AW: Re: Aw: [EVGRAY] Re: buck plug ...

Hi Warren, I have already set up the circuit separately and put on terminals. Cooling is a problem and weak semiconductors. laughing. Here are so many cheap semiconductors sold in the high-power area because they no longer wants to have. I think I get the temperatures under control. The tight tolerances of the components of 0.003 worries me more. If the system stable runs permanently I want to balance the tolerances. I would be interested in which components are particularly important. Greetings Sven


Von Samsung Mobile gesendet

-------- Ursprüngliche Nachricht --------
Von: "Warren Keillor [email protected] [EVGRAY]" <[email protected]> 
Datum:18.01.2018  18:08  (GMT+01:00) 
An: [email protected] 
Betreff: Re: Aw: [EVGRAY] Re: buck plug ... 

Sven

The idea of a universal stand alone diode plug is a good one.
It would just need connectors to the outside, and have its own box(or liquid filled tub)
Cheers Warren

Sent from Yahoo Mail on Android

On Thu, Jan 18, 2018 at 9:56 AM, 'Sven Friedrich' [email protected] [EVGRAY]
<[email protected]> wrote:
 
Hi Ole,

So I already had the right nose. But I think that's what we want to reap, harness that energy. Since this energy is very destructive, I think that Hector has used 180 amp diodes because they temporarily hold enormous currents, sometimes several 1000 amperes for milliseconds.

I have a datasheet of my last achievement here.

I would like to make the diode plug Universal Testbar and above all overloadable.

In any case, the fact is that the large diodes or thyristors do not heat up as much as the small ones despite the same cooler.
Since the internal resistance is also very small, it is no longer possible to generate much power loss here..

Of course, connecting a diode to a spark gap is very destructive and not my intention.

I need someone who helps me who is excited about it.
I do not know how far others have gone now with the diode plug and what experiences they have made.
Through the coupling capacitors and reactors, the diode plug has reached a whole new dimension, I think. The components are now much more burdened than before.

For the reactors I wanted to test digit transformers as an adjustable impedance, unfortunately I only have one so that you can tune during operation.

regards

Sven
 
Gesendet: Donnerstag, 18. Januar 2018 um 13:05 Uhr
Von: "[email protected] [EVGRAY]" <[email protected]>
An: [email protected]
Betreff: [EVGRAY] Re: buck plug ...
 
Hi Sven, Hector,

Fast discharge is avalanche discharge or a solid state spark through the semiconducting crystal. Even though this mode gives the lowest impedance it still dissipates a lot of heat. Avalanche discharge happens extremely fast and can be used to generate nanosecond or even picosecond pulses. This of course requires a low impedance transmission line (like 50 Ohm coaxial cable) to be able to carry such fast pulses away from the device. Else the energy is radiated (EMP).

The fusing energy may be given as i2t or avalanche current or avalanche energy in the datasheet. Stay below that value if not intending to use the device as an expensive fuse. If protection is wanted use a fuse having lower fusing energy than the device or make the device shut off before reaching that level. Remember a snubber to catch any inductive kickback energy (flyback voltage) from reaching the device after cutting off at high current. The snubber must be able to dissipate (or store) the stored magnetic inductive energy causing the flyback voltage.

Regards
Ole


---In [email protected], <arkresearch@...> wrote :
 

if they go into fast discharge mode they will blow like a fuse ///

its like the spark gap of a teslacoil pure EMP power !

(H)

SvenPutting all the components in a liquid dielectric coolant would ensure stable operating temperatures, keeping everthing within tolerances.Cheers WRren
Sent from Yahoo Mail on Android 
 
  On Thu, Jan 18, 2018 at 2:40 PM, 'S.friedrich' [email protected] [EVGRAY]<[email protected]> wrote:       

Hi Warren, I have already set up the circuit separately and put on terminals. Cooling is a problem and weak semiconductors. laughing. Here are so many cheap semiconductors sold in the high-power area because they no longer wants to have. I think I get the temperatures under control. The tight tolerances of the components of 0.003 worries me more. If the system stable runs permanently I want to balance the tolerances. I would be interested in which components are particularly important. Greetings Sven

Von Samsung Mobile gesendet

-------- Ursprüngliche Nachricht --------
Von: "Warren Keillor [email protected] [EVGRAY]" 
Datum:18.01.2018 18:08 (GMT+01:00) 
An: [email protected] 
Betreff: Re: Aw: [EVGRAY] Re: buck plug ... 

   
Sven
The idea of a universal stand alone diode plug is a good one.It would just need connectors to the outside, and have its own box(or liquid filled tub)Cheers Warren

Sent from Yahoo Mail on Android 
 
  On Thu, Jan 18, 2018 at 9:56 AM, 'Sven Friedrich' [email protected] [EVGRAY]<[email protected]> wrote:       

Hi Ole,

So I already had the right nose. But I think that's what we want to reap, harness that energy. Since this energy is very destructive, I think that Hector has used 180 amp diodes because they temporarily hold enormous currents, sometimes several 1000 amperes for milliseconds.

I have a datasheet of my last achievement here.

I would like to make the diode plug Universal Testbar and above all overloadable.

In any case, the fact is that the large diodes or thyristors do not heat up as much as the small ones despite the same cooler.
Since the internal resistance is also very small, it is no longer possible to generate much power loss here..

Of course, connecting a diode to a spark gap is very destructive and not my intention.

I need someone who helps me who is excited about it.
I do not know how far others have gone now with the diode plug and what experiences they have made.
Through the coupling capacitors and reactors, the diode plug has reached a whole new dimension, I think. The components are now much more burdened than before.

