Install the FETs and post a photo of the signal you have on one of the gate pads (confirm that they are still identical after installing the FETs).
This is the photo without fets
This is the photo with four fets intalled, on each gates the signal is the same
An externally hosted image should be here but it was not working when we last tested it.
This is the photo with four fets intalled, on each gates the signal is the same
An externally hosted image should be here but it was not working when we last tested it.
Did it blow the 10 amp fuse?
What does the waveform look like on the gate and drain of the power supply FETs?
What does the waveform look like on the gate and drain of the power supply FETs?
no 10 amp fuse is ok !
but on the schematics they put resistor and condensator in serial ?? and i don't put them....and they are on primary of the transformer.
but on the schematics they put resistor and condensator in serial ?? and i don't put them....and they are on primary of the transformer.
They used a CLC filter in the Blaupunkt but it's not necessary.
What does the waveform look like on the gate and drain of the power supply FETs?
What does the waveform look like on the gate and drain of the power supply FETs?
i use le lcl filter and the noise disappear 😕
the waveform on gate is
the waveform on drain is
i put rectifier diode and i have +27.5v and -27.9V without condensators on each rail.
without rectifiers the voltage on transformer is really important 108V at powerup
the waveform on gate is
An externally hosted image should be here but it was not working when we last tested it.
the waveform on drain is
An externally hosted image should be here but it was not working when we last tested it.
i put rectifier diode and i have +27.5v and -27.9V without condensators on each rail.
without rectifiers the voltage on transformer is really important 108V at powerup
Install the rail capacitors.
Virtually no amps use a CLC filter at the input. This power supply shouldn't need it. After installing the rail caps, remove the inductor and capacitor to see if it will make a difference.
Virtually no amps use a CLC filter at the input. This power supply shouldn't need it. After installing the rail caps, remove the inductor and capacitor to see if it will make a difference.
I remove the clc filter and i put rail capacitor
It's strange the voltage go to 2x29.8 volts and grow up slowly to 2x30.1 ...2x30.2 etc i stop at 2x30.6 i dont know what is the problem ???
i also replace all resistor already use by new because old serve to test the smps
I have this to gate
to drain
Is it normal ?
It's strange the voltage go to 2x29.8 volts and grow up slowly to 2x30.1 ...2x30.2 etc i stop at 2x30.6 i dont know what is the problem ???
i also replace all resistor already use by new because old serve to test the smps
I have this to gate
An externally hosted image should be here but it was not working when we last tested it.
to drain
An externally hosted image should be here but it was not working when we last tested it.
Is it normal ?
The difference between 29.8 and 30.6 is insignificant.
Where was the black probe placed when you were measuring the voltage?
Where was the black probe placed when you were measuring the voltage?
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