Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

capacitor

Status
Not open for further replies.

EfeVural

New Member
In the attached file i charge a capacitor when voltage is applied and decharge when 0V is applied by the help of an and gate(for simulation). What i want to do is capacitor will charge the same way ; but when 0 volts come i do not want its voltage to drop down but rather i want it to stay steady at its reached level like the yellow line in the picture i drew in paint.... How can this be possible?
 

Attachments

  • capacitor.JPG
    capacitor.JPG
    156.4 KB · Views: 161
When you charge a large capacitor or a capacitor bank it is like a dead short on the power supply. You need a current limiting resistor to prevent it from destroying your rectifier. If you need it to charge faster use higher current diodes or put several diodes in parallel.
 
If you need it to charge faster use higher current diodes or put several diodes in parallel.

that won't work because diodes have a negative Vfw coefficient. The first one to turn on will get warmer and it's forward voltage will drop and take all the current.
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top