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Sunday 1 January 2017

Electro Harmonix Frequency Analyzer

Here are two layouts for a classic Ring Modulator.
The first one is for a vintage version (schematic available here).
The DIP version of 1496 had a different pinout.
The second one is for the modern vesion and it could potentially fit in a 125B size box (there is no schematic but a PCB layout here).
Not sure if they have been verified.
You should be able to use Mark's Bipolar Voltage Converter.



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33 comments:

  1. IvM1 January 2017 at 13:43

    Have a great new year!

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  2. Auditory Driving1 January 2017 at 20:17

    Happy new year!!!

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  3. Auditory Driving1 January 2017 at 20:22

    Happy new year!!!

    ReplyDelete
  4. Unknown1 January 2017 at 23:33

    Happy new year! Sweet! I was just looking for a ring mod to build.

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  5. Unknown2 January 2017 at 04:45

    This comment has been removed by the author.

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  6. bonsaiforum.gr2 January 2017 at 08:13

    Happy New Year!

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  7. helveticat7 January 2017 at 10:46

    Happy new year! What a great addition -- ring mods are one of my favourite effects. Tis one's a bit of a scary size for me just now (and thanks to this site I have a huge build list already) but I'll definitely be tackling it at some point in 2017.

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  8. Clochard9 January 2017 at 21:31

    Hi
    Is anybody ging to Build this one? I started a board Of the modern version But i cant find a 10uf ceramic cap. If i Use a electrolyt what Would be the right Direction?

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    Replies
    1. Alex10 January 2017 at 10:42

      That's a bipolar electrolytic cap.
      If you use a polarized cap I think the + side should connect to Blend 1.

      Delete
  9. Unknown11 January 2017 at 00:08

    What type of i.c. is the 8038? I can't find anything with that code number at my suppliers.

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    Replies
    1. Hozy3111 January 2017 at 08:47

      Its an ICL8038. Should find on Evilbay for a couple of quid/dollars.

      Delete
    2. Unknown12 January 2017 at 11:32

      I recently bought 2 on eBay for like 3 euros with Free shipping from ebay. On eBay you'll find a lot of cheapo function generator kits with this chip.

      Delete
    3. Unknown12 January 2017 at 11:36

      Anyone have a good source for an ad63? It seems like they are discontinued and cost around 7 or 8 euros

      Delete
  10. Hozy3113 January 2017 at 18:32

    Call it verified! Built the modern version. Sounds very similar to the YT vid i'm surprised to say. Getting some lovely sounds out of this. Great job Alex as always.

    Brent, i think i got my AD633's from Banzai, but i don't remember paying what there charging now.

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    Replies
    1. Hozy3113 January 2017 at 20:11

      I should have added that the Blend pot is working backwards so 3 and 1 should be swapped.

      Delete
    2. Alex14 January 2017 at 11:37

      Thanks Gavin!
      I've swapped the Blend's lugs.

      Delete
    3. Kinski17 January 2017 at 05:00

      How are you powering it? Did you use the bipolar charge pump?

      Delete
  11. Hozy3117 January 2017 at 15:01

    Yes, i'm using Mark's Bipolar Voltage Converter.

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    Replies
    1. Kinski20 January 2017 at 03:03

      Great! One more question, is your AD633 labeled with ANZ or JNZ? Seems there are a few versions out there, and not all are quite the same.

      Delete
    2. Kinski20 January 2017 at 03:07

      Read the data sheep closer. ANZ and JNZ have same pinout. But there are also JRZ and ARZ, that have a different pinout. Not sure which one this layout is for.

      datasheet: http://www.mouser.com/ds/2/609/AD633-877235.pdf

      Delete
    3. mirosol20 January 2017 at 05:36

      Keep on reading it closer.
      Note that the ones with different pinouts are in SOIC (SMD) package and PDIP (through hole). So the SMD chip is not pin-to-pin compatible with this layout.
      +m

      Delete
    4. Kinski20 January 2017 at 13:46

      Ah, I see that now. My bad. Thanks.

      Delete
    5. Hozy3120 January 2017 at 15:26

      My AD633 has JN after but no Z

      Delete
  12. Unknown8 February 2018 at 01:36

    Hey! Just wondering what way the 2u2 caps are supposed to go in case you're using bp electrolytics. Anyone?

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  13. Kostis16 June 2018 at 10:00

    Hi there guys, the 4558 is something specific or can I use any opamp (NJM, TS, JRC)?

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  14. pinkster24 January 2019 at 23:48

    for a non polarized cap, take two electros of double the value, and tie the cathodes together (-'s)
    after that you can use either anode either way, and you'll get a no polarized cap at the value you need.

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  15. pinkster16 February 2019 at 19:27

    hey, anyone got the pinout for the old can style chips?
    i got some ua796 chips, but i can't find the pinout for them to save my life. appreciate thehelp!
    peace!

    PjP

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  16. pinkster16 February 2019 at 19:35

    awe, fuck, i don't think these things are gonna be compatible, what i have is 10 pin chips in a TO-5 package. FML!

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  17. tep17 May 2019 at 07:41

    This comment has been removed by the author.

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  18. TTonn17 August 2023 at 15:47

    Anyone have any luck with the vintage version of this? I managed to get it mostly working by adjusting the pinout of the 4096 to take signal from pin 2 (as in the original schematic), but I'm getting significant carrier wave bleed through the whole thing, even once the input trimmer is perfectly biased. I've tried to adjust the voltages at both the carrier and signal input and I've swapped out 4096s. Any suggestions for getting the 4096 properly balanced?

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    Replies
    1. TTonn17 August 2023 at 21:46

      Sorry, I meant taking the sine wage signal from pin 2 of the 8038 (the layout has it coming out of pin 1).

      Delete
    2. es7ebanpum429 March 2024 at 00:58

      @TTonn

      Delete
  19. Patty21 August 2023 at 06:53

    Any thoughts on modding this with a Hi/Lo range switch for the oscillator, similar to the Fairfield Randy's Revenge to get some trem/vibe sounds out of a lower oscillator range?

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