3 ms·
If you buy a $2 phone charger, this circuit (the ringing choke converter) is what you get. It's kind of amazing how cheaply these are made. It can look just lik
by kens 9y ago
If you buy a $2 phone charger, this circuit (the ringing choke converter) is what you get. It's kind of amazing how cheaply these are made. It can look just like an Apple charger on the outside, but the power quality (and safety) is much, much worse.
- SAI_Peregrinus 9y agoYep, they're used in lots of cheap power supplies, not just phone chargers. The poor power quality and safety aren't inherent problems of the ringing choke design, those are just issues with cheap chargers. They tend to omit the output filtering and do horrible things to creepage and clearance distances.