Obi-Wan transistors

[v312]

I might try tomorrow. I don't have them permanently attached to the clamp yet, so that angle will be little tricky. I've always assumed from this exact picture that the one without the washer is to-5 and the one with the washer is either to-5 if it goes through the washer, or to-39 if it sits on the washer. Although from the other picture I'm pretty convinced it goes through the washer.
But either way, if that's the brand I'm sure sooner or later someone will dig out the exact ones from an old tv or radio or some other piece of gear

 

[scarf man]

Anything side on would be helpful. On a clamp would be ideal for scaling.
As to weather or not it’s through the washer, it’s pretty clear to me from looking at the pics that it’s through the washer. Let’s not forget that there were two washers present on the saber in Tunisia, and one likely fell off, so I would doubt there being two different sized cans with one sitting atop the washer.

 

[v312]

Left to right: TO-5 (Motorola), Marconi DAT11, TO-39

 

[thd9791]

That's positive to see too - I was stuck on operational amplifiers because the TO-5 cans were too tall

If it means anything, I've seen relays in almost identical cans too. whatever the code really is, we've got a lot of hunting to do

 

[ssdesigner]

That's positive to see too - I was stuck on operational amplifiers because the TO-5 cans were too tall

If it means anything, I've seen relays in almost identical cans too. whatever the code really is, we've got a lot of hunting to do

 

[v312]

Interesting, what are people actually using for accuracy on their builds today if to-5 is considered too tall?
Certainly to-39 is too small to be accurate. I must admit never really looked into this saber before I got a romans replica as a gift few weeks ago and didn't like the included fake transistors and washers. I was actually looking for to-39 when I found the marconis as the romans was setup like that. But later when I checked the available pictures in the forum I realized romans setup is wrong and the cans must be little bigger and go through the washer.

 

[cdyoung]

I found this thread very helpful to see different transistors/op amps and washer setups.

"MA" transistor markings for ANH Obi Wan Kenobi's Llightsaber

I've been asked a couple of times to re-post my explanation of the markings on the transistors used as "buttons" on the ANH OWK lightsaber. FWIW- here's my post from April 2006: As I’ve mentioned, I’m an electrical engineer and I’ve been specifying semiconductors (transistors) since 1980. I...

www.therpf.com

 

[cdyoung]

Since we're on the topic of another model of transistors (these with 10 pins), I thought it would also be helpful to cover the different methods of attaching transistors/op amps to the Graflex clamp. A great thanks to the following members for posting several tutorials, WIP photos, and assembly methods.

Transistors/op amps with a socket screw.
Courtesy of ATL Kenobi and James Kenobi 1138 for this tutorial:

Modifying transistors for ANH OBI sabers

First, find a pair of TO-5 or TO-39 case transistors (Fry's, eBay, etc.) Cut off the legs and file the bottom flush. The really hard part is finding an easy way to hold the transistor tight enough to drill without smashing it. I found a small piece of angle aluminum with 1/4" thick 1"...

www.therpf.com

Courtesy of thd9791 for this tutorial:

Tom's Tunisia Saber

I wanted to start a new thread for this. Given the limited tools I have, and money, scratchbuilding this saber was a fool's dream. ( I'd need a bit of luck, a bit more talent and such) So I did end up going the replica part route. Today I finished the transistors. It took a couple days, some...

www.therpf.com

Courtesy of The Ninja and Seneca for these WIP photos:


Transistors/op amps with an electrical wire cap/wire nut courtesy of Edraven99.


I used the simple method of bending the transistor/op amp pins inside the clamp, similar to a paper fastener or envelope clasp. Originally, these were eight pin op amps. Unfortunately, the clamp opening was too small to accommodate all eight pins plus the white ceramic core. So, I removed four of the eight pins, making sure the four pins that remained were aligned properly at the corners of the clamp opening. The op amps are very secure on the clamp using this method as well, and did not damage or scratch the inside of the clamp whatsoever.

 

[Jediseth]

Nice work, I think you got it figured out.

 

[v312]

Ok, here it is compared to that picture... I guess neither the angle, distance or the focal length is exactly the same, but as far as I can tell looking at the real thing - size and shape both match.

 

[cdyoung]

Great photo comparison. Thank you for sharing.

 

[thd9791]

Yes this is great! So you said some newer ones used the MA codes? So neat!

 

[corliss1]

They certainly must exist, but I haven't been able to find another variant just yet. SO CLOSE

 

[v312]

Yes, I've found some datasheets for Marconi devices that starts with MA like this one MA818 datasheet
But nothing that's in a metal can or from the correct period.

 

[DannyP91]

I have a bunch of these versions! Struggling to find the ME version and with the different serial number!

 

[parfaitelumiere]

huge news about obiwan lightsaber parts!
The only lightsaber I keep, so..
I got a set of marconi elliot TO5, of course!

 

[corliss1]

parfaitelumiere - are yours different than the "DAT11" ones we're able to find right now?

 

[parfaitelumiere]

same

 

[v312]

The MA transistors you are looking for:

There are more in the series, but I don't think it can be identified from the chronicles picture what exact numbers were on the saber. So for me either will do ... now I just need someone from UK to ship me a pair

 

[corliss1]

Exactly I don't think we're ever going to know for sure the exact part, but anything with the "MA" would make me happy. I haven't found any specific ones for sale though.