Electronic Circuits - DIY Night Activated LDR Sensor Circuit Using LEDs & Light Dependent Resistors

This electronics video tutorial explains how to create a night activated LDR sensor circuit using light dependent resistors. This circuit turns on a green LED in the dark. The green LED turns off when light shines on the LDR. It also explains how to create a light activated LDR circuit that causes the LED to turn on when the main light is on. Transistors - NPN & PNP: https://www.youtube.com/watch?v=AcxDiesy-nI BJT Transistors - Electronic Switches: https://www.youtube.com/watch?v=VJJuxQk5fTY Finding The DC Load Line & Q-Point: https://www.youtube.com/watch?v=qKIEyN_y3d4 Voltage Divider Bias Circuit: https://www.youtube.com/watch?v=jPSIQDyKm90 Collector Feedback Bias Circuit: https://www.youtube.com/watch?v=EzanqOFnCx4 __________________________________ Emitter Feedback Bias Circuit: https://www.youtube.com/watch?v=V1zKogDwXyk Common Emitter Amplifier: https://www.youtube.com/watch?v=ZUXG9eZfSlw Common Collector & Base Amplifier: https://www.youtube.com/watch?v=SmsTQ7MVqRw Darlington Pair & Beta Current Gain: https://www.youtube.com/watch?v=t1YECnWPGbQ Class A, AB, B, & C Amplifier Circuits: https://www.youtube.com/watch?v=0e_OUyGCaBs Voltage Gain of Transistor Amplifier: https://www.youtube.com/watch?v=-MyVscG-Pew _________________________________ Multistage Transistor Amplifier Circuit: https://www.youtube.com/watch?v=LJrL9N9uhkE Transistor Audio Mixer Circuit: https://www.youtube.com/watch?v=CKaDxZrjaGA Operational Amplifiers: https://www.youtube.com/watch?v=idJEMYhrIfs Summing Amplifiers: https://www.youtube.com/watch?v=p4FQyOwjhLA LM386 Audio Amplifier: https://www.youtube.com/watch?v=MvTCROpv_jw LC Oscillator Tank Circuit: https://www.youtube.com/watch?v=nh4q7mIhLrY _______________________________ Final Exams and Video Playlists: https://www.video-tutor.net/ Full-Length Videos and Worksheets: https://www.patreon.com/MathScienceTutor/collections ________________________________ Light Dependent Resistors: https://amzn.to/3B32MeE Alligator Wires: https://amzn.to/3B1Lwqa NPN Transistors: https://amzn.to/3hCLj4R LED Assortment Kit: https://amzn.to/3z0urLc 9V Battery Clip: https://amzn.to/3kk7MWq Disclaimer: Some of the links associated with this video may generate affiliate commissions on my behalf. As an amazon associate, I earn from qualifying purchases that you may make through such affiliate links.