acupuncture point locator circuit diagram

Acupuncture Point Locator Circuit

This acupunture point locator circuit is used to locate the sensitive acupuncture points location on the human body. Acupuncture belongs to the traditional alternative medicine. This healing method require the knowledge of the correct location of the important ponts of the body. Traditional acupuncture specialists rely on their expert knowledge to locate these points.

Many of them also use electronic devices to help them locate these points. Most of these electronic devices measure the skin resistance based on the observed phenomenon that the skin resistance is lower on these acupuncture points.

The featured electronic acupuncture point location circuit uses a PLL IC CD4046. This is a CMOS IC with an integrated VCO that is ideal for the application. The frequency range of the VCO is set by the RC circuit R3/C1. This is also dependent on a control voltage. This control voltage comes from a voltage divider circuit which is made of the skin resistance in conjunction with R1 and P1. With a decreasing skin resistance, the control voltage and the frequency increases. The signal can be heard through the speaker. Transistor T1 delivers enough power to drive the speaker.

Acupuncture point location circuit diagram

acupuncture point locator circuit diagram

Use only batteries to power the acupuncture point locator circuit. Never connect it to main power lines. The current consumption is around 45 mA at 9 volts.


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  • nara

    Good application description. It could be better to say how the probe(s?) is connected to body? single point of connection will not close the circuit? Where is a return path to complete the skin resistance? Grounding tube is connected to supply? ( not an issue but is it also connected as other terminal to skin? I have never seen an acupuncture center so my questions may not sound nice

  • Michael Gasperi

    Nice! I’ve seen a lot of Galvanic Skin Response GSR circuits like this over the years, but not one that uses a CD4046. Where did this circuit come from originally? Is it from a product or magazine article?

  • mrkang92

    Hi! Please give me the exact value of C3 and P3 (it seem lack of unit) and informatio about the probe.

  • Sagacity61

    Where does anyone buy a 10 megohm potentiometer ???

    • Gabor Orosz

      Hallo Sir
      The value of 10 Mohm can be rare to buy
      but please do not worry : try to replace
      it with resistence chain of nine 1 Mohm
      resistors plus one 1 Mohm pot-meter
      and a switch of many poles which
      short circuits the resistors .

  • Ferry

    Please Sir could you tell me the list component of this project? Do you sell the component of this project? I don;t understanding on point probe, P1 (potensiometer size is only 1M, how can i find for 10M?), and what type and polarity of C1 and C3? it’s electrolit capacitor?
    Please mail me. Thank you

  • Gautam

    my dad has a similar piece of equipment which is broken (not in working order) could you advise me regarding repair of the same:
    2 transistors (2N4401 – NPN type)
    1 capacitor 5 micro F(print not legible)
    4 resistors
    1 transformer 12 V
    and one 500k VAR

    I can also send you a pic of the circuit.
    any help will be greatly appreciated.


  • Ashok

    Hi sorry for the blunder, last message send to Garth is for Karl. Apologies to both Garth and Karl, and request a reply from Karl

  • Ashok

    Hi Garth
    i have the same dillema as that of Ramsingh. could you please give me the details of the point probe & the grounding tube: Material, shape, dimensions of the probe. what is the purpose of the tube

  • ramsingh

    pl send me the details
    of the point probe/ grounding tube:
    – material, shape, dimesions of the probe
    – What’s the purpose of the tube

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