I've got some irregularities that I can't troubleshoot. I've been comparing our circuits back and forth/checking the scope for over an hour now and I just can't find any differences at all. First our output voltages and currents match exactly, so... There's that. Everything else is off though. Vg1 is reading 105 volts, Vp1 is 100 (it's like it's referencing ground somehow, but it's also more than {Vin} so maybe not? Lowside/M2/Vg2 is firing at 5v on my scope but there's no Drain-Source reading, just the 0-100V from M1/highside. I've got similarly odd things going on with the secondary winding/L2. Again though, our Out readings are identical. Very strange. Anyway man, look thanks for making these videos and I saw you put 2 more up today. I decided to just go through every circuit you've made, I've done a few already. I'm a bricklayer trying to learn electrical engineering and the style of your videos is perfect. It's helping so much man, thanks.
1) run the simulation step by step 2) check ground symbol left and right 3)check gate mosfet names and nodes (are they the same?) 4) Remember to put K L1 L2 1 as a Spice directive and not as a comment
Nope, the resonant LLC circuit has the transformer, and the series capacitor. The ZVS condition is obtained in that kind of circuit, this is a pure DC-DC Half bridge Hard switching topology
![[LTSPICE] 3kW LLC Resonator Soft Switching](http://i.ytimg.com/vi/plh6mb6SnPg/mqdefault.jpg)
![[LTSPICE] 3kW LLC Resonator Soft Switching](/img/tr.png)
I've got some irregularities that I can't troubleshoot. I've been comparing our circuits back and forth/checking the scope for over an hour now and I just can't find any differences at all.
First our output voltages and currents match exactly, so... There's that.
Everything else is off though. Vg1 is reading 105 volts, Vp1 is 100 (it's like it's referencing ground somehow, but it's also more than {Vin} so maybe not?
Lowside/M2/Vg2 is firing at 5v on my scope but there's no Drain-Source reading, just the 0-100V from M1/highside. I've got similarly odd things going on with the secondary winding/L2.
Again though, our Out readings are identical. Very strange.
Anyway man, look thanks for making these videos and I saw you put 2 more up today. I decided to just go through every circuit you've made, I've done a few already. I'm a bricklayer trying to learn electrical engineering and the style of your videos is perfect. It's helping so much man, thanks.
I use this setup for the lower switch PULSE(0 20 {D/Fs} 1n 1n {(1-D)/Fs-Dead} 1/Fs-Dead)
and yet the gate voltage is zero. What could be the problem?
I did the same circuit you do but my Vg1 is reading from 50v to 55v !!!?
Why mosfet having current spikes?
I do everything as in the video, but the simulation does not open. what would be the reason?
1) run the simulation step by step
2) check ground symbol left and right
3)check gate mosfet names and nodes (are they the same?)
4) Remember to put K L1 L2 1 as a Spice directive and not as a comment
@@manoA98A thank u. i forgot 4 my bad
hi, is that curcuit is resonant (ZVS) ?
Nope, the resonant LLC circuit has the transformer, and the series capacitor. The ZVS condition is obtained in that kind of circuit, this is a pure DC-DC Half bridge Hard switching topology