Turn your old 12V charger into adjustable 3V to 20V power supply

what is Tl431?
The TL431 is a three terminal adjustable precision shunt voltage regulator integrated circuit. With the use of an external voltage divider, a TL431 can regulate voltages ranging from 2.5 to 36 V
I'm using A CCTV camera Power supply 12V and it has a Optocoupler Feedback So I can hack The Power supply (MOD) It using a Voltage Devider That it will create 2.5V on Middle pin of Devider so The Optocoupler led lights up a so pwm starts to increase voltage also increase but voltage deviders voltage is no longer 2.5V so It regulate the voltage to create 2.5V On Devider.....!
see more on
electronic/tl431.com.psu
#howtomakeadjustablepowersupply
#DIYPowersupply
#Powersupplyhack
#Voltageincrese
#power supply
#3V
#7v
#9v
#12v
#25v

[@qadeer1685]

Very good job ❤❤❤

[@koyarbakir775]

Hi I have a question I have a power bank module to charge my lethuim ion batteries but I don't want the battery charge to go back to the module so I added a diode how would that affect the charging will the module detect the right voltage or will the diode affect the voltage reading of the module?

[@electroniclover2900]

Great work bro

[@RamKumar-kp6wz]

Can I give direct power supply without lamp? After these type of modification

[@ryanmayo5669]

Hello can i use other transistor like S8050

[@kalashnikov_47z]

Wow amazing ⭕❤️⭕

[@masoudmontazery907]

Good luck sir

[@cristiankroc9222]

be careful it's upside down

[@arajasujathaars6894]

sir in the market no 5k pot its starting 10 what i can i do please

[@electroboommini6951]

Nice work ❤️

[@bertramdonalddezilvas9661]

cant you keep the audio low. audio so loud it ruins ones desire if watching the video.

[@drchan5893]

you need to clean ya soldering iron , and zoom ya camera out a bit you have it too close

[@zakaryagaming999]

I have a question I am a technician. I need help How to make a 3V to 60V and 10amp variable power supply from a 12v 20amp battery charger

[@user-mn3th7fx2y]

Why from 3V

[@ahmedkaram40]

اين مخطط الدائره يا صديقي

[@celalrecep1657]

Hiç anlaşıŕ bir durumu yok

[@ravikantgupta713]

poor video

[@treadmillrepair754]

This circuit is wrong, optocoupler can't be conected to pin one, this is the reference of the TL431.