What kind of components are these?
They do not have any marking, one is bigger than the other. Both have 4 pins, and 4 coils.
They come from an old Philips CRT.
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asked Aug 27 '17 at 13:48
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1\$\begingroup\$ These are common-mode chockes. They're 2 inductors which are magnetically coupled. Yes, that makes them a transformer as well ! You could use them as a transformer as well. But they're only 1:1 transformers so that limits the applications. These are used to block high-frequency signals from getting to the mains connection for example. You see them mainly in switcher mode mains power supplies. \$\endgroup\$ – Bimpelrekkie Aug 27 '17 at 13:53
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2\$\begingroup\$ @Bimpelrekkie -- make that an answer and I'll upvote it :) \$\endgroup\$ – ThreePhaseEel Aug 27 '17 at 13:55
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\$\begingroup\$ @Bimpelrekkie ... thanks again (if you want get points, put it in an answer) :-) \$\endgroup\$ – Michel Keijzers Aug 27 '17 at 13:55
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These are common-mode chokes. They're 2 inductors which are magnetically coupled.
Yes, that makes them a transformer as well ! And you could use them as a transformer. But they're only 1:1 transformers so that limits the applications.
These are used to block high-frequency (common mode) signals from getting to the mains connection for example. You see them mainly in switcher mode mains power supplies
answered Aug 27 '17 at 13:59
