The 555 pulse electric therapeutic apparatus circuit

Published:2011/6/27 22:11:00 Author:Borg | Keyword: pulse, electric therapeutic apparatus | From:SeekIC

This is the stingless electric therapeutic apparatus, whose circuit is shown in the figure. It is formed based on a dual time-based circuit 556. The pulse electric therapeutic apparatus circuit The left side of 555 composes an astable multi-resonance oscillator with R2, R3, RP1 and C1, whose oscillating frequency is decided by the position of RP1, i.e:F=1.44/(R2+RP1+R3)C1 The resonance frequency of the figured parameter is 2~4Hz. Another time-base circuit (1/2 556) composes a single stable trigger circuit. Once the passive LEV pulse of the resonance oscillating pulses on the left side is added on the 8-pin of the trigger terminal of the single steady circuit, a positive LEV pulse is output.



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