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Thread: Inductors

  1. #21
    Join Date: Mar 2017

    Location: Liverpool

    Posts: 401
    I'm Sandro.

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    Use just normal Wire the coil is just there to stop oscillation and I never seen 2 of Simon coil that are the same they seem to get longer and whit more turns as time got by
    Not criticising that is the way it is and if it works it works and I am sure Simon Know when it does and by the way yes I must confess and came out of the closet I had a look a lot of them that is just HiFi porn

    but if you insist gogle up Advent materials the got it all. (well almost all one can imaging apart from copper plated silver but if one ask for it... I have used the insulated silver wire to make interconnects in the past There is no much current going trough that coil and the resistance is negligible the only thing is thick wire keep it's shape

  2. #22
    Join Date: Sep 2013

    Location: North Island New Zealand

    Posts: 1,366
    I'm Chris.

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    Quote Originally Posted by Bksabath View Post
    Use just normal Wire the coil is just there to stop oscillation and I never seen 2 of Simon coil that are the same they seem to get longer and whit more turns as time got by
    Not criticising that is the way it is and if it works it works and I am sure Simon Know when it does and by the way yes I must confess and came out of the closet I had a look a lot of them that is just HiFi porn

    but if you insist gogle up Advent materials the got it all. (well almost all one can imaging apart from copper plated silver but if one ask for it... I have used the insulated silver wire to make interconnects in the past There is no much current going trough that coil and the resistance is negligible the only thing is thick wire keep it's shape
    Inductors are usually used to control current in a circuit. Oscillation is a manifestation of applying positive feedback. Whilst inductors are found in oscillator circuits
    their purpose is multifold, but includes as oscillators in RF circuitry, combining with relatively small values of capacitance to form what is called a tank circuit.
    A tank circuit though is not stable enough to maintain frequency without added components - it works, but it also drifts up and down with temperature.

    Up to 15 Mhz inductors can be wound on toroids - which begs the question ( there's always a question ) why air Cored inductors are preferred in
    speaker crossovers. It may suggest a return to toroid inductors for crossovers rather than barrel types, and care with adjacent components given
    that inductors create a magnetic field.

    Audio frequency circuits using inductance are more likely to be combining inductance with capacitance for power supply filtering. The power supplies seen in the
    Quad 2 valve amp, as example relied heavily on inductance. This was tied to the fact that capacitors were not available then with large amounts of storage.

    The inductor remains a valuable component in audio purpose circuits to control current.

  3. #23
    Join Date: Mar 2017

    Location: Liverpool

    Posts: 401
    I'm Sandro.

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    Maybe it would help if same one could post a SCH of the Calvin Buffer I have been looking for it but I have to much staff in the puter to be able to find it.
    Below is a link to the Silver PTFE insulated wire Price is quite interesting if one get the 50 meters
    https://www.advent-rm.com/catalogue/...d-wire/AG5500/

  4. #24
    Join Date: Mar 2017

    Location: Liverpool

    Posts: 401
    I'm Sandro.

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    There was a few days ago a listing on Ebay for same surplus silver wire 0.40mm and it was sold by the meter whit a cotton braid over it as is not insulated By the same dude that make those

    https://gekkocables.com/products/silver%20lining.html

    That listing is not there anymore, probably because I got the last 10 meters of it but it may came up again
    Is the one in Advent as posted what you are looking for ?

    would 0.4 uninsulated do you maybe whit a silicon tube or heat shrink sleeve over it ?
    maybe in this case you can get one of the Gekko cables and chop a bit of it

    look for audiosopuk (seller name) or Gekko interconnect on Ebay

  5. #25
    Join Date: Nov 2010

    Location: Yorkshire

    Posts: 7,882
    I'm AnDreW.

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    Thanks for the heads up Sandro.
    SS

    CD Teac VRDS25X(Audiotuned) DAC Caiman SEG+15V PSU+Dorado DECK 1210 Mat SPH SSS Mods MN Base/Bearing/Platter+Ebony armboard Feet Isonoe/Ebony PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/3 Stage Regs/Recap PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10

    VALVE

    PRE
    Croft Epoch(Modified) AMP Sondex S100 (Modified) SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Reference XO DECKS Garrard301/401 (Bastin) Mat Teunto Bearing 401 Plinth Moldovan Arms 3009/3012(Ikeda Ag wired) PSU Eagle+Tachometer MC Ag Meister v2 / Royall N SPU's CABLES Arm Yannis 420.5 Litz+ Speaker 10mm Cu + WBT-0681 Ag IC Oyaide FTVS-510 AgWBT 0110Ag Phonostage Paradise(4 Box Modded) / EAR 834 Clone (modded)

    REAL SOUND


    PRE Radford SC25 (Mullard ECC83/82) POWER RADFORD STA25 Renaissance (Electroharmonix EL34) SPEAKERS Celestion Ditton 15 (Duelund Rewired/Jantzen Recapped) CABLES Speaker - Duelund AWG 12IC - Belden 8402+Switchcraft RCA

    WEBSITE - WWW.FACEBOOK.COM/WAKEFIELDAUDIO

  6. #26
    Join Date: Aug 2012

    Location: Hartlepool UK

    Posts: 1,470
    I'm Alan.

