Successful TPU-ECD replication !

[mrd10]

Stefan, it took me no time to wrap the coil, man build it , it will take you no time, then we can have you in there to with your own results, i think this thread is going to have one of the most replications in it...very soon.

common Stefan go for it man.......................



Dom

[hartiberlin]

Why  are you using these expensive driver FETs ?

Why not just control the IRF 840 ?s gate with a parallel circuit
of 3 or 4 schmitttrigger hex inverter ICs like
MM74C14 Hex Schmitt Trigger  ?

Here is a PDF File.

Just put at least 2 or 3 of them parallel and there you go.
Should have enough punch to hit the IRF 840 gate fully open !

http://www.fairchildsemi.com/ds/MM/MM74C14.pdf

[hartiberlin]

Stefan, it took me no time to wrap the coil, man build it , it will take you no time, then we can have you in there to with your own results, i think this thread is going to have one of the most replications in it...very soon.

common Stefan go for it man.......................



Dom

In about 2 weeks I have time to do it.
Am in a hurry now.
C0mster let the videos come in.

Regards, Stefan.

[ronotte]

@Gyulasun,

please paj attention, the schematic posted in my doc TPU=ECD is TESTED on my ECD. Anyway I've just followed the configuration suggested by the constructor of IRF7307 8International Rectifier) that you find attached, please look at fig 9. Using that approach I could use a wide range of posibilities (including the NE555) as input signal.

In my opinion the very low output impedance showed by said 7307 config is just what needed to correctly drive the power MOSFET properly charging his input capacitance augmented by the Miller effect. That's just what needed to drive the MOSFET into avalanche mode - fundamental.

[gyulasun]

Why  are you using these expensive driver FETs ?

Why not just control the IRF 840 ?s gate with a parallel circuit
of 3 or 4 schmitttrigger hex inverter ICs like
MM74C14 Hex Schmitt Trigger  ?

Here is a PDF File.

Just put at least 2 or 3 of them parallel and there you go.
Should have enough punch to hit the IRF 840 gate fully open !

http://www.fairchildsemi.com/ds/MM/MM74C14.pdf

Hi Stefan,

Yes, basically I agree with you (though I would use a dedicated MOSFET driver IC if the switching speed is an issue in the TPU)  but I wanted to answer Louis's  questions.  

Once He wishes to adhere to Roberto+Otto circuit schematics then naturally follows the components too.

Regards
Gyula