@eln70.bsky.social
The original was unregulated (mine was almost 14V) causing a lot of heat dissipation in the poor 7805 so a good regulated supply with a stable 9V output would be better than the original.
December 19, 2025 at 7:42 PM
The original was unregulated (mine was almost 14V) causing a lot of heat dissipation in the poor 7805 so a good regulated supply with a stable 9V output would be better than the original.
Tip positive, yes.
zuzebox.wordpress.com/2023/04/30/b...
zuzebox.wordpress.com/2023/04/30/b...
Building a Sinclair ZX81 PSU Lead
I had a ZX81 to test but no power supply or leads for it. So here some information on ZX81 power supplys and building a DIY power lead for the ZX81. There were two ZX81 power supplies. The first wa…
zuzebox.wordpress.com
December 19, 2025 at 7:36 PM
Tip positive, yes.
zuzebox.wordpress.com/2023/04/30/b...
zuzebox.wordpress.com/2023/04/30/b...
Sorry. I thought it was AC but it's DC.
Let me find the polarity.
There's a 7805 with a small metal (aluminium) plate IIRC. (Built mine as a kit because it was SEK100 cheaper)
Let me find the polarity.
There's a 7805 with a small metal (aluminium) plate IIRC. (Built mine as a kit because it was SEK100 cheaper)
December 19, 2025 at 7:35 PM
Sorry. I thought it was AC but it's DC.
Let me find the polarity.
There's a 7805 with a small metal (aluminium) plate IIRC. (Built mine as a kit because it was SEK100 cheaper)
Let me find the polarity.
There's a 7805 with a small metal (aluminium) plate IIRC. (Built mine as a kit because it was SEK100 cheaper)
If it's the same specs as for the EU version, it's 9VAC 1.5A regulated
December 19, 2025 at 6:49 PM
If it's the same specs as for the EU version, it's 9VAC 1.5A regulated
They're absolutely right. It should be the Trump center and nothing else!
December 19, 2025 at 12:05 AM
They're absolutely right. It should be the Trump center and nothing else!
Why not go all the way and just rename it the Trump center?
December 19, 2025 at 12:03 AM
Why not go all the way and just rename it the Trump center?
Yes! It's time for all scientists to leave the US! Make Idiocracy a documentary!
December 19, 2025 at 12:01 AM
Yes! It's time for all scientists to leave the US! Make Idiocracy a documentary!
You don't want to be a part of Europe so why join Erasmus again? Stay on your island for good this time!
December 19, 2025 at 12:00 AM
You don't want to be a part of Europe so why join Erasmus again? Stay on your island for good this time!
Yes! Oh man! The dual 133 is the dream boat. That's so cool!
December 18, 2025 at 11:52 PM
Yes! Oh man! The dual 133 is the dream boat. That's so cool!
Nice, but it's no dual PPC like the original
December 18, 2025 at 10:48 PM
Nice, but it's no dual PPC like the original
Get him a hypodermic and sedate him FFS!!
December 18, 2025 at 10:29 PM
Get him a hypodermic and sedate him FFS!!
Yes! No matter the creed or conviction.
December 18, 2025 at 9:56 PM
Yes! No matter the creed or conviction.
Sweet! I could only afford the ZX81 as a kid but the spectrum was my dream computer
December 18, 2025 at 9:53 PM
Sweet! I could only afford the ZX81 as a kid but the spectrum was my dream computer
Couldn't agree more.
This is one of my favorites:
I had a dream of a winter garden
A midnight rendezvous
Silver, blue and frozen silence
What a fool I was for you
This is one of my favorites:
I had a dream of a winter garden
A midnight rendezvous
Silver, blue and frozen silence
What a fool I was for you
December 17, 2025 at 11:13 AM
Couldn't agree more.
This is one of my favorites:
I had a dream of a winter garden
A midnight rendezvous
Silver, blue and frozen silence
What a fool I was for you
This is one of my favorites:
I had a dream of a winter garden
A midnight rendezvous
Silver, blue and frozen silence
What a fool I was for you
Love those lyrics! Genius!
December 17, 2025 at 11:01 AM
Love those lyrics! Genius!
Mark Kelly for president!
December 15, 2025 at 8:02 AM
Mark Kelly for president!
Because artists are people.
December 12, 2025 at 12:21 AM
Because artists are people.
That navel though...Rrrrrr! 😁
December 11, 2025 at 11:58 PM
That navel though...Rrrrrr! 😁
The US only wants a union with Russia, North Korea and other totalitarian states. It is no longer an ally of the free world.
December 11, 2025 at 11:57 PM
The US only wants a union with Russia, North Korea and other totalitarian states. It is no longer an ally of the free world.
Europeans, all 400+ millions of us must prepare to give our ultimate sacrifice to destroy Russia once and for all. It's the only language they understand. Death to Russia!
December 11, 2025 at 11:21 PM
Europeans, all 400+ millions of us must prepare to give our ultimate sacrifice to destroy Russia once and for all. It's the only language they understand. Death to Russia!
Thank you Bennie!
December 11, 2025 at 10:21 PM
Thank you Bennie!