I THINK ∴ I'M DANGEROUS

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Next revision
Previous revision
Last revision Both sides next revision
puffer [2015/12/13 00:13]
zashi created
puffer [2015/12/18 19:39]
zashi [Problems and Constraints]
Line 25: Line 25:
  
 The firing capacitor(s) have been scavenged from old external flashes. The firing capacitor(s) have been scavenged from old external flashes.
 +
 +
 +===== Problems and Constraints =====
 +
 +  * **Constraint** I'd like to run off a single D-Cell battery. Per my math, even if I go for a 2400 MFD capacitor bank (at 330V), a single D-Cell has enough Watt-Hours to charge over 300 times. The ease of changing out and cool-factor of replicating the single-cell power source of energy weapons from Fallout is very appealing.
 +  * **Challenge** How do I get a more workable voltage out of a 1.2V cell? I need about 3 volts to drive the ARM microcontroller. If I want to use one 10:1 transformer,​ I need at least 40 volts. The MCU isn't entirely necessary--a 555 to generate the AC signal and an op-amp, voltage divider, and transistor can be used to stop charging and indicate when the gun is ready to fire. I could use a ready-made booster-converter circuit board, but those have limited amperage output. I could drive directly from the battery, but to reach the target 461V, that's a 384:1 winding ratio. I'd either have to make a transformer or buy one. Neither are really doable. I could link two of my 10:1 transformers together for a step up of 100:1
 +  * **Pragmatic Solution** Just use more batteries for greater voltage. Bleh. Shitty.
 +  * **Ideal Solution** Have a 300W, 384:1 transformer being fed directly from the bank of high-Amp MOSFETs. ​
 +