Depends on what you need. If its for PFC etc.. then taking from mains would be the best solution as it would be phase matched. If your just looking for a stand alone oscillator try A Bubba Oscilator https://www.hscott.net/bubba.pdf using OpAmps could give you 50Hz.Thanks, thats a good idea..we do have mains on this product...i could even divide it down then do the bottom res as a digipot...thanks!
Any other ways also appreciated.....
Every full wave sine code contains two half sine....so I guess there are millions.their must be some half sine code out there on the web
I doubt that overcurrent increases distortion.A high quality transformer does not distort the waveform since the current remains under the nominal value
Even small transformer gives quite nice sinusoidal waveform, if supply voltage is not too high. Of course the waveform it's not like in signal generator. I have used 6VA 230/9 VAC transformer in mains voltage monitor hobby project. Transformer started to saturate above ~250 VAC.Hi,
I doubt that overcurrent increases distortion.
I rather think overvoltage leads to saturation and thus leads to distortion. Is there any other "source of distortion" than the magnetic field?
Overcurrent rather leads to less magnetic field in the core.
Klaus
Hi,
I doubt that overcurrent increases distortion.
I rather think overvoltage leads to saturation and thus leads to distortion. Is there any other "source of distortion" than the magnetic field?
Overcurrent rather leads to less magnetic field in the core.
Klaus
I made rectified half wave PWM with 8-bit Arduino Duemilanove which has ATMEGA328 microcontroller like Arduino UNO. Samples of positive half wave are repeated. Example of samples which are repeated in order to get rectified sine waveI'm thinking of an 8-pin PIC producing a sine or half sine using PWM (as many as 1024 levels so very pure) and also producing a pulse out at the start of each cycle that can be used as a zero crossing indicator. Easily switchable between 50Hz and 60Hz, very stable and accurate frequency. Cost about 2 UKP.
Brian.
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