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Recent content by vidakk

  1. V

    How to change the frequency of 555 IC timer?

    Re: 555 ic timer You can find the datasheet here: https://www.datasheetcatalog.org/datasheet/stmicroelectronics/2182.pdf The fomulas you want: Charge period (output high): t1=ln(2)*(R1+R2)*C1 Discharge period (output low): t2=ln(2)*R2*C1 Total period T is t1+t2, from there you can calculate...
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    Is it safe to try to light a 120V light bulb?

    Re: is this SAFE? Standing on insulated desk will prevent earth return path, but won't help much if he touches woth live and neutral. Mains voltage is very dangerous, and is not to be taken lightly! If you ask if it is safe it probably means you are not very well aware of risks, so DON'T do it...

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