Recent content by kipper2k

  1. K

    Request help with 555 timer circuit

    @Averagesupernova Thanks for the help. Circuit is working, the discharge through the signal diode is slow, can take about 5 - 7 seconds, i haven't tried too many different values to judge the response. @vk6kro. Thanks for the different option. Looking at the circuit and trying to...
  2. K

    Request help with 555 timer circuit

    I have the circuit almost working, the only problem is that it requires the button to be pushed to complete the circuit and if the button is held then it will not turn off the led. What i am trying to do is to use an external 12v power supply so that when the power is turned on i would...
  3. K

    Request help with 555 timer circuit

    Thanks for the reply, I found this schematic at theis webpage (http://www.eleinmec.com/article.asp?4) [PLAIN]http://www.kipper2k.com/monostable.gif Based on the formulas provided i can make a 5 second (approx) LED display using R = 47K C= 100uf I am assuming that i can just bridge...
  4. K

    Request help with 555 timer circuit

    Hi all, I would like to make a 555 timer circuit that when 12v is applied to the circuit an LED will light for 3 - 5 seconds and then go out. and remain out until the 12v is removed and reapplied. Any help greatly appreciated. Thanks
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