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.

bypass capacitor in a transistor

Status
Not open for further replies.

neo_star

New Member
i want to kno why the by pass capacitor in the emitor terminal should be electrolytic
 
When you get over 0.1uF, have you ever compared the physical size of non-electrolytic capacitors to the size/volume of electrolytics?
 
Sorry. I had to.
**broken link removed**
 
Non-electrlytics are also more expensive than electrolytics, especially for large capacitances. THis is pretty much the reason why they are used where they are, rather than some other kind of capacitor...it's pretty much their only advantage.
 
It doesn't need to be electrolytic. The value depends upon the lowest frequency to be bypassed. The reactance of the capacitor is generally 1/10 the resistance of the emitter resistor, so the value of the capacitor depends upon the frequency.
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top