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How to use BJT as a switch? | NPN BJT as a Low side switch | NPN BJT
Published at : 23 Dec 2025
#foolishengineer #Transistor #BJTSwitch
0:00 Skip Intro
00:23 HS & LS switches
01:07 ASICs introduction
01:22 A Circuit
01:49 Use of BJT in a circuit
02:33 Calculations
04:12 Simulation
More Videos:
Videos on BJT:
Basics of BJT -
https://youtu.be/eh8SADFkZ28
CCCV Charging:
Part 2 -
https://youtu.be/tvKW7oSqK8M
Part 1 -
https://youtu.be/Cq2P-Y39IXE
Current Regulators:
CCC with op amp &BJT -
https://youtu.be/91nSQZ6i0Js
CCR with BJT & TL431 -
https://youtu.be/lQxmKdgCndI
CCR with BJTs -
https://youtu.be/COfpQtSRboA
CCR with Zener diode & BJT -
https://youtu.be/beB_i6SvO6w
CCR with LM317 -
https://youtu.be/GCcI7KrgBRM
Power Supplies:
Voltage regulator using transistor -
https://youtu.be/xTSAO9NDJhM
Full Bridge Converter -
https://youtu.be/MeHx_NGU_6E
Half Bridge Converter -
https://youtu.be/pvDcHtfk5Vw
Zeta Converter -
https://youtu.be/klcNgH715pk
Cuk Converter -
https://youtu.be/KarFN8Y_b-M
Buck-boost converter -
https://youtu.be/zNfbbPobtus
Double Ended Forward converter -
https://youtu.be/ZUshgC7sCZ0
Active Clamp Forward Converter -
https://youtu.be/3zkGz46cYL4
Forward Converter -
https://youtu.be/iutzeMAYANw
SEPIC converter part 2 -
https://youtu.be/_BiaoNiJBHw
SEPIC converter part 1 -
https://youtu.be/G4tv4X9VGPM
Flyback converter part 2 -
https://youtu.be/WQXNMNcQoXk
Flyback converter part 1 -
https://youtu.be/Lalsahf5cGo
Push-pull converter part 2 -
https://youtu.be/_sW_LUEcokI
Push-pull converter part 1 -
https://youtu.be/8779DJxK3GE
Boost converter design -
https://youtu.be/ij4a8_VkpGY
Buck converter design -
https://youtu.be/eMJ_ljT20IU
SMPS basics -
https://youtu.be/RPffxopaXaY
Embedded Systems:
SPI Communication Part 3:
https://youtu.be/tOjb6XeSpzw
SPI Communication Part 2:
https://youtu.be/sHmixFJhr3M
SPI Communication Part 1:
https://youtu.be/xogsRnnhK44
I2C Communication Part 3:
https://youtu.be/PpP92m0xCqE
I2C Communication Part 2:
https://youtu.be/UP0aeeuz65U
I2C Communication Part 1:
https://youtu.be/pbqk5yqbfuw
UART Communication Part 2:
https://youtu.be/QmjKRwgddxw
UART Communication Part 1:
https://youtu.be/JuvWbRhhpdI
Basics of Communication:
https://youtu.be/bdgCFkc_RXY
Power Electronics:
Power Factor Correction -
https://youtu.be/KVZVGHwp7B0
Power Factor -
https://youtu.be/Bo0MGZKhPrs
Electric Vehicles:
Battery management system 2 :
https://youtu.be/q4wDa_m9-8E
Battery management system 1 :
https://youtu.be/KDaBn9PLRKI
Battery basics part 4 :
https://youtu.be/2ZZqYv8ubP8
Battery basics part 3 :
https://youtu.be/UxCVFMYmdXc
Battery basics part 2 :
https://youtu.be/20PdUoOfE34
Battery basics part 1 :
https://youtu.be/3jiVgF2Sig4
EV motor controllers part 2:
https://youtu.be/4agZpzYRu2A
EV motor controllers part 1:
https://youtu.be/YJU6K0T_dG8
Charging of EVs:
https://youtu.be/ENfrJyodO2o
EV basics:
https://youtu.be/OZrZ-IPKS80
EV parameters:
https://youtu.be/EyZZvoI6NBs
EV Motors:
https://youtu.be/Hm2OnnOju_c
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