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Old 04-09-2017, 01:24 AM
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ET-Power ET-Power is offline
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Join Date: Feb 2017
Location: Republic of California
Posts: 92
Thank You BroMikey! ! !

Can not express to you how thankful I am you shared what you have BroMikey and all of the info, work, and videos you've shared for others over the years. I was about to buy large stock in the MJL21194, so very thankful you shared what you did.

I am about to build a large 2' - 3' diameter motor/generator and it will have either 8 energizer coils and 16 generator/pick up coils, or it's going to have 16 energizer coils and 32 generator/pick up coils. Since I am new at this I am going to start with one energizer coil at a time and work my way up as long as things hold up at the voltages I want to run. My goal is to run it on at least 48V input. I will do the Carlos F. Benitez approach Rick F. has been marketing as "Loving Paths." 48V primary, 24V secondary and rotate them. I really want to input 100V and beyond but will have to experiment and see how the parts hold up.

Your reply to my questions are IMMENSELY APPRECIATED as I was about to invest in ALOT of transistors. Your reply also inspired me to do more research. Based on your reply:

Besides, to date no one has uses any fast or slow
transistor to go orbital OVER-UNITY... Even with a very fast or ultra-fast mosfet no one is looping anything.


I get the impression you are more concerned about max voltage and amps + gains, rather than switching speeds?

What you recommended, the MJL4281A I hadn't heard of before so thank you! I spent two hours flipping through all of the JBT's on Mouser comparing Collector (C) to Emitter (E) Voltage Max, Current Max, Capacitance, Gain, Fall Times, and put them in a spreadsheet... The following are some of the ones that stood out to me as comparable to what you suggested (all in nanoseconds) but none have as quick of a fall time and gain all in the same transistor as you suggested with the MJL4281A.

Hope the below info is of use to someone now or in the future:
MJL4281A, 350V C to E, 15A, 80 - 240 (gains), 5ns (Fall Time)
BUL89, 400V (850V Max), 12A, 10 - 40 (gains), 55 - 80ns (Fall Time)
BUJ106A, 400V (CE/CB 700V), 10A, 10, 20 - 50ns
BUL98, 450V (CE 800V), 12A, 10 - 35, 100ns
BUX48A, 450V (CB 700V), 15A, 5, 55 - 80ns
MJW18020, 450V (CB 1,000V), 30A, 14 - 34, 250 - 500ns
BUL743, 500V (CE 1,200V), 12A, 35 - 80, 500ns
HD1750FX, 800V (CE 1,700V),24A, 1.5 - 5, 250 - 500ns
FJAFS1720, 800V (CB 1,700V), 12A, 8, 60ns


Then there are other great ones but in the microseconds (Ás) there are some good ones as well:
BU931P, 400V, 15A, 300 (Gain), .5Ás (Fall Time)
PHE13009, 400V (CB 700V), 12A, 8 - 40 (Gain), .1 - .5Ás (Fall Time)
BUF420AW, 450V (CE 1,000V), 30A, 2 - 5, .1Ás
MD2001FX , 700V (CE 1,500V), 12A, 4.5 - 7, .2Ás
MD2310FX, 700V (CE 1,500V), 14A, 6 - 8.5, .25Ás
ST1510FX, 750V (CE 1,500V), 12A, 15 - 28, .2Ás
FJL6920, 800V (CB 1,700V), 20A, 8, .2Ás


CAN ANYONE WHO HAS RAN 48V INPUT, OR PREFERABLY CLOSE TO 100V OR HIGHER DIALED IN THE REQUIRED TRANSISTOR VOLTAGE TO MAKE A PROPER CIRCUIT WITHOUT FRYING THE COMPONENTS FROM THE VOLTAGE SPIKES?!?!!?!?!?

@BroMikey:

I can charge a 36v bank and run the pulses up to over a 100 volts
with spikes way up there and she won't fry out.


Are you saying that you're inputting 100V???


Is that with a pulse width modulator or pulse generator?!?!?!

I want to run my system on something much more than 48V for experimental and purposes of personal fun to see what it can really do... Newman use to run his motors @ 900V LOL!

Higher Voltage, Less Current = less Lenz Effects

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