Steve Anderson wrote:Harry, if you're using the same type of CRTs as before (and two of them) why not use exactly the same power and deflection arrangement as before. It worked, why go through all this again?...unless I've missed something...there is only so many ways this can be done....a bit like skinning a cat....
Steve A.
Hi Steve
I want the circuit to your design Steve as is and same sort idea 2 CRT of the same type as last time but for a different use ...all i am doing here different as a challenge is to use this Nice Transformer, its only down side is it has a higher voltage than i am used to ... i am a curious bugger .
Just trying to match the voltages to the 3BP1 design ,i also have another and this will come in handy to learn how to do this ...there's lots on how to bring a voltage up not so easy to bring it down ...i find it interesting and challenging....and i have never tried this before well sort of as i did use the dropping of the high Negative on The Binocular project but via your multiplier chain perhaps not elegant but it worked
I could just as you think cable a standard known AC voltage in but i want it a stand alone unit and i like making things from scratch so a few reasons ...easiest way is not one of them !
If the Transformer was similar to the last a 3 wire i would keep the AC DC side of it to how we did it before but i was thinking due to the voltage size a simple voltage double circuit would be ok this time ..well least that was my thinking use some thing that would work with this transformer , your HV negative supply circuit is more a multi stage multiplier i am not sure and i should of asked how it would of coped with Ac voltages like this .Any case the Negative supply works as is now ,just trying to work out the positive side needed for powering the anode and deflection amplifiers .
I have a fair few CRts very lucky to have them ! getting most of the 3BP1's out of the way in projects like this and the latest ,i would hate it getting to the end of my life and know i never used them ..so that's another reason , just i enjoy using them and i love CRT's ,very much so the electrostatic deflected type ...for me its just fun to come up with idea for them .