Hi all. i am a relatively newcomer to the world of electronics and i am trying to find info on a voltage indicator that measures from 150v to 300 v
i came across a circuit by extensive googling that measures 400v (see attached image) but my lack of knowledge means i cannot get my head around how to convert this to fit into my requirements. i have found a calculator on this forum, but cannot understand it at all
any help would be greatly appreciated
Sarah **broken link removed**
yes, i found a small program online that works out the values for a voltage divider . 10 leds will be more than sufficient. i require an indicator of voltage rather than an exact measurement.
Valve (tube) applications such as TV's radios etc. Photomultiplier tubes. Electron microscopes. Sputtering systems. RF transmitters. Residual gas analyzers. High/Ultra High Vacuum gauges Stuff, I'm intimately familiar with.