How to approach making a coil for Infinium

[echo]

Hi Rov,

thanks very much for posting the Double D configuration.

I have drawn up a basic diagram to show the connectivity and I'll buzz out the pins on the multipin connector and identify which pin goes to each color.

I also have an inductance meter so I'll also measure both coils and I'm hoping that the 680 ohm resistor won't throw out the inductance reading too much.

[Rov]

Yes echo this diagram appears correct.
I did a recount of turns wound for the Black kynar wire coil ,was 42 turns. so please amend.
did a quick check of each coil for L=0.56uH for brown coil.an L=249.4uH for the black coil with No resistor in circuit.hope this may match for you.
As for Plug pinouts.
From front face of plug which is stepped in shape.
Top left exposed pin is Green
Top right exposed pin is red
Lower left pin socket is Black,with screen an Foil wrap to this.
Lower right pin socket is White.
Yes the 5 core coil cable is foil wrapped in the sheath an cable has polycore twine reinforcing for added strenght an stretch resistance.
The Metal of the plug housing an knurled ring is not connected to anyscreen wire or other.
Rov

[Rov]

a quick pic of the plug.
Rov

[GoldenKiwi]

Hi Rov, many thanks for the coil sacrifice and the information. Very interesting. Do you know which is the TX and which is the RX?

I'm surprised there are no active components inside. Perhaps only the Mono has active components?

Cheers
GK

[Tim Williams]

Can anyone tell me if there is active components in the mono coil? Has anyone opened one? I have some test coil from Rov but like to make sure it's correct before connecting.

[PiQuest]

ABOUT WEST COILS, ONCE TALKED TO A COIL MAKER ABOUT HOW THE WEST COILS WHERE MADE, HE SAID NONE OF THERE COILS HAD ANY THING BEYOND A RESISTOR. BOTH MONO AND DD, MONO'S WHERE CONFIGURED LIKE A CONCENTRIC. CONCENTRIC PI COILS ARE MADE FOR OTHER PI MD'S!

[inventor]

I'm interested in a 18" mono. If you have info please email me.
Tim

Hi Rov
lam interested in making a 18" mono for my infinium, Can i get some info on how to construct one. THAnks

Regards

Rick

[adrian ss]

Infinium Monos

The only components that I can invisage with fair certainty, in the mono coils, is two voltage limiting diodes connected between the coils. Whether there is a damping resistance I do not know. This may not be necessary with the diodes being fitted. They would have to be able to switch on and off pretty smartly at the required voltage which at a very uneducated guess may be in the order of 500 volts.

Just an opinion.
Cheers