Electronic transformer ?
Electronic transformer ?
(OP)
I have seen that you can get electronic transformers for halogen lighting these days.
However, nobody wants to say much about what comes out of those.
It seems the device is switching internally at 20 kHz or so,
but do you connect the bulb directly to the secondary output of
the switch transfornmer ?
I would not use that in a sensitive environment. The EMC fields must be huge !
Or is the output somewhat rectified / filtered like a SMPS ?
However, nobody wants to say much about what comes out of those.
It seems the device is switching internally at 20 kHz or so,
but do you connect the bulb directly to the secondary output of
the switch transfornmer ?
I would not use that in a sensitive environment. The EMC fields must be huge !
Or is the output somewhat rectified / filtered like a SMPS ?






RE: Electronic transformer ?
RE: Electronic transformer ?
RE: Electronic transformer ?
http://www.pegasusassociates.com/products/Transformers/trans.html
etc. for more info
RE: Electronic transformer ?
Essentially, the electronic ballasts used for lighting fixtures now ARE a type of SMPS. EMI and harmonics are big issues with these devices and not all manufacturers take this seriously, especially those selling on price. As sfardella mentioned above, a CE mark is a good first step in selecting a ballast because CE requirements are very stringent in this regard and manufacturers nust add filtering in order to comply. US manufacturers who are not exporting however do not need to meet CE requirements, only FCC regulations which are concerned about RFI, a different issue.
Quando Omni Flunkus Moritati
RE: Electronic transformer ?