Freelancer: Bulioner
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NE555 solution

My proposal of circuit is build on two NE555 timers with choice-able by switch SW1 time between 5 sec siren signals (15/30 min). Also it include a charging circuit with current control and current sense to notify end of charging for Pb accumulator. VR2 potentiometer is used to adjust charging current and VR1 is used to set a current level below with LED lights up.

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Genel Açıklama Panosu

  • Bulioner
    Bulioner
    • 2 yıl önce

    Hi, I've checked once again circuit in simulator and I found few mistakes and also made some improvements. Look at new bid.

    • 2 yıl önce
  • Bulioner
    Bulioner
    • 2 yıl önce

    Hi,

    • 2 yıl önce
  • svignan
    Yarışma Sahibi
    • 2 yıl önce

    What is the diffference between charging voltage Vcc & Pb BAT? The whole circuit was supposed to be powered by the 12 V battery. And that battery should be charged using the charging circuit. In the charging end notifier, section, you mentioned a 12 V DC. Where is that coming from?

    • 2 yıl önce
  • svignan
    Yarışma Sahibi
    • 2 yıl önce

    Did you try this on a simulator? If yes, what was the result? Can you share the results?

    • 2 yıl önce