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( he needs more then 230 volts AC in to get 230 (volts DC out (BUT subject to the rectifier (configuration, of course) Yep..kinda.. and it will depend on the specific diodes he uses to determine the precise difference.. they have different forward voltage drop characteristics, depending on the junction type. (Your grasp isnt perfect but its not too darn (bad for sure since you remembered the (term "Wheatstone" better then myself. Grrrrr r (told ya its been a while It's only been 18 years since I starterd taking some of those EE classes.. so it may be just a tad fresher in my mind. (and I still claim and stand by that he still (needs more then 230 AC in to get 230 DC out He's going to be close, no matter what rectifiers he uses..The reason being, is that the 230v we refer to is just 70% of the half wave potential of the ac wave form. That is.. If you looked at the full wave form, peak to peak on an o-scope.. you would have a signal that might be say.. 650v peak to peak. Drop that down to 325v for a peak reading. It is still common among the electrical wireing people to carry 'peak reading' volt meters, instead of the RMS reading volt meters that are commonly sold to 98% of the population. In any case.. that 325v is the peak voltage.. that is.. it is the maximum potential difference from ground reference to the top of the wave form. Now.. to compair the amount of 'work' completed between AC and steady state DC voltage, there is another measurement point.. and that is the root mean square.. or RMS voltage. That 325 volts becomes 230v when you calibrate for RMS.. that is about roughly 70% of the peak voltage reading That's why it is not going to be too hard to get a high DC rectified voltage out of 230vAC rms.. cause he has a 650v Peak to Peak signal to work with... All that said.. there will be some forward votlage drops at the rectifiers, as well as some ripple on that unfiltered DC. You would want to filter it with a big cap, and perhaps stabilize it with an inductor ( the electro magnet will be a huge inductor ) if you wanted to pin down an exact dc voltage reading. (while the DC is peak to peak) The ac full wave form from peak to trough to negative peak will be peak to peak.. the DC will be steady state, either positive or negative, referencing ground... but I think that was a typo anyway.. I thik we both agree on that and the other points.. said differently or not.. (What is the correct generic or technical term (for the bridge configuration Im thinking of) If you are refering to the 4 diodes in a diamond pattern, then it is a 'full wave bridge'.. Common lingo would be to call it a 'bridge rectifier', if you were refering to a single device that was say..pre-assembled and potted in epoxy on a heat sink , and ready to use.. like at radio shack.. etc.. vs assembline our own out of 4 individual diodes. Soundguy
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