transistor and diode blocking voltages

[bumdegi]

Can someone please explain to me how transistors can block positive
voltage whereas diodes block negative voltage.

Cheers

 

[HardySpicer]

Can someone please explain to me how transistors can block positive
voltage whereas diodes block negative voltage.

Cheers

Depends which way round they are connected and whether they are P or N
type!


Hardy

 

[Jasen Betts]

Can someone please explain to me how transistors can block positive
voltage whereas diodes block negative voltage.

Diodes block reversed voltage due to the way in which the conduct
electricty causing a break in the conductive path when they are
reversed in relation to the voltage.

http://en.wikipedia.org/wiki/Diode

transistors can be used in combination with other electronic parts to
regulate or block over voltage but how they work is more complicated.

http://en.wikipedia.org/wiki/Linear_regulator
http://en.wikipedia.org/wiki/Transistor

MOSFETs (a type of transistor) can also be used like a diode to
protect against backwards voltage.

Further questions of this nature are bast asked in
sci.electronics.basics

Bye.
Jasen