You do understand why the CFL light up with your circuit ? you only excite the gaz inside the CFL with HV, a simple step up transformer can do that too. i dont mean your circuit dont do more than that but can you make a video with normal bulble light ? if it light up like the CFL that will be realy interresting.
Hey Lidmotor, you and your gang of swashbuckling rogues...
You know how if you connect a diode directly across a battery, one way nothing happens, and the other way the diode blows up in a tenth of a second.
In your NPN transistors, from the base to the emitter there is a diode. You even see the diode in the transistor symbol. So one way to fry a transistor is to forward bias the PN junction (base to emitter) of the NPN transistor without having a current limiting resistor at the base input.
Another way to kill a transistor is to have the transistor fully on (provide enough base current) with nothing to limit the current across the collector to emitter. For example, connect a battery directly across the collector and emitter.
Another way to kill a transistor is to provide too much driving voltage when the transistor is partially conducting, and acting as a resistor.
All the above dissipate too much power in the transistor and it fries itself, burning the silicon.
When you look at the circuit, and take into account my comments above, you might see some design flaws. Note however, that your big 25-ohm rheostat effectively eliminates the design flaws if you make sure it limits the maximum current.
A hint is the primary of the ignition coil. It's an inductor, so within a fraction of a second when the current going through it is DC, it acts like a short circuit (actually a very low value resistor, you could measure it).
Exactly, so the trick is to make sure there are no conduction paths from the battery terminals through the transistor without anything to limit the current.
Assuming no 25-ohm rheostat, if the left power transistor is fully on for more then a fraction of a second for whatever reason, the coil primary becomes a short-circuit, and the battery is then being shorted through the power transistor collector-to-emitter junction, and the battery wins, the transistor gets fried.
In some of the other variations of this circuit you can see how there is the possibility of the battery being short-circuited across the two transistor base-emitter junctions that effectively look like a pair of diodes in series. No current limiting resistor there, and *poof* the diodes inside the transistor pair are fried.
This circuit needs a kick start. Other variations self-start because there is always electrical noise in the circuit, derived from random currents due to thermal energy.
Another truly excellent video Lidmotor! Your videos make me feel like I just came by to hang out for a bit. You talk to us like we're all friends... very enjoyable as well as educational. Don Smith used high voltage pulses to draw current from ground and ran that through one side of a transformer with the load on the opposite side. Some of his devices are capable of developing several thousand watts... Best regards!
As far as your earth ground work, Nikola Tesla said that the earth was a limitless source of electrons, so I can see why other people have had sucuss with a seemingly backwards diode earth ground leads. Have you achieved inductance of a sort with the earth??
Now as far as all the broadcast high voltage, Tesla's experiments always included identical "sending and recieving coils"
Thanks, I will be using an identical ignition coil as the receiver. I have just started working on the receiver circuit part. Lots of research left to be done.
The kick starter burned out the transistors because 2n3055's are only rated for 60 volts.
TheClawsofangels 1 month ago
COOL!!!
MoonSpyStudios 3 years ago
You do understand why the CFL light up with your circuit ? you only excite the gaz inside the CFL with HV, a simple step up transformer can do that too. i dont mean your circuit dont do more than that but can you make a video with normal bulble light ? if it light up like the CFL that will be realy interresting.
Best Regards,
IceStorm
IceStorm5555 3 years ago
yeh but you can catch the back emf off the primary coil and can recharge a secondary battery while lighting a cfl
dodoshlodo 3 years ago
Hey Lidmotor, you and your gang of swashbuckling rogues...
You know how if you connect a diode directly across a battery, one way nothing happens, and the other way the diode blows up in a tenth of a second.
In your NPN transistors, from the base to the emitter there is a diode. You even see the diode in the transistor symbol. So one way to fry a transistor is to forward bias the PN junction (base to emitter) of the NPN transistor without having a current limiting resistor at the base input.
Drevtoobe 3 years ago
Another way to kill a transistor is to have the transistor fully on (provide enough base current) with nothing to limit the current across the collector to emitter. For example, connect a battery directly across the collector and emitter.
Another way to kill a transistor is to provide too much driving voltage when the transistor is partially conducting, and acting as a resistor.
All the above dissipate too much power in the transistor and it fries itself, burning the silicon.
Drevtoobe 3 years ago
When you look at the circuit, and take into account my comments above, you might see some design flaws. Note however, that your big 25-ohm rheostat effectively eliminates the design flaws if you make sure it limits the maximum current.
A hint is the primary of the ignition coil. It's an inductor, so within a fraction of a second when the current going through it is DC, it acts like a short circuit (actually a very low value resistor, you could measure it).
Drevtoobe 3 years ago
Too much power in the wrong place at the wrong time and poof -- transistor death.
Lidmotor 3 years ago
Exactly, so the trick is to make sure there are no conduction paths from the battery terminals through the transistor without anything to limit the current.
Assuming no 25-ohm rheostat, if the left power transistor is fully on for more then a fraction of a second for whatever reason, the coil primary becomes a short-circuit, and the battery is then being shorted through the power transistor collector-to-emitter junction, and the battery wins, the transistor gets fried.
Drevtoobe 3 years ago
In some of the other variations of this circuit you can see how there is the possibility of the battery being short-circuited across the two transistor base-emitter junctions that effectively look like a pair of diodes in series. No current limiting resistor there, and *poof* the diodes inside the transistor pair are fried.
This circuit needs a kick start. Other variations self-start because there is always electrical noise in the circuit, derived from random currents due to thermal energy.
Drevtoobe 3 years ago
Very Nice
Did you try to collect any BEMF from the coil yet?
Would like to see what you can get back from the coil.
GBluer 3 years ago
Yes I have and for some reason it is not working. There does not seem to be any BEMF- just high voltage everywhere. Still working on it.
Lidmotor 3 years ago
Another truly excellent video Lidmotor! Your videos make me feel like I just came by to hang out for a bit. You talk to us like we're all friends... very enjoyable as well as educational. Don Smith used high voltage pulses to draw current from ground and ran that through one side of a transformer with the load on the opposite side. Some of his devices are capable of developing several thousand watts... Best regards!
Valerifon1 3 years ago
Thanks, I will have to do more studying on what to do next.
Lidmotor 3 years ago
You're a great videographer/scientist in my opinion - to the point, very informative and are well narrated. Thanks for the great videos.
webovisionca 3 years ago
Thanks
Lidmotor 3 years ago
WoW!!! Nice work yet again.
As far as your earth ground work, Nikola Tesla said that the earth was a limitless source of electrons, so I can see why other people have had sucuss with a seemingly backwards diode earth ground leads. Have you achieved inductance of a sort with the earth??
Now as far as all the broadcast high voltage, Tesla's experiments always included identical "sending and recieving coils"
Got another ignition coil?????
Cheers!!
Can101276 3 years ago
Thanks, I will be using an identical ignition coil as the receiver. I have just started working on the receiver circuit part. Lots of research left to be done.
Lidmotor 3 years ago