| Electronics > Beginners |
| Questions regarding diodes in parallel |
| << < (3/3) |
| GadgetBoy:
--- Quote from: Hero999 on June 08, 2018, 08:01:46 am --- You'll need a heck of a load more turns than 30 and if you use a connect a capacitor in series, the capacitor will drop most of the voltage, leaving only a little for the transformer. Any old core is not good enough. It needs to be suitable for mains frequencies and not be too conductive, otherwise there will be huge Eddy losses. Another thing you need to be wary of is, connecting a capacitor in series with an inductor, such as a transformer's primary coil, will actually cause a higher current to flow, than what you'd get from having either the capacitor or inductor alone. The capacitive reactance cancels out the inductive reactance and if they're both the same, you're left with nothing but the effective series resistance of both parts and a very high voltage across both the capacitor and inductor, but opposite in phase. The end result will be damage to the components and hopefully a tripped circuit breaker, otherwise there'll be fire. Look up LRC circuits. Why not simply buy one? Here in Europe, it's possible to get 400V to 110V transformers, which are used to provide 110V for control systems, from a 400V three phase system. All European supplies such as RS Components and Farnell sell them. All you need to do is connect it in reverse: 110V mains to secondary and you'll get 400V. 55-0-55V secondary, 400V primary. https://uk.rs-online.com/web/p/toroidal-transformers/3103332/ 55-0-55V secondary, primary, 208V, to 600V, with plenty of taps, at different voltages. http://uk.farnell.com/block/uste250-2x115/transformer-2-x-115v-250va/dp/1177120 --- End quote --- Ugh, again, now that you've explained to me I realize I should have realized that in the first place. So much for making a compact, low-current mains transformer. |
| Navigation |
| Message Index |
| Previous page |