Simple Basic Time Delay Circuit Using NPN Transistor.

Simple Basic Time Delay Circuit Using NPN Transistor.
Simple Basic Time Delay Circuit Using NPN Transistor.


In This Video, We Discuss the Making of Simple Delay Timers Using Very Ordinary Components Like A Transistor, Capacitor, And Resistance. This Circuit Will Produce Delay On-Time Intervals at The Output for A Predetermined Period, From A Few Seconds to Many Minutes. According To The Resistance And Capacitor Used.

Things Needed for the Basic Time Delay Circuit:


-Bc547 Transistor NPN. (Or Any NPN Transistor)
-Push Button. (You Can Use Any Push Button You Have)
-9v Powers Supply. (You Can Use A Lithium-ion (Li-ion) Battery 18650,3.7v)
-Red Led. (Any Color Led Just for See Delay Time)
-15kΩ Resistance. (You Can Use 10kΩ Resistance or Big Value for More Time Delay)
-470Ω Resistance. (You Can Use 220Ω This Resistance for Protecting Your Led)
-100uf Capacitor. (You Can Use Big Capacitor Range for More Time Delay)
-9v Battery Holder. (For Connect Your Circuit With 9v Battery)

Schematic Drawing of Basic Time Delay Circuit:


Schematic Drawing of Basic Time Delay Circuit:
Schematic Drawing of Basic Time Delay Circuit:


Illustration Drawing of Basic Time Delay Circuit:


Illustration Drawing of Basic Time Delay Circuit:
Illustration Drawing of Basic Time Delay Circuit:


A YouTube Video Explaining How to Make and Test A Simple Time Delay: