Thread: Zx81
View Single Post
Old 9th Mar 2020, 8:54 pm   #4
Paul Stenning
Administrator
 
Paul Stenning's Avatar
 
Join Date: Dec 2002
Location: Cardiff
Posts: 8,361
Default Re: Zx81

Fortunately the PSUs come apart easily, four screws under the self adhesive feet. Unregulated linear supply with, from memory, a 2200uF and a 1000uF capacitor in parallel. Regulation is by the 5V linear regulator inside the ZX81. You could perhaps try a different PSU as long as it's around the same voltage and high enough current.
__________________

Paul Stenning
Forum Admin/Owner and BVWS Committee Member
Paul Stenning is offline