Copyright: 1996 - 2024
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed
formulas and reference material while performing my work as an RF system and circuit
design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while tying up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived...
All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.
My Hobby Website:
flyback transfomer - RF Cafe Forums
RF Cafe Forums closed its virtual doors in 2012 mainly due to other social media
platforms dominating public commenting venues. RF Cafe Forums began sometime around
August of 2003 and was quite well-attended for many years. By 2010, Facebook and
Twitter were overwhelmingly dominating online personal interaction, and RF Cafe
Forums activity dropped off precipitously. If the folks at
phpBB would release a version with integrated
sign-in from the major social media platforms, I would resurrect the RF Cafe Forums,
but until then it is probably not worth the effort. Regardless, there are still
lots of great posts in the archive that ware worth looking at.
Below are the old forum threads, including responses to the original posts.
|-- Amateur Radio
Gripes & Humor
-- CAE, CAD, &
Test & Measurement
Post subject: flyback transfomer Posted: Fri Apr 07, 2006
Joined: Fri Apr 07, 2006 7:24 am
hello, could anybody tell me how to figure out the primary
input pin(with approximate 1ohm coil inductance? how to find the polarity
for 2 input pins as well..)and the secondary high voltage and ground
pin for flyback transformer.. thanks
Post subject: FlybackPosted: Mon Apr 10, 2006 7:55 pm
Joined: Wed Feb 22, 2006 3:51 pm
I assume you mean flyback transformer as used in a TV or computer
monitor, not the kind of transformer used for (relatively) low-power
switching power supplies. If I'm wrong, please correct!
are several varieties of flyback transformer on the market. One kind
has a terminal common to the primary and secondary, the other does not.
Often, the output is a separate socket or lead, with high voltage
insulation - but not always.
To muddy the waters even further,
many modern flybacks are actually integrated power supplies - commonly
a voltage doubler or tripler is built in to the flyback itself.
So you need to be a bit more specific about what you need to know,
and where you're starting from!