Sinclair ZX80 / ZX81 / Z88 Forums

Martin: That is an expected value. Your multimeter is a True RMS or RMS type and the clock signal is a square with 50% duty cycle. So, 2.27Vrms = 3.2Vp-p/sqrt(2). You can try with any NPN type transistor from your list but bear in mind that the ZTX313 is a switching transistor but most units on your...

Hi Martin,

I've attached some graphs taken from a health Zeddy. I hope they would help.

Yes, it can play any ".p" and ".o" files for more than a year (since F/W 1.3).

Yes it is and is called TZXDuino

WOW! This set is awesome

mrtinb wrote: ↑Sat Jul 21, 2018 12:16 pm

Wow! Where can I find this demo/software?

What have you done?!

Very interesting. Thanks for sharing.

well done, well done

This time I was quick and bought 2 units LOL