a 36V power source instead of 4 9V batteries? How do I make the connection?
The 36V goes across where all the batteries would have been, but you will still need the first battery to trigger the SCR.
What is SRC? And is there only like one type of SRC or do I need a specific type for this project? Thx :)
The SCR and all component details are at the link for the sample book chapter. Which is at www dot dangerouslymad dot com. Or buy the book ;)<br><br>To increase the voltage would require more batteries (or an invertor circuit) and higher voltage capacitors.<br><br>I would not recommend it unless you are prepared to risk destroying the SCR or damaging yourself.
Oh and if I want to increase the voltage, is there any components that I need to change?
Give us some more information here, and by all means keep the link to your blog. But I'm betting a bunch of folks on Instructables would love to read some step by step directions to make something like this. Perhaps enough to drive some traffic to your blog based on content, not just a teaser.
Hey, the book was written by &quot;Simon Monk&quot; - so is that you??
Yup,<br><br>That's me ;)

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