Hi there,
I am having some real issues with a simulation of a basic half bridge bare bones SMPS design.
I wanted to try and understand how a half bridge works and so I used a schematic that I based my LT spice design on... here it is.
View attachment 61751
this is a screen shot of the circuit with the traces.
View attachment 61752
I have also included the actual LT files if someone would like to run it...
First of all its suppose to put out 35 volts... from the net labelled OUT. it doesn't do that.
Second, I am unsure if I have the ground in the right place (on the right side of the power transformer.
Third, when I attached the bridge rectifier the ripple was obscene... there is no load on it... so it should not even budge once the filter caps are full... I would have thought.
Wondering if someone might take a look and tell me why it (a) it doesn't work and then (b) tell me how its suppose to work - the half bridge that is...
Kind Regards
Simon
I am having some real issues with a simulation of a basic half bridge bare bones SMPS design.
I wanted to try and understand how a half bridge works and so I used a schematic that I based my LT spice design on... here it is.
View attachment 61751
this is a screen shot of the circuit with the traces.
View attachment 61752
I have also included the actual LT files if someone would like to run it...
First of all its suppose to put out 35 volts... from the net labelled OUT. it doesn't do that.
Second, I am unsure if I have the ground in the right place (on the right side of the power transformer.
Third, when I attached the bridge rectifier the ripple was obscene... there is no load on it... so it should not even budge once the filter caps are full... I would have thought.
Wondering if someone might take a look and tell me why it (a) it doesn't work and then (b) tell me how its suppose to work - the half bridge that is...
Kind Regards
Simon
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