Kapanadze Cousin - DALLY FREE ENERGY

[apecore]

for apecore,


TC4420 is non inverting driver, you don't have a ''signal --the driver start later'' in left part of sinusoidal signal
Itsu have the same problem with ucc non-inverting, he makes a movie with that problem.
Maybe you must use an inverting driver TC4429

Ok,... i understand.
I will put inverters on both signals from the drivers,...  this must solve the timing issue.
Thanks Conico

[AlienGrey]

for apecore,


TC4420 is non-inverting driver, you don't have a ''signal --the driver start later'' in left part of sinusoidal signal
Itsu have the same problem with ucc non-inverting, he makes a movie with that problem.
Maybe you must use an inverting driver TC4429

i think your on about Sergey circuit on the perforated pcb on top of the heat sink, it's faulty and it doen't work correctly depending on circuit though, can you use 2 spr gates on th 74hc00 before it goes into the UCC3722 chip (the driver) as it's a crap circuit.

AG

[apecore]

i think your on about Sirgay circuit on the perferated pcb on top of the heat sink, it's faulty and it doen't work correctly depending on circuit though, can you use 2 spr gates on th 74hc00 as it's a crap circuit.

AG

AG,
The left circuit is not Sergey,...  your right that doesn't work..  (if you mean that)
This circuit is the same T1000 posted as a example for Nick,..  vew post ago.

It works,...  but timing is not right.
Conico is right,... i use a different pushpull driver circuit,...  and its inverting the gate signal...
Only thing i do is put a inverter 74HC00 before pin 1 of the 74HC14,....  (U3A),... thats the most easy thing to try out.

Cheers

[verpies]

@Verpies

Attached is a HS N-channel mosfet driver. What i would like is to utilize the negative peak at mosfet's drain and charge with it some caps. My question is if C1 will absorb some of the negative peak's energy, as this is something that i don't want to. If you think so, then i should move to LS P-channel. What is your opinion?

Yes, as soon as the drain of the N-ch MOSFET swings below +287.4V, the diode D1 will start conducting and capacitors C1 & C2 will charge up, which means that they will draw current from that drain terminal.  That acquired capacitor charge will represent energy according to W=½CV²

I surmise that your goal is to construct a controllable pull-up to the +300V rail.  If that conclusion is in error then disregard the advice below.

If you connect the drain of the N-ch MOSFET to the +300V power supply, then it will still work as long as you apply +12V to its gate wrt to its source, but that +12V has to be floating, e.g. created by an isolated DC-DC converter, pulse transformer, or these bootstrap caps.

If you use a P-ch MOSFET then its source should be connected to the +300V power supply, and the pulses applied to its gate should be going down to +288V.  Anything less than +280V will destroy the MOSFET.
That can be accomplished with a second power supply, e.g -12V connected in series with the +300V power supply or with +288V and +12V supplies, pulse transformer ...or a swinging choke like we've done once with Itsu here.

[AlienGrey]

Yes, as soon as the drain of the N-ch MOSFET swings below +287.4V, the diode D1 will start conducting and capacitors C1 & C2 will charge up, which means that they will draw current from that drain terminal.  That acquired capacitor charge will represent energy according to W=½CV²

I surmise that your goal is to construct a controllable pull-up to the +300V rail.  If that conclusion is in error then disregard the advice below.

If you connect the drain of the N-ch MOSFET to the +300V power supply, then it will still work as long as you apply +12V to its gate wrt to its source, but that +12V has to be floating, e.g. created by an isolated DC-DC converter, pulse transformer, or these bootstrap caps.

If you use a P-ch MOSFET then its source should be connected to the +300V power supply, and the pulses applied to its gate should be going down to +288V.  Anything less than +280V will destroy the MOSFET.
That can be accomplished with a second power supply, e.g -12V connected in series with the +300V power supply or with +288V and +12V supplies, pulse transformer ...or a swinging choke like we've done once with Itsu here.

Verpies  it's restricted, who is the gate-keeper ? did you use an opto driver and separate power supply ?

Apecore,  ist's a yessssss! anyway I got it to work in the end the circuit, but I have to rewire it all up again when the waveguide assembly is finished and pre-tuned on the bench and all remounted on the support ply would strip.