Bora is a nice guy from Serbia - Yugoslávia

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#401
Bora produces great amplifiers.

The ones i have tried impressed me a lot..all them sounding much higher than the average performance.

Long and healthfull life to Bora... an outstanding productive life as we can see.

Several amplifiers, very creative and using various topologies and ideas, each one of them having their own sonic signature.

Precise, high fidelity, some of them perfect to be used as studio monitors.... i can remember very well that the Techno amplifier revealed to me instruments i have never listened into some of mine recordings.

I am happy we have you Bora.

regards,

Carlos

......................................................................................................

Very different than several arrogant western folks, Bora is productive, while people discuss the sex of the angels (when they do not even if they have sex), Bora produces!

Someone to feel pride to the ones are leaving in Eastern Europe.... very near the place were the magnificent genius has born...Vicktor Tesla.

I want you to know he is my friend.... this increases my value..this honors me a lot.

I am a Bora's friend...yes!....ME!

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An externally hosted image should be here but it was not working when we last tested it.
 
#402
I already have a functional Studio amplifier and soon to be finished Techno (aka Modus). Excellent amplifiers at low cost and as one of my collegues said "Techno is a Hi-End low budget amplifier". All i can say is that it is not easy to find such open minded and person who is unselfishly willing to help as Bora.
 
#404
Sorry folks...Nikola tesla... the one gone to USA

and have worked with Thomas Alva Edison...the one have tried, and had some good results, to transmit energy without wires.

I think he has born in Croatia.... his name is Никола Тесла

Watching the map, seems not too much distant from Bora's country.

regards,

Carlos
 

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#406
yes, Nicola's wireless fluorescent style wander light would be ideal for working under a car or even in a car pit. It would have many other uses.
Install the transmitting coil around the house and take your lamps to wherever you happen to need them.

Why has it never caught on?
 
#407
Legend stage master

Hi everybody,

I have just finished Legend stage master, one of the Dr Bora's amplifier design. I have tested the amplifier and it sounds really good. I really appreciate the help he has provided me during the project. Dr. Bora is very nice and helpful guy. If somebody really wants 250Wrms into 8 Ohm he must try this Legend stage master design.
Once again I am thankful to Dr Bora (Sir)

Regards
Wasim
 

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#408
AndrewT said:
yes, Nicola's wireless fluorescent style wander light would be ideal for working under a car or even in a car pit. It would have many other uses.
Install the transmitting coil around the house and take your lamps to wherever you happen to need them.

Why has it never caught on?
Click to expand...

Though you often tend to embarrass yourself, you overdid it this time. Read at least this.

It might be that you have no time to read (because you write so much) but one thing should not escape your attention: without inventions of the man you so shamelessly mock, humanity would be deprived of alternating current (he is the father of rotating magnetic field, polyphase system...) and many other corner-stones of modern civilization.

Sorry for the late remark, but this is really over the top.
Now go and cry to the mods, but please don't insult the man who made it possible for you.
 
#409
Never worked because huge and enormous losses into the magnetic transmission

Each meter represents a huge loss of energy, so, that transmission was never aproved for comercial uses.

Despite of that, Tesla was one of the most important genius we have...he was so advanced compared with people that lived those early days that make me think if he was a really human or a hibrid from a more advanced civilization.

Bora is also more intelligent than the average...we, normal humans, must be very boring to him.

regards,

Carlos
 
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#410
juma said:
........ inventions of the man you so shamelessly mock, humanity

but this is really over the top.
Now go and cry to the mods, but please don't insult the man who made it possible for you.
Click to expand...
I am not mocking Tesla.
I have pointed out that he invented a wireless wander light.
I further showed a couple of examples of where a modern version could be very useful.
Finally I asked
Why has it never caught on?
Click to expand...
I think you have an agenda that has clouded your reasoning.
Tesla was a brilliant inventor.
I admire him and what he achieved.
You have read something I never wrote.
 
#411
My 2 cents...

Anyone that dreamed we could transmit electricity into the air and retieve it had to be a great mind. Mr. Edison, Mr. Ford, and Mr. Goodyear would be proud to be in the same room as Mr. Tesla. Some of our greatest ideas turned fact have often come to fruition post mortem. Relax and enjoy the ride...

You may all go back to what you where doing.

Regards, Elwood
 
#413
Hi everyone,

Can anyone check this interconnection diagram and correct it? I am using two powersupplies. I would also like to use seperate transf. for 7VAC.
In other diagram can anyone guide me if I use +/- 70VDC what are the values of these * marked resistors. I am very thankful for the help.

Regards
 

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#414
Dearest Carlos et Al...

Please accept my apologies as my remarks are sincere and are not intended to offend anyone. Mr. Tesla, Edison, Marconi and the lot are all great pioneers of what we take for granted now, if not for them we may not have our beloved amplifiers or transistors for that matter. What a dreary place this would be without our ability to reproduce music with the wonders that we possess today.

Thanks in advance for the privelege to express my opinions.

Humbly yours, Elwood
 
#415
Wasim said:
Hi everyone,

Can anyone check this interconnection diagram and correct it? I am using two powersupplies. I would also like to use seperate transf. for 7VAC.
In other diagram can anyone guide me if I use +/- 70VDC what are the values of these * marked resistors. I am very thankful for the help.

Regards
Click to expand...

I'll help you around the resistor values, but above all should pay attention to several things.Capacitor of 100uF 16V should be replaced with a capacitor of 100uF 50V-63V because it is parallel with the Zener diode of 36V.Two of the 68K resistor at pin 3 and 4 I replaced with two resistors of 56K because I wanted to reduce the response DC protection.All Zener diodes are 1.5W.Capacitor of 100uF 16V would be desirable to replace the 100uF 25V because it is parallel with the Zener diode of 13V. Accessory input serves to add some additional protection such as temperature protection. resistor of 56K may need to be changed
with 47K or 33K, so if the LED is not glowing then reduced to 47K ... 33K.
2 * 10uF next LF353 are 25V. Resistor of 4.7K, above T7, determines the current through the LED, with a 4.7K current is approximately 2.5mA if Vf diode approximately 2V.Resistor of 3.3ohm sets minimum impedance speakers will be connected to an amplifier. Two capacitors of 10uF next LM7824 are 50V-100V.
 
#416
!

You watch the picture from above ...

Resistor that goes to the + V is about 3.9K, better to take 2W.

Resistor that goes to the -V is about 12K, better to take 2W.

For the two resistors in a red circle take the 7.5K or 8.2K, better to take 2W.

Another resistor should be calculated from the pin 13 and LM7824, this is perhaps the most difficult part of the job! Protection has two states, one state relay when switched off and another when engaged when the amplifier connected to the speaker...

You have to choose the relay and immediately see that the resistance spool, or find information how mA spent relay. Which relay are thought to use?
 
#417
Hi viktor1986,

Thanks for the reply. I will change the components as you described. Look at the OMNI protection and The relays I am using. Can you please`also check the interconnection diagram. I also need to correct it. Can I use a separate transformer for 7VAC ? I really appreciate your help.

Regards
 

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#418
Find on Google Datasheet for the relay and see resistance of the coil.If you can not find data on the resistance of the coil take good multimeter and measured. Using Ohm's Law get electricity! This is the total amount of electricity which passes through the relays as relays are connected serial.

Find information about the resistance of the coil relay or measured and write down here.Ok?

Connection is not good, after we see it, the first around these resistor values
 
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