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puffer [2015/12/18 19:21] zashi |
puffer [2015/12/18 19:39] zashi [Problems and Constraints] |
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| * **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 | * **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. | * **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. | ||
