Issalla LED Dala circuit eka check karala balanna. NE555 3 weni pin ekatai + tai LED ekak (Resister ekakuth ekka) thiyala balanna, 555 wedadha kiyala.(LED eka nivi nivee paththuwenna ona). weda nam 4017ta LED Dala Balanna. Samahara wita Output leak Unama samahara LED lawata paththuwei. ehema wenawa nam IC eka narak wela. ehemanam diode ekak danna Ic pin ekai D400 base ekai atharata dala balanna puluwan. LED hariyata paththu wenawanam me widiyata relay danna. D400, 1N4001 danna. Relay On welama thiyenawanam D400ye base eka galawala balanna. ehakotath ehemanam D400 short wela.
Meke signal eka improve karanna use karala thiyenne + Voltage ekak collector ekata.emmiter eken out eka.Base ekata signal eka.

