HV- voltage multiplier circuit confirmation needed

[Steven Dufresne]

An now I have the dual output PSU done too! Actually, three possible outputs at the same time, HV+ relative to ground, HV- relative to ground and ground itself. Amazingly I had all the parts I needed so it took me just one day to do and test. It was simply making a dual board circuit with a negative output multiplier and a positive output multiplier in parallel. The measured lowest potential difference was 2.84kV. I didn't test for highest since 2.8kV is about what I need. Construction, testing and some safety details at:
http://rimstar.org/equip/pos_neg_voltage_multiplier.htm
Next, to refurbish my Hyde generator and retest.
-Steve
http://rimstar.org   http://wsminfo.org

[gsmsslsb]

Hello guys
I am making a cockroft walton multiplier and I want to be able to flip it round for either positive earth or negative earth. Please take a look at the attached drawing.
I want to power from either X or Y.
Will it work as shown or do I ned to modify the plan.
Thanks gsm

[the_big_m_in_ok]

Hello guys
I am making a cockroft walton multiplier and I want to be able to flip it round for either positive earth or negative earth. Please take a look at the attached drawing.
I want to power from either X or Y.
Will it work as shown or do I ned to modify the plan.
Thanks gsm

All your diodes are inherently polarized in one direction.  You can't apply a reverse signal to a diode and expect it to work.  It'll block reverse-going voltage and current.

However, if you wire two diodes together on one end with polarities reversed, the other end of each would have DC as a separate pulse oppositely, whereas each can be filtered distinctly by a capacitor to give two opposite DC signals at once.  A switch can allow you to choose the one you want.
                -----|<----Pulsating DC one way
               /
A/C in ___/                                               
              \
               \
                ----->|----Pulsating DC the other way

This works fine as an electrolysis arrangement.  Now, building a Cockroft voltage ladder according to the diagram above is something I haven't got the time to think about right now.

This library is closing.  Got to go.

--Lee

[Steven Dufresne]

Hi @gsmsslsb,
You could do like I did in Reply #10 above and put two multiplier circuits in one tube. This gives three terminals: HV+, ground, HV-. But you don't have to use all three terminals at any one time. So you can do: HV+ with ground, HV- with ground, or HV+ with HV-.

EDIT: Actually, a fourth option would be to use all three terminals at the same time.
-Steve
http://rimstar.org   http://wsminfo.org

[the_big_m_in_ok]

Hi @gsmsslsb,
You could do like I did in Reply #10 above and put two multiplier circuits in one tube. This gives three terminals: HV+, ground, HV-. But you don't have to use all three terminals at any one time. So you can do: HV+ with ground, HV- with ground, or HV+ with HV-.
-Steve
http://rimstar.org   http://wsminfo.org

@gsmsslsb
Steven Dufresne is correct.  I hadn't thought of that immediately.  When AC is your source, you might switch between one of the three multipliers he suggested.

--Lee