franticEB
Full Member level 3
![Full Member level 3](/styles/images/ranks/elevel3.gif)
Hi i have a problem with this circuit:
![wdtot.jpg wdtot.jpg](https://www.edaboard.com/data/attachments/27/27084-e6f38575b66663c092f0dae45448e49f.jpg)
on output of the first transformer (OUT1) i measure an important ringing in corrispondence of the closing of the mos as in figure.
![wdonde.jpg wdonde.jpg](https://www.edaboard.com/data/attachments/27/27085-29c241240e2a5be4c619e1e069375542.jpg)
The problem is that i want to measure a DC voltage of 4 Volts (result of transformer ratio) where i draw a red arrow (OUT4), but i measure the voltage given by the peaks of the square wave.
The switch is controlled by microcontroller: when open through an A/D tre micro reads 0 of pull-down 10k resistor, when closed 7.5 Volts.
I tried to solve the problem putting a SNUBBER circuit on primary of both transformers but it doesn't delete the disturbance. 8-O
How can I do in order to avoid this problem?
![wdtot.jpg wdtot.jpg](https://www.edaboard.com/data/attachments/27/27084-e6f38575b66663c092f0dae45448e49f.jpg)
on output of the first transformer (OUT1) i measure an important ringing in corrispondence of the closing of the mos as in figure.
![wdonde.jpg wdonde.jpg](https://www.edaboard.com/data/attachments/27/27085-29c241240e2a5be4c619e1e069375542.jpg)
The problem is that i want to measure a DC voltage of 4 Volts (result of transformer ratio) where i draw a red arrow (OUT4), but i measure the voltage given by the peaks of the square wave.
The switch is controlled by microcontroller: when open through an A/D tre micro reads 0 of pull-down 10k resistor, when closed 7.5 Volts.
I tried to solve the problem putting a SNUBBER circuit on primary of both transformers but it doesn't delete the disturbance. 8-O
How can I do in order to avoid this problem?