Hello Hobbyists and Enthusiasts,
I am looking for data on an old transistor type OC940. I think it is made by Philips.
I had a search around the web with no luck, perhaps some of you may have some old transistor Data books from the 60's and 70s.
I know it is a high voltage transistor but I was just wondering if there was anything special about it having low inter-electrode capcitance or anything like that. This OC940 is Q9 in an old BWD 502 oscilloscope.
The mention of the giveaway BWD 502 upthread has re-kindled my interest to try and get it working properly for my friend since he has thrown some time and money at it. I spoke to McVan instruments but no luck there.
While speaking to a very helpful chap at McVan, I mentioned a missing switch on the trigger pot that is different from the schematic I have and the unit. He explained the pot was dismantled by BWD, a drop of arldite was then placed at the end of the pot track to lift the wiper and act as a switch. How is that for tricky! Heh heh heh.... I would never had known!
There is no urgency here, just nice to get an old CRO working a bit better than it is at present. Thanking you in advance.
Regards, John Crighton Hornsby