555 multifunction electronic acupoint detection and therapeutic equipment circuit

Published:2011/5/24 1:00:00 Author:TaoXi | Keyword: multifunction, electronic, acupoint detection, therapeutic equipment | From:SeekIC

As the figure 16-20 shows, this multifunction electronic acupoint detection and therapeutic equipment circuit is composed of the acupoint detection circuit, the timer, the pulse generator and the amplifier output stage, it can be used in the acupoint detection and the no needle electrotherapy applications. The acupoint detector is composed of the VT1，VT2，R1～R4，RP1，C1，VT3 and T1.etc, actually it is a audio oscillator. The timing circuit is composed of the IC1(555), R4，RP2 and C3. The astable multivibrator is composed of the IC2 and RP4，R8，D3，D4，RP3, C4, the oscillation frequency f=1.44/(RP4+RP3+R8)C4, the oscillation frequency and the duty ratio are adjustable.



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