This circuit made me a little bit confused. I get it that I should solder the negative input to one end of the resistor. But the other? I really need someone to explain to me exactly how to connect the resistors. I appreciate any help.

 

The other end of that resistor connects both to one end of the second resistor AND to one side of the flyback winding on the transformer. The other end of the second resistor connects to positive input, as does one side of the transformer primary. And so on.

Without commenting on the design of the circuit itself, the diagram seems pretty clear.

 

In case this is what is confusing you:

The curve indicates where the wiring does NOT make a connection to the horizontal, straight wire. Conventions vary but a solid black dot there would typically indicate a connection. A simple crossing without a dot is ambiguous and should probably be considered a non-connection, like the curve indicates clearly, but it's best to use the context of the surrounding circuitry to make that determination.

In your diagram, a simple crossing such as the one between the two resistors, indicates a connection.

If something else is not clear, just ask.

 

The other end of that resistor connects both to one end of the second resistor AND to one side of the flyback winding on the transformer. The other end of the second resistor connects to positive input, as does one side of the transformer primary. And so on.

Without commenting on the design of the circuit itself, the diagram seems pretty clear.

One more question. Is it ok if I connect one end of the 220 resistor to the Primary coil and then connect the positive power supply to the primary coil?

 

This IS a comment about the circuit design. It is potentially rather dangerous, and also not very likely to work, and if it did work, to not last very long before the transistor overheats and fails.
Is there any description with that circuit??
Where did it come from??

 

This IS a comment about the circuit design. It is potentially rather dangerous, and also not very likely to work, and if it did work, to not last very long before the transistor overheats and fails.
Is there any description with that circuit??
Where did it come from??

From the Plasma Channel video when he makes a high voltage power supply

 

Is it ok if I connect one end of the 220 resistor to the Primary coil and then connect the positive power supply to the primary coil?

sounds like it would be ok

 

Like this? If so then yes.
[edited] drawing was wrong. Sorry.

 

Better still:
[edited] drawing was wrong. Sorry.

 

At least the first alternate circuit puts way too much positive base bias on the transistor. The oscillator will only work if the signal from the feedback winding is able adequately affect the collector current in the correct direction. And the drawing gives no direct clue as to the relative winding polarities. One way may work, the opposite polarity will not work.

 

At least the first alternate circuit puts way too much positive base bias on the transistor. The oscillator will only work if the signal from the feedback winding is able adequately affect the collector current in the correct direction. And the drawing gives no direct clue as to the relative winding polarities. One way may work, the opposite polarity will not work.

any possibile alternative?

 

Better still:
View attachment 334489

Would work, thank you

 

Better still:
View attachment 334489

Haven't you reversed the flyback role?

 

Haven't you reversed the flyback role?

I did not

 

In the original diagram it was held at about 1 volt through the voltage divider, but in Tony's revised diagram it is connected directly to 12V supply through the 220 ohm resistor, which will provide ~50mA(!) base current.

 

it's not going to oscillate

 

The oscillator will only work if the signal from the feedback winding is able adequately affect the collector current in the correct direction. Like post#15 says.

 

And the drawing gives no direct clue as to the relative winding polarities.

Good point.

Haven't you reversed the flyback role?

Not my drawing.

In the original diagram it was held at about 1 volt through the voltage divider, but in Tony's revised diagram it is connected directly to 12V supply through the 220 ohm resistor, which will provide ~50mA(!) base current.

Oops. Yes, you're right. I will have to delete those drawings straight away.