TRS-80 Model 12 crt substitution

From: Tony Duell <>
Date: Thu Mar 4 23:20:05 2004

> So I can make a discharger with some resistors and a bit of plastic? Sounds

Yes. There was a design for an EHT probe like this in 'Television'
magazine a few years back. These EHT probes as just a high-value resistor
(a few hundred megohms) and a microammeter in series.

The main problem is keping the resistors well enough insulated. Remmeber
it has to stand 30kV or so.

> very Blue Peter (UK kids after-school TV show) :o) What's the best way of

There is nothing wrong with home-made stuff!

Received on Thu Mar 04 2004 - 23:20:05 GMT

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:37:03 BST