Published:2011/11/10 2:58:00 Author:May | Keyword: 555, vehicle turn signal, electronic flasher | From:SeekIC
As shown in diagram 20-15,the flasherconsists of 555 oscilator and driver. Comparing with thermorelay scintillator, its advantagesinclude: low cost, strong power supply voltage suitability, high reliability, etc.
555 and R1, R2, C1 make up astable multivibrator, its oscillating frequency is about 1HZ. It adopts VMOS K75 tube as driving switch. When car turns left or right, it can break overto lightthe left or right indicator.
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