03:47

earthquake alarm science project || sm electronics || school science Project

05:20

fire alarm project |school science project

05:57

Simple electric circuit || school science project || working model of simple circuit

04:19

simple tone generator circuit using BC557 and CD4060 || sm electronics

03:38

loom solar 55w || Best solar panel || LOOM SOLAR

09:34

Automatic Night Light || how to make automatic emergency light for power cut || using TP4056

09:31

Automatic Night Light using BC547 || 1W LED || LDR Circuit || Emergency Light

07:56

Laser Home Security Alarm System || Science Project|| Inspire Award Project || Alarm Project

17:55

bluetooth on off switch circuit using Bluetooth Audio Module| No Arduino | No HC-05 |science project

12:13

Delay timer circuit using NE555 ।। Delay Time Calculator ।।Delay On Circuit।। Delay off Circuit

03:17

how to get 12v from mobile charger || how to get 12v from power bank

10:13

very useful device ।। इसको बनालो बोहोत काम आयेगा।। polarity tester

05:01

simple fm receiver circuit ।।fm radio circuit ।। using BF494 and LM386।। transistor fm radio circuit

03:57

D2822 Bridge Audio Amplifier ।। 5v Powerful amplifier

08:37

capacitor tester || pf capacitor tester || small value capacitor tester ||capacitor tester circuit

06:33

FM receiver circuit using BC547 ||fm receiver circuit using transistor||how to make a radio receiver

12:30

All component tester || Magic tester || BC547 tester circuit || capacitor tester ||continuity tester

03:32

very useful device||battery polarity tester ||

04:00

very useful device || battery polarity tester circuit

02:40

bc547 led flasher || bc547 led flasher circuit || bc547 led blinker

02:29

Simple Mic Amplifier Circuit using BC547

02:10

Automatic Night Light using Relay 230v AC

06:06

Simple Variable Voltage and Current Regulator Circuit || Adjustable Voltage and Current Circuit

03:33

5 min Timer (Repeated) using NE555 ।। 5 min Alarm || 5min timer kaise banaye || alarm circuit

01:07

Emergency Night Light (1W Led )

03:51

Master Battery Charger || Adjustable Power Supply || LM317 Variable Power Supply

01:46

Simple Touch Sensor || BC547 Transistor Project ||Simple School Project

07:14

9v output from 5v Regulator(7805) || 5v रेगुलेटर से 9v कैसे पाएं???

02:37

Automatic Night Light using Mosfet (IRFZ44N) and LDR || 12V LED Strip

04:10

Transistor Police Siren || Ambulance Siren using Transistor || BC547 and BC557

06:18

Fire Alarm Circuit || Heat Sensor Circuit || Temperature Controlled Fan || PTC thermistor Circuit

01:32

Automatic Night Light using BC547 || 4v LED Strip || LDR Circuit || Emergency Light

04:39

Simple fm transmitter circuit || BC547 fm transmitter || fm transmitter

02:25

Automatic Night Light Circuit

02:50

AC line detector || Wireless AC Line Tester || Line fault Finder Circuit || BC547 Transistor Circuit

04:26

Simple 2 transistor Buzzer Circuit ।। Alarm Circuit ।। Homemade buzzer from speaker

03:57

BC547 transistor Project || Flip Flop Circuit || Dj light circuit

05:45

Adjustable Voltage using 7805 IC || How to get 5v,6v,7v,8v,9v,12v,15v or any voltage using 7805 Ic

10:43

How to Convert 5v Mobile Charger to 12v ।। 5v মোবাইল চার্জারকে 12v চার্জার বানান।। 5v to 12v charger

05:03

Battery Voltage Booster Circuit ||Led Driver Circuit||BC547 Transistor Project [NEW 2021]

03:24

Power bank circuit ।। পাওয়ার ব্যাংক তৈরি করুন।।3000mAh Power Bank

00:33

D2822 or TDA2822 Bridge Audio Amplifier

07:03

Simple 2 transistor Buzzer Circuit ।। Alarm Circuit ।।এলার্ম সার্কিট