Hello,
I've been a reader of this forum for a while now, thanks to everyone who makes all the information in here available!
Now to my problem, I'm trying to build a wireless battery charger based on a flyback converter design. I've designed the modules and separately everything works, but when together, they dont:
1) DC power supply as source
2) Oscillator circuit - NE555 - tested and behaves I wish on a frequency close to what I want, about 43 kHz.
3) "flyback" converter - Coupled inductive coils + Ac-DC converter - tested and works successfully from 40-50 kHz with square, triangle, sine, offset, etc waves.
When I try to power up circuit (3) with the output of the 555 timer, nothing works, I have no idea why.
I also attempted driving a mosfet (irf5400 - no success at all) and a bjt(2n5401 - drives the transistor, but again as soon as the load is connected, nothing happens).
I think the problem might be related to waveform spikes in voltage generated at the receiving circuit (see oscilloscope photo).
I'm stuck at the moment, not sure what to do to successfully get the square waveform at some voltage to my flyback converter circuit.
All helps is appreciated.
Thanks
I've been a reader of this forum for a while now, thanks to everyone who makes all the information in here available!
Now to my problem, I'm trying to build a wireless battery charger based on a flyback converter design. I've designed the modules and separately everything works, but when together, they dont:
1) DC power supply as source
2) Oscillator circuit - NE555 - tested and behaves I wish on a frequency close to what I want, about 43 kHz.
3) "flyback" converter - Coupled inductive coils + Ac-DC converter - tested and works successfully from 40-50 kHz with square, triangle, sine, offset, etc waves.
When I try to power up circuit (3) with the output of the 555 timer, nothing works, I have no idea why.
I also attempted driving a mosfet (irf5400 - no success at all) and a bjt(2n5401 - drives the transistor, but again as soon as the load is connected, nothing happens).
I think the problem might be related to waveform spikes in voltage generated at the receiving circuit (see oscilloscope photo).
I'm stuck at the moment, not sure what to do to successfully get the square waveform at some voltage to my flyback converter circuit.
All helps is appreciated.
Thanks
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