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Electronic Doorbell Circuit using a 555 and CD4017

Electronic Doorbell Circuit using a 555 and CD4017

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  •  January 30, 2021
  •  Electronic Doorbell Circuit using a 555 and CD4017
  •  Posted by Marcel at 8:24 am
  •  No Responses
  •  Alarm Circuits
  •  Tagged with: 4017, ujt

Electronic Doorbell Circuit using a 555 timer and a CD4017 decade counter

Electronic Doorbell circuit that lets know that someone is at the door. Made with 555 timer and 4017 decade counter allowing to change the tone of each note

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Two-way traffic light Circuit using 555 and CD4017

Two-way traffic light Circuit using 555 and CD4017

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  •  November 22, 2020
  •  Two-way traffic light Circuit using 555 and CD4017
  •  Posted by Marcel at 8:43 am
  •  No Responses
  •  555 Timer Circuits, LED Circuits
  •  Tagged with: 4017

Two-way traffic light Circuit using 555 and CD4017

This Electronic two-way traffic light circuit achieves the functionality of a typical two-way traffic light using a 555 timer and a CD4017 decade counter.

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Music Box Circuit using a CD4017 and two 555

Music Box Circuit using a CD4017 and two 555

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  •  September 24, 2020
  •  Music Box Circuit using a CD4017 and two 555
  •  Posted by Marcel at 5:19 am
  •  No Responses
  •  555 Timer Circuits
  •  Tagged with: 4017, music

Music box circuit using a CD4017 decade counter and two 555 timers.

This circuit attempts to emulate the operation of a music box. The maximum number of notes is 10, allowing us to make a simple melody.

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LED Sequencer using 4017 Decade Counter (LED Chaser)

LED Sequencer using 4017 Decade Counter (LED Chaser)

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  •  September 8, 2020
  •  LED Sequencer using 4017 Decade Counter (LED Chaser)
  •  Posted by Marcel at 5:11 am
  •  No Responses
  •  LED Circuits
  •  Tagged with: 4017, nand gate, oscillator

LED Sequencer using 4017 – LED Chaser.

This Circuit has 10 LEDs connected to the 4017 decade counter outputs. LEDs light up in sequence. Only one LED is ON at a time

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How to make a Police Style Strobe Light Circuit?

How to make a Police Style Strobe Light Circuit?

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  •  April 9, 2019
  •  How to make a Police Style Strobe Light Circuit?
  •  Posted by Marcel at 10:27 am
  •  No Responses
  •  555 Timer Circuits, LED Circuits
  •  Tagged with: 4017

Police Style Strobe Light Circuit.

This circuit shows the familiar lights which are used on police cars. It uses a 555 timer as a clock for the 4017B decade counter, two transistors and twelve LEDs

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