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    The inductor is L1 in the calvin buffer and its value is stated as 10uH (10 turns)
    The current draw of the Calvin is only 30ma
    The inductor is in parallel with the output resistor R14 27 ohm (Zobel)
    Manual is here https://www.diyaudio.com/forums/grou...-paradise.html

    Alan
    Last edited by 337alant; 23-06-2019 at 19:30.
    Turntable - Garrard 401/Jelco 750L/Ortofon Kontrapunkt B, Pioneer PLC 590, SME 3009/2 , Denon DL103R - DIY Paradise Phono stage - Reel 2 Reel Studer A810, Otari MX55,Tascam BR20 - Digital HTPC / Young Dac - Preamp - DIY B4, 821, Power Amp's DIY Voyager Mono Block, Speakers Tannoy precision 6.4 / Wilmslow Kit Volt BM220.8 / Scanspeak D2905/9500

  7. #27
    Join Date: Jan 2009

    Location: Sheffield - UK

    Posts: 6,589
    I'm Mark.

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    @AnDreW, I suspect that, on the whole, you regret ever asking this question now.... .. .

    100% Analogue

  8. #28
    Join Date: Nov 2010

    Location: Yorkshire

    Posts: 7,882
    I'm AnDreW.

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    Quote Originally Posted by 337alant View Post
    The inductor is L1 in the calvin buffer and its value is stated as 10uH (10 turns)
    The current draw of the Calvin is only 30ma
    The inductor is in parallel with the output resistor R14 27 ohm (Zobel)
    Manual is here https://www.diyaudio.com/forums/grou...-paradise.html

    Alan
    Alan, thanks for the post. Might as well be in Mandarin (no insult intended). Is it possible to have a version those of us that are a bit thick in this subject??????
    SS

    CD Teac VRDS25X(Audiotuned) DAC Caiman SEG+15V PSU+Dorado DECK 1210 Mat SPH SSS Mods MN Base/Bearing/Platter+Ebony armboard Feet Isonoe/Ebony PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/3 Stage Regs/Recap PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10

    VALVE

    PRE
    Croft Epoch(Modified) AMP Sondex S100 (Modified) SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Reference XO DECKS Garrard301/401 (Bastin) Mat Teunto Bearing 401 Plinth Moldovan Arms 3009/3012(Ikeda Ag wired) PSU Eagle+Tachometer MC Ag Meister v2 / Royall N SPU's CABLES Arm Yannis 420.5 Litz+ Speaker 10mm Cu + WBT-0681 Ag IC Oyaide FTVS-510 AgWBT 0110Ag Phonostage Paradise(4 Box Modded) / EAR 834 Clone (modded)

    REAL SOUND


    PRE Radford SC25 (Mullard ECC83/82) POWER RADFORD STA25 Renaissance (Electroharmonix EL34) SPEAKERS Celestion Ditton 15 (Duelund Rewired/Jantzen Recapped) CABLES Speaker - Duelund AWG 12IC - Belden 8402+Switchcraft RCA

    WEBSITE - WWW.FACEBOOK.COM/WAKEFIELDAUDIO

  9. #29
    Join Date: Nov 2010

    Location: Yorkshire

    Posts: 7,882
    I'm AnDreW.

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    Quote Originally Posted by YNWaN View Post
    @AnDreW, I suspect that, on the whole, you regret ever asking this question now.... .. .
    Yep! My Paradise is out, waiting for Si to update with a raft of upgrades. Is he away! Also, what about the 3D printed covers that your offering, are they still available. Could you send me a PM?
    SS

    CD Teac VRDS25X(Audiotuned) DAC Caiman SEG+15V PSU+Dorado DECK 1210 Mat SPH SSS Mods MN Base/Bearing/Platter+Ebony armboard Feet Isonoe/Ebony PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/3 Stage Regs/Recap PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10

    VALVE

    PRE
    Croft Epoch(Modified) AMP Sondex S100 (Modified) SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Reference XO DECKS Garrard301/401 (Bastin) Mat Teunto Bearing 401 Plinth Moldovan Arms 3009/3012(Ikeda Ag wired) PSU Eagle+Tachometer MC Ag Meister v2 / Royall N SPU's CABLES Arm Yannis 420.5 Litz+ Speaker 10mm Cu + WBT-0681 Ag IC Oyaide FTVS-510 AgWBT 0110Ag Phonostage Paradise(4 Box Modded) / EAR 834 Clone (modded)

    REAL SOUND


    PRE Radford SC25 (Mullard ECC83/82) POWER RADFORD STA25 Renaissance (Electroharmonix EL34) SPEAKERS Celestion Ditton 15 (Duelund Rewired/Jantzen Recapped) CABLES Speaker - Duelund AWG 12IC - Belden 8402+Switchcraft RCA

    WEBSITE - WWW.FACEBOOK.COM/WAKEFIELDAUDIO

  10. #30
    Join Date: Aug 2012

    Location: Hartlepool UK

    Posts: 1,470
    I'm Alan.

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    Andy
    The ones that Si has made look like 19 turns arround a 7 or 8mm drill bit, why not just copy that, looks like 0.5mm wire as well ?
    Just stick the drill bit in a vice and start winding like this

    1.Winding on Drill Bit by Alan Towell, on Flickr

    Alan
    Turntable - Garrard 401/Jelco 750L/Ortofon Kontrapunkt B, Pioneer PLC 590, SME 3009/2 , Denon DL103R - DIY Paradise Phono stage - Reel 2 Reel Studer A810, Otari MX55,Tascam BR20 - Digital HTPC / Young Dac - Preamp - DIY B4, 821, Power Amp's DIY Voyager Mono Block, Speakers Tannoy precision 6.4 / Wilmslow Kit Volt BM220.8 / Scanspeak D2905/9500

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