I am about to make my dream of a selfmade scope come true and go to collect my findings, ideas and testresults here:
*Sawtooth generator driven with a microcontroller or similar
Nah, it will be a classic anyway µC isn’t fast enough
*Cockcroft–Walton generator to make the needed -2000VDC (Kathode) and 200VDC (Plates)
Proven to work
*Input amp somehow Voltage protected
*Avoid rotary switches
There’ll be one!
*find out if DC heater voltage has negative side effects
Nope – works fine!
TheDevil639 on youtbe kindly sent me a schematic for a heater slowstarter (find it
here). I think that I will build this up first and test the tune with a proto-psu.
First proto-build up has proven unsuitable so far, I will have to modify the circuit more or less to get my desired results.
-X mV to X V
-Heater 6,3 V / 600 mA
-HV (1700 – 2700 V)
-Logic Levels 5V
The Videos so far:
AE EP#20 Industrial Controller Teardown & Homebrew Scope Ideas
AE EP#29 Oscilloscope Project: The heat is on!