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Beginners / Re: 555 driver and Transformer questions
« Last post by DanMann on Today at 09:09:48 pm »can you explain to me what to look for in the schematic that shows a strong DC offset? C1, R1, R2 I gave no values, but can very close to a 50/50 time.
I think I am starting to understand the scope a little more with some reading.
Please help me if I am wrong:
Top picture shows a 0 voltage on one box down from center line, rises up to 5 volts with some spiked up to the 7.45 volts?
the very narrow spikes are the -35 volts?
It shows a 57% duty cycle which I assume to be based on the 0 to+5 volts?
this actually drives the transformer but think it can be better.
With 6Vdc input, how is it generating the -35 volts? Could it be feedback voltage from the HV made by the transformer?
I have been playing and can get a fairly square wave. Once I introduce the MOSFET I can get a very different wave where the drop to minus is thin but curves for the remainder of the time up to zero.
Being that the transformer is not yet connected I am thinking wrong MOSFET or maybe I damaged it.
Thank you for your help.
I think I am starting to understand the scope a little more with some reading.
Please help me if I am wrong:
Top picture shows a 0 voltage on one box down from center line, rises up to 5 volts with some spiked up to the 7.45 volts?
the very narrow spikes are the -35 volts?
It shows a 57% duty cycle which I assume to be based on the 0 to+5 volts?
this actually drives the transformer but think it can be better.
With 6Vdc input, how is it generating the -35 volts? Could it be feedback voltage from the HV made by the transformer?
I have been playing and can get a fairly square wave. Once I introduce the MOSFET I can get a very different wave where the drop to minus is thin but curves for the remainder of the time up to zero.
Being that the transformer is not yet connected I am thinking wrong MOSFET or maybe I damaged it.
Thank you for your help.