Does anyone know where I can find a general description of how the power supply in modern TVs, VCRs, etc. works?
It operates at some tens of kHz and drives a transformer with rectifiers on the secondary side that feed the circuitry.
Both my TV and VCR use this type of supply and they sometimes don't start when the mains power is turned on.
So I assume that the feedback is sometimes not sufficiently positive to sustain oscillation.
As I don't have a storage oscilloscope, I can't see what happens when the power is turned on.
Any assistance will be appreciated.
Len
It operates at some tens of kHz and drives a transformer with rectifiers on the secondary side that feed the circuitry.
Both my TV and VCR use this type of supply and they sometimes don't start when the mains power is turned on.
So I assume that the feedback is sometimes not sufficiently positive to sustain oscillation.
As I don't have a storage oscilloscope, I can't see what happens when the power is turned on.
Any assistance will be appreciated.
Len