3 ms·I wonder how it was shielded to prevent spurious signals from being injected.by ratsmack 6y agoI wonder how it was shielded to prevent spurious signals from being injected.kens 6y agoI don't think there was any shielding. The magnetic fields were localized enough (probably restricted to each transformer's core) to avoid problems.mjevans 6y agoProbably it wasn't; just a very strong flow of electrons and very wide gap between off and on.