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  • Super conducting diodes?

    From Jan Panteltje@21:1/5 to All on Tue Oct 3 04:41:28 2023
    Examining the superconducting diode effect
    https://www.sciencedaily.com/releases/2023/10/231002124407.htm
    A collaboration of FLEET researchers from the University of Wollongong and Monash University
    have reviewed the superconducting diode effect, one of the most fascinating
    phenomena recently discovered in quantum condensed-matter physics.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From John Larkin@21:1/5 to All on Tue Oct 3 05:40:06 2023
    On Tue, 03 Oct 2023 04:41:28 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    Examining the superconducting diode effect
    https://www.sciencedaily.com/releases/2023/10/231002124407.htm
    A collaboration of FLEET researchers from the University of Wollongong and Monash University
    have reviewed the superconducting diode effect, one of the most fascinating
    phenomena recently discovered in quantum condensed-matter physics.

    Low-noise diode-bridge mixer?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jan Panteltje@21:1/5 to jl@997arbor.com on Tue Oct 3 15:16:39 2023
    On a sunny day (Tue, 03 Oct 2023 05:40:06 -0700) it happened John Larkin <jl@997arbor.com> wrote in <cs2ohit552f5se6anim5i01r738evdhdpj@4ax.com>:

    On Tue, 03 Oct 2023 04:41:28 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    Examining the superconducting diode effect
    https://www.sciencedaily.com/releases/2023/10/231002124407.htm
    A collaboration of FLEET researchers from the University of Wollongong and Monash University
    have reviewed the superconducting diode effect, one of the most fascinating >> phenomena recently discovered in quantum condensed-matter physics.

    Low-noise diode-bridge mixer?

    Dunno, but very high currenr rectifiers?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From John Larkin@21:1/5 to All on Tue Oct 3 09:01:30 2023
    On Tue, 03 Oct 2023 15:16:39 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    On a sunny day (Tue, 03 Oct 2023 05:40:06 -0700) it happened John Larkin ><jl@997arbor.com> wrote in <cs2ohit552f5se6anim5i01r738evdhdpj@4ax.com>:

    On Tue, 03 Oct 2023 04:41:28 GMT, Jan Panteltje <alien@comet.invalid> >>wrote:

    Examining the superconducting diode effect
    https://www.sciencedaily.com/releases/2023/10/231002124407.htm
    A collaboration of FLEET researchers from the University of Wollongong and Monash University
    have reviewed the superconducting diode effect, one of the most fascinating
    phenomena recently discovered in quantum condensed-matter physics.

    Low-noise diode-bridge mixer?

    Dunno, but very high currenr rectifiers?

    I'd guess the diodes work at millivolts and milliamps.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From whit3rd@21:1/5 to John Larkin on Tue Oct 3 09:34:47 2023
    On Tuesday, October 3, 2023 at 5:40:26 AM UTC-7, John Larkin wrote:
    On Tue, 03 Oct 2023 04:41:28 GMT, Jan Panteltje <al...@comet.invalid>
    wrote:
    Examining the superconducting diode effect
    https://www.sciencedaily.com/releases/2023/10/231002124407.htm

    Low-noise diode-bridge mixer?

    Yeah, maybe, but the effect is to go from superconducting to plain old
    metallic conducting, not 'switch off'; that means the impedance of the mixer
    is milliohm-or-less.

    Got any good 0.005 ohm transmission line designs?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Tabby@21:1/5 to All on Tue Oct 3 17:06:26 2023
    On Tuesday, 3 October 2023 at 17:34:52 UTC+1, whit3rd wrote:
    On Tuesday, October 3, 2023 at 5:40:26 AM UTC-7, John Larkin wrote:
    On Tue, 03 Oct 2023 04:41:28 GMT, Jan Panteltje <al...@comet.invalid> wrote:
    Examining the superconducting diode effect
    https://www.sciencedaily.com/releases/2023/10/231002124407.htm
    Low-noise diode-bridge mixer?

    Yeah, maybe, but the effect is to go from superconducting to plain old metallic conducting, not 'switch off'; that means the impedance of the mixer is milliohm-or-less.

    Got any good 0.005 ohm transmission line designs?

    Yeah, bit hard to get it through the door tho. Tracks are kinda wide.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jan Panteltje@21:1/5 to jl@997arbor.com on Wed Oct 4 05:28:41 2023
    On a sunny day (Tue, 03 Oct 2023 09:01:30 -0700) it happened John Larkin <jl@997arbor.com> wrote in <gleohip8is9l1afcs9tup15m88rrdjvu2n@4ax.com>:

    On Tue, 03 Oct 2023 15:16:39 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    On a sunny day (Tue, 03 Oct 2023 05:40:06 -0700) it happened John Larkin >><jl@997arbor.com> wrote in <cs2ohit552f5se6anim5i01r738evdhdpj@4ax.com>:

    On Tue, 03 Oct 2023 04:41:28 GMT, Jan Panteltje <alien@comet.invalid> >>>wrote:

    Examining the superconducting diode effect
    https://www.sciencedaily.com/releases/2023/10/231002124407.htm
    A collaboration of FLEET researchers from the University of Wollongong and Monash University
    have reviewed the superconducting diode effect, one of the most fascinating
    phenomena recently discovered in quantum condensed-matter physics.

    Low-noise diode-bridge mixer?

    Dunno, but very high currenr rectifiers?

    I'd guess the diodes work at millivolts and milliamps.

    If superconducting it should work at much lower voltages, mayve microvolts? Could perhaps be used for power generation from small temperature variatios,
    I like the thermocouple high voltage generator, like this:
    https://panteltje.nl/pub/lighting_a_LED_with_a_candle_setup_IMG_3607.GIF
    https://panteltje.nl/pub/lighting_a_LED_with_a_candle_circuit_diagram_with_added_power_MOSFET.gif

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Anthony William Sloman@21:1/5 to Tabby on Wed Oct 4 20:55:47 2023
    On Wednesday, October 4, 2023 at 11:06:31 AM UTC+11, Tabby wrote:
    On Tuesday, 3 October 2023 at 17:34:52 UTC+1, whit3rd wrote:
    On Tuesday, October 3, 2023 at 5:40:26 AM UTC-7, John Larkin wrote:
    On Tue, 03 Oct 2023 04:41:28 GMT, Jan Panteltje <al...@comet.invalid> wrote:
    Examining the superconducting diode effect
    https://www.sciencedaily.com/releases/2023/10/231002124407.htm
    Low-noise diode-bridge mixer?

    Yeah, maybe, but the effect is to go from superconducting to plain old metallic conducting, not 'switch off'; that means the impedance of the mixer
    is milliohm-or-less.

    Got any good 0.005 ohm transmission line designs?

    Yeah, bit hard to get it through the door tho. Tracks are kinda wide.

    Tabby seems to have been using a one of the simple formulae for calculating transmission line impedance that you find in ECL application notes. They lose accuracy outside the range 50R to 75R.

    The proper calculations are rather more complicated. and don't seem to offer 5mR transmission lines.

    https://avtechpulse.com/catalog/page_new_av-clz_rev7.pdf

    offers a 1R line, but seems to get it by paralleling a lot 5OR cables.

    --
    Bill Sloman, Sydney

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)