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Hi all, I am thinking is there a way to protect the power supply when,
AC240V is accidentally wired to the 24V DC output?
The power supply has to function normally when the fault is removed.
Pls share with me any ideas you have. Thank you!
waveform voltage on flyback
Thanks eem2am for yr advices & recommendations.
You gave me the direction to tackle this problem. Despite the oscillation is normal but I found the osc noise is coupled to the secondary outputs. It is annoying.
I will do some study soon to try minimize it. Now I...
flyback waveform
Hi, I found a problem while monitoring a flyback design.
There is too much oscillation at the drive winding when the PWM turn on. The drive winding waveform should be similar to the VDS. Considering parasitc components, I didn't expect the oscillation to be so severe...
non earthed tv power cords
Hi PRAVARDHAN,
I'm not exactly sure but I think most power supply portion of TVs (smaller inches) are using flyback topology which consist of a converter transformer to step down to the required dc voltages for Backlight inverters, Audio supply, Video ICs.
For the...
leakage current tv antenna
Thanks everyone for the explanation. But it links to another related question.
Power supplies for TV is using smps which is the same as ATX power supplies for PC. TV uses 2 pin but all PC power supplies are using 3pin in which the metal casing is connected to earth...
2 pin power not grounded
Hi, this question has been on my mind for a long time.
Why most TV/VCR uses 2 pin (Live & Neural) and not 3 pin plug?
I understand the cabinent of TV is mostly plastic and those exposed parts (A/V connections, screws) are connected to the secondary (cold) gnd. There...
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