Search found 5123 matches
- Sat Nov 12, 2011 11:07 pm
- Forum: SALES
- Topic: ZX81 extender board for development
- Replies: 42
- Views: 22912
Re: ZX81 extender board for development
Now I ordered only Prototype version with 5 pieces, resulting price will be GBP 7,00 plus GBP 2,00 postage for an envelope. FIFO order service - first in, first out. Should be delivered this month as promised. Now I found a producer in China for smaller series and I could do a smaller series which ...
- Wed Nov 09, 2011 10:30 pm
- Forum: SALES
- Topic: More ZXpands / ZXpand-AY Modules
- Replies: 3
- Views: 3720
Re: More ZXpands / ZXpand-AY Modules
Selling like hotcakes...
Three ZXpands sold today
Mark
Three ZXpands sold today
Mark
- Tue Nov 08, 2011 6:27 pm
- Forum: Development
- Topic: ULA revistited.
- Replies: 168
- Views: 133529
Re: ULA revistited.
Great pictures Andy
It looks so much better in its home environment next to a Z80 on a Zeddy PCB
Mark
It looks so much better in its home environment next to a Z80 on a Zeddy PCB
Mark
- Mon Nov 07, 2011 11:21 am
- Forum: Hardware
- Topic: Times Sinclair 1500 video out
- Replies: 44
- Views: 27386
Re: Times Sinclair 1500 video out
Some transistor information TO-92 BC547, BC548, BC549 pinout.jpg Pinout for 2N3904 here: http://www.reprise.com/host/circuits/transistor_pinouts.asp Notice that the pinouts are not the same, but both will fit in the same holes on a circuit board 8-) Other transistor pinouts: http://hamradio.lakki.ik...
- Sat Nov 05, 2011 11:59 pm
- Forum: Hardware
- Topic: Times Sinclair 1500 video out
- Replies: 44
- Views: 27386
Re: Times Sinclair 1500 video out
Possible transistors include
BC547B, BC547C
BC548B, BC548C
BC549B, BC549C
2N3904 should also be okay ( a very common transistor) and even available from http://www.radioshack.com (as well as many other suppliers)
http://www.digikey.com stock a good range
Mark
BC547B, BC547C
BC548B, BC548C
BC549B, BC549C
2N3904 should also be okay ( a very common transistor) and even available from http://www.radioshack.com (as well as many other suppliers)
http://www.digikey.com stock a good range
Mark
- Sat Nov 05, 2011 10:02 pm
- Forum: SALES
- Topic: ZX81 extender board for development
- Replies: 42
- Views: 22912
Re: ZX81 extender board for development
I understand the problem, the only thing I can suggest, is the boards being sold in packs of 5 or packs of 10. If they are put on http://www.sellmyretro.com/ by Rich that will go a long way to helping with the problem. Myself, I would be interested in buying 5, but am not sure I would find a use for...
- Sat Nov 05, 2011 9:14 pm
- Forum: Hardware
- Topic: Times Sinclair 1500 video out
- Replies: 44
- Views: 27386
Re: Times Sinclair 1500 video out
Bill, whereabouts in the world are you? There are many silicon transistors (which are used as both signal amplifiers and digital electronic switches) that will do the job. NPN is a type of transistor (but not a part number), transistors are available in a number of different types. Why do I need to ...
- Sat Nov 05, 2011 7:36 pm
- Forum: Sinclair Misc
- Topic: Hello, time to introduce myself
- Replies: 6
- Views: 4460
Re: Hello, time to introduce myself
(is that why there are fireworks all over the sky tonight )
- Sat Nov 05, 2011 1:55 pm
- Forum: Sinclair Misc
- Topic: Hello, time to introduce myself
- Replies: 6
- Views: 4460
Hello, time to introduce myself
Hello all, Have been lurking for a little while having found this via the main RWAP site. Registered on this forum in late September (but does not feel like that long ago! :lol: ). I have been reading a lot of the older topics. It is such a shame that a lot of the images and other attachments do not...
- Sat Nov 05, 2011 1:25 pm
- Forum: Development
- Topic: ULA revistited.
- Replies: 168
- Views: 133529
Re: ULA revistited.
Very interesting!
And great work
I'll have one as well.
Mark
And great work
I'll have one as well.
Mark