Overvoltage and undervoltage protection

LM339 http://ali.pub/49wp26
https://gotbest.by/redirect/cpa/o/q2z...
PCB http://www.kit-shop.org/zip/board.lay6
Instagram   / akakasyan  
Breadboard http://ali.pub/45e33z
https://gotbest.by/redirect/cpa/o/q1p...
Resistors http://ali.pub/45e31u

https://gotbest.by/redirect/cpa/o/q1p...

Capacitors http://ali.pub/45e3iy

https://gotbest.by/redirect/cpa/o/q1p...

LED set http://ali.pub/45e2yj

https://gotbest.by/redirect/cpa/o/q1p...

IR LED Receiver http://ali.pub/45e2ws

https://gotbest.by/redirect/cpa/o/q1p...

Active buzzer http://ali.pub/45e2vm

https://gotbest.by/redirect/cpa/o/q1p...

2N5551 and 2N5401 http://ali.pub/45e3m2

https://gotbest.by/redirect/cpa/o/q1p...



BD139 and BD140 http://ali.pub/45e303

https://gotbest.by/redirect/cpa/o/q1p...



TIP41 and TIP42 http://ali.pub/45e2rq

https://gotbest.by/redirect/cpa/o/q1p...



NE555 http://ali.pub/45e2lp

https://gotbest.by/redirect/cpa/o/q1p...



CD4017 http://ali.pub/45e2j6

https://gotbest.by/redirect/cpa/o/q1p...



LM358 http://ali.pub/45e2h1

https://gotbest.by/redirect/cpa/o/q1p...



LM324 http://ali.pub/45e2eb

https://gotbest.by/redirect/cpa/o/q1p...



My English channel    / @kasyantv  

My Russian channel    / akakasyan  

Facebook   / kasyan-tv-139150916827430  



My laboratory equipment
Multimeters
1 http://s.click.aliexpress.com/e/_dVTJhdM
2 http://s.click.aliexpress.com/e/_dUx8dNG
3 http://s.click.aliexpress.com/e/_d8JyXDU
4 http://s.click.aliexpress.com/e/_Bf8b...
5 http://s.click.aliexpress.com/e/_Bf6l...
6 http://s.click.aliexpress.com/e/_d6W4ZeO
7 http://s.click.aliexpress.com/e/_dUxr3Ro
8 http://s.click.aliexpress.com/e/_d7Vvwei

Current clamps http://s.click.aliexpress.com/e/_dYDjrlM

Power supply http://s.click.aliexpress.com/e/_dTgB2vC

Signal Generators 
1 http://s.click.aliexpress.com/e/_dXihASK
2 http://s.click.aliexpress.com/e/_dYeFZyi

Soldering Irons 
1 http://s.click.aliexpress.com/e/_dW2I6rM
2 http://s.click.aliexpress.com/e/_dUvknv8
3 http://s.click.aliexpress.com/e/_dYT0FBs

Transistor tester http://s.click.aliexpress.com/e/_dZrv7X0

IC tester http://s.click.aliexpress.com/e/_dWa7HSA

Tachometer http://s.click.aliexpress.com/e/_dYPonxo

Sound meter http://s.click.aliexpress.com/e/_dUhuqmw

Microscopes 
http://s.click.aliexpress.com/e/_dXddKDC
http://s.click.aliexpress.com/e/_d7b5IoW

New channel    / @akakasyaneng  
My main channel    / akakasyan  
Second channel    / @kitshop1  

Flayback app https://play.google.com/store/apps/de...
Transformer app https://play.google.com/store/apps/de...