So with trepidation I install one of my precious 2518 line register ICs. I have several of them, all dated to 1973. I got very […]
Category: TV Typewriter Redux
Time for some characters!
Alright! In my last post, I finally got my TV Typewriter to actually display something onscreen! It wasn’t much, but seeing 16 rows of 32 […]
Timing & Memory Board Test
Having successfully gotten (I think) a tune into the TV using the TVT’s sketchy RF modulator, the next stage is to put some actual integrated […]
RF modulator build and test
After successfully testing the power supply on my TVT’s mainboard, I now need to move on to actually making the TVT do something. The next […]
Firing up the mainframe!
Okay so now comes the scary part. The TV Typewriter has its own built in DC power supply, connected to the wall by a line […]
Building a TVT sandwich (again)!
Following the instructions of the TV Typewriter construction guide, the first thing to do after recreating my TVT boards (again and again) is to drill […]
I redid the boards. And then redid them again. And again…
Okay, so when we last left off, I had discovered an unfortunate mistake in the original PCBs I had recreated for my TV Typewriter project: […]
Printing Silkscreen Layer with Ghost White Toner!
Well it finally arrived: As you know, printers do not print white typically, they work subtractively and simply don’t put toner where white is required. […]
Nearing completion
This week I put in my order to Signal Tranformer for a new 24-1A transformer. Believe it or not, despite the passage of 40 years, […]
Assembling the case
The final pieces are on order and now I’m moving to assembling the TVT’s case. For trial purposes, I built the first case out of […]