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  1. C

    Is there a frequency formula for this 555 oscillator?

    Thanks so much! :D
  2. C

    Is there a frequency formula for this 555 oscillator?

    Hello, Yesterday I posted this schematic of a simple 555 oscillator. I've built the circuit and it works fine, I'm just wondering if its possible to tell the frequency equation of a circuit like this so that I can determine the effects of changing the capacitor. I know there are frequency...
  3. C

    Transistor Switch?

    Thanks for your help, I have been able to make my circuit work :)
  4. C

    Transistor Switch?

    I have tried this however unfortunately while it can power an LED it cannot power my relay.
  5. C

    Transistor Switch?

    Thank you for your welcome :) I will read the resource and try it out now. Thanks again!
  6. C

    Transistor Switch?

    Hello guys, I've just built this LED blinking circuit and it works wonderfully. What I'm looking to do is instead of connecting an LED I instead have the output hooked up to a relay coil. The problem comes because this circuit outputs a blinking 9v signal and the relay coil requires 12v. I'm...
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