555 mini electronic massager circuit

Published:2011/5/23 6:53:00 Author:TaoXi | Keyword: mini, electronic massager | From:SeekIC

As the figure 16-24 shows, the astable multivibrator is composed of the IC(555) and R1，R2，RP1，C1, the oscillation frequency is between 1 to 100Hz, you can change the frequency by adjusting RP1. The composite promoting stage is composed of the VT1 and VT2, T1 uses the E140 ferrite core, the primary stage is binded with 120 turns of enamel insulated wire (the diameter is 0.15mm), the secondary stage is binded with 5000 turns of enamel insulated wire (the diameter is 0.08mm). The transducer uses the FY35-1A piezoelectric ceramic.



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