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555 Pulse Timer Circuits Download

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555 Pulse Timer/Oscillator

pulsetimer

Parts List required to make this Pulse Timer Circuit:

   
  R1 = 1 M
   R2 = 10K
   R3 & R4 = 1K

   C1 = 10uF, 16V, Electrolytic Capacitor
   C2 = 0.01uF, Ceramic Capacitor
	 
   Q1 = BC547 NPN
   Q2 = 2N2222 NPN
   D1 = 1N4001 Diode
  IC1 = 555 Timer
  RLA1 = Relay, 9V 

 

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