Re: rectifier waveform

"John Fields" <jfields@xxxxxxxxxxxxxxxxxxxxx> schrieb im Newsbeitrag
news:b77k721i2vbl1n6mvcmk6hm22mrvaih2p2@xxxxxxxxxx
On Sun, 28 May 2006 11:16:26 -0700, John Larkin
<jjlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:



Following a discussion that John Fields and I have going in a.b.s.e...

Consider a conventional power transformer running off the AC line.
Assume a 12 volt RMS untapped secondary that drives a bridge
rectifier, filter cap, and a modest grounded load, producing roughly
+15 out.

What is the waveform at either end of the transformer secondary?

---
Check "Rectifer Waveforms" on abse.


--
John Fields
Professional Circuit Designer

Hello John,

I have tried to get similar waveforms in my simualation. After I increased
the
stray inductance to 500uH, it looks very similar. The remaining difference
are
bursts with about 100kHz repetiton rate when the diodes switch off in
every cycle. Maybe your scope doesn't show that because of the choosen
sampling rate.
It would require a sampling rate of 1MHz or faster. The spikes depend on the
diodes too.

Best regards,
Helmut




.

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