I'm having trouble with a flyback converter I got. My output voltages are not what they are supposed to be. Flyback schematics is below:
If you cannot see very clearly, primary number of turns is 200 and 15 and 5 on 15V and 5V secondaries respectively. Problem with my output voltages is that they are not what they're supposed to be. 15V is too hight and 5V is too low.
My voltage waveforms are:
CH1: Command signal
CH2: VDD (supply to chip)
CH3: 15V output
CH4: Primary voltage
And also with 5V output on CH4:
Anyone has any idea what is happening and what might be the problem?