For the reactors I wanted to test digit transformers as an adjustable impedance, unfortunately I only have one so that you can tune during operation.

regards

Sven Gesendet: Donnerstag, 18. Januar 2018 um 13:05 Uhr
Von: "[email protected] [EVGRAY]" <[email protected]>
An: [email protected]
Betreff: [EVGRAY] Re: buck plug ... 
Hi Sven, Hector,

Fast discharge is avalanche discharge or a solid state spark through the semiconducting crystal. Even though this mode gives the lowest impedance it still dissipates a lot of heat. Avalanche discharge happens extremely fast and can be used to generate nanosecond or even picosecond pulses. This of course requires a low impedance transmission line (like 50 Ohm coaxial cable) to be able to carry such fast pulses away from the device. Else the energy is radiated (EMP).

The fusing energy may be given as i2t or avalanche current or avalanche energy in the datasheet. Stay below that value if not intending to use the device as an expensive fuse. If protection is wanted use a fuse having lower fusing energy than the device or make the device shut off before reaching that level. Remember a snubber to catch any inductive kickback energy (flyback voltage) from reaching the device after cutting off at high current. The snubber must be able to dissipate (or store) the stored magnetic inductive energy causing the flyback voltage.

Regards
Ole


---In [email protected], <arkresearch@...> wrote :
 
if they go into fast discharge mode they will blow like a fuse ///

its like the spark gap of a teslacoil pure EMP power !

(H) 
 
    


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Hi Warren,

I am not familiar with such liquids and changes to the circuit will be very difficult.
It should also be simple and reproducible.

regards

Sven

Hi Sven
 Warren's idea is very simple - find a large pan, ffill it with non-conductive liquid like vegetable oil or whatever will work and set your entire circuit inside the pan to keep it cool....you could also have a pump to circulate the fluid outside the pan and have fan to keep it cooler...
 ciaoKone

Hi Douglas,

The idea as a final solution is certainly optimal, but as long as I keep screwing around it will be a huge mess. laughing

I have now mounted an even larger passive cooler for the thyristors. the last small diode 100 ampere diode replaced by a 180 ampere thyristor diode. The return diodes have always been particularly hot I have replaced by 200 ampere thyristor diodes.

Thyristor diode means that I use the built-in diode in the thyristor only as a high power diode, these modules are cheaper than single diodes in the power class. I have now arranged the cooler so that a fan all can flow through with air.

The whole thing is experimental and has to be changed again and again.

The tolerances make me worry much more. The high-power elements have my view lower tolerances as the small diodes but they are still at kapp less than one percent. Diodes to find exactly the same I have not found yet. To adjust the capacity I imagine easier by switching small capacitors in parallel and adjust the inductance by winding itself is still feasible.

I have here still 3x Micrometals T400 26D cores lie if the are useful as a reactor in Diodeplug mode?

Here are a few pictures of the new configuration and the transformer cores that I want to wrap myself, each weighing 1.5 kg.

regards

Sven

SvenAs usual, your work is simply awesome!It frightens me that the solid state method seems so difficult.I start to think of mechanical parallels to such a system, falling into that familiar world I can control, rather than stretching into your your very demanding area of thyristers.Keep up your good workCheers Warren
Sent from Yahoo Mail on Android 
 
  On Sun, Jan 21, 2018 at 7:23 AM, [email protected] [EVGRAY]<[email protected]> wrote:       
Hi Douglas,

The idea as a final solution is certainly optimal, but as long as I keep screwing around it will be a huge mess. laughing

I have now mounted an even larger passive cooler for the thyristors. the last small diode 100 ampere diode replaced by a 180 ampere thyristor diode. The return diodes have always been particularly hot I have replaced by 200 ampere thyristor diodes.

Thyristor diode means that I use the built-in diode in the thyristor only as a high power diode, these modules are cheaper than single diodes in the power class. I have now arranged the cooler so that a fan all can flow through with air.

The whole thing is experimental and has to be changed again and again.

The tolerances make me worry much more. The high-power elements have my view lower tolerances as the small diodes but they are still at kapp less than one percent. Diodes to find exactly the same I have not found yet. To adjust the capacity I imagine easier by switching small capacitors in parallel and adjust the inductance by winding itself is still feasible.

I have here still 3x Micrometals T400 26D cores lie if the are useful as a reactor in Diodeplug mode?

Here are a few pictures of the new configuration and the transformer cores that I want to wrap myself, each weighing 1.5 kg.

regards

Sven
  #yiv8471873859 #yiv8471873859 -- #yiv8471873859ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#yiv8471873859 #yiv8471873859ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv8471873859 #yiv8471873859ygrp-mkp #yiv8471873859hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#yiv8471873859 #yiv8471873859ygrp-mkp #yiv8471873859ads {margin-bottom:10px;}#yiv8471873859 #yiv8471873859ygrp-mkp .yiv8471873859ad {padding:0 0;}#yiv8471873859 #yiv8471873859ygrp-mkp .yiv8471873859ad p {margin:0;}#yiv8471873859 #yiv8471873859ygrp-mkp .yiv8471873859ad a {color:#0000ff;text-decoration:none;}#yiv8471873859 #yiv8471873859ygrp-sponsor #yiv8471873859ygrp-lc {font-family:Arial;}#yiv8471873859 #yiv8471873859ygrp-sponsor #yiv8471873859ygrp-lc #yiv8471873859hd {margin:10px 0px;font-weight:700;font-size:78%;line-height:122%;}#yiv8471873859 #yiv8471873859ygrp-sponsor #yiv8471873859ygrp-lc .yiv8471873859ad {margin-bottom:10px;padding:0 0;}#yiv8471873859 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Hello Warren,

the thermal problem is not solved yet the sensitivity of the components to experiment properly. The crashes also when adjusted by the uneven discharges in the transformer.

It is very difficult

I still have a thyristor with a diode that I can use.

regards

Sven