Electroacupuncture stimulator. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Medicine
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At present, the traditional use of acupuncture in medicine can successfully replace the electrical stimulator of biologically active points. This simple device will help you treat various diseases on your own. It will be especially useful in diseases that give an allergic reaction in the case of chemical treatment.
When using an electro-acupuncture stimulator, you should consult with an experienced doctor in the field of acupuncture, who will tell you which points and how are connected with the internal organs.
To facilitate the search for active points, the stimulator has a switch position S1 SEARCH (Fig. 6.3). It is known that the resistance of the skin at the location of the active points is much less than in other places. This feature is used in the search. The value of the surface resistance can be found by the value of the deviation of the pointer of the device PA1. The correct determination of the biologically active point of the body can also be judged by the large amplitude of deviations of the pointer of the PA1 device in the WORK mode.
When using the device, one electrode is attached to the ear with a current-conducting clamp, and the second, made in the form of a sharp probe (the end radius is 0,3 ... 0,6 mm), touches the points of the body. At the same time, a slight tingling sensation should be felt at the active points (when the device is turned on).
(click to enlarge)
Resistor R9 can control the amount of current flowing. The desired point is stimulated for 15...20 seconds. -and it is undesirable to stimulate many points in one session.
The device is powered by a 7D-0.125D battery or a similar battery with a voltage of 9 V.
The device has a sound indication that is triggered when the supply voltage drops below 7,4 V, which allows you to change or recharge the batteries in time.
The electrical circuit of the stimulator is assembled on three CMOS chips, which ensures low current consumption. It consists of a master oscillator on the elements of the chip D1.1 and D1.2, a frequency divider (D2), a voltage reduction indicator (VT1, D1.3, D3.1 ... D3.4). A bipolar voltage with an amplitude twice as large as the supply voltage acts on the output electrodes of the circuit.
When the device is turned off (position 81 - OFF), one of the groups of contacts shorts the leads of the PA1 microammeter, which protects the mechanism of the measuring device from damage during transportation.
The circuit uses variable resistors of the SP2-2-0.5 type, and the remaining resistors are C2-23, capacitors of the K10-17 type. Microammeter RA1 with a scale of 50-0-50 μA, for example, type M4247 (zero in the middle of the scale). Piezo emitter HF1 is replaced by -P-3, -GI 8 or similar. Switch S1 - PG2-18 - P4N.
The transistor can be used with any last letter in the designation.
Setting up the circuit consists in setting the threshold for the sound signaling device with resistor R2 when the supply voltage changes. This will require a stationary source with a variable output voltage.
When using these parts, the entire device is easily placed in a housing with dimensions of 110x110x30 mm.
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