which is mors efficient?
2007-08-21 23:22:53 · 3 answers · asked by mahesh s 1 in Science & Mathematics ➔ Engineering
They are different things. Diodes are essentially valves that allow current to flow in one direction, at least most. This could get to be a long answer. You really don't get any "work" out of a diode so efficiency is not really applicable.
A transistor on the other hand van be used many ways, as switch, just on or off. As amplifiers by varying output in response to a signal. I guess the simple answer is each is best for it's purpose. Lousy but accurate answer. Technically a diode is more efficient since it uses almost no power to make it function.
2007-08-21 23:42:58 · answer #1 · answered by Charles C 7 · 1⤊ 0⤋
Essentially, the p/n or n/p base-emitter junction is a diode. With the collector open, the base/emitter junction of a transistor can be used to replace an ordinary diode in many electronic circuits.
Actually, now that I think about it, the transistor base/emitter junction could be a more efficient device than a regular diode because, the transistor housing lends itself better to interfacing with an external heat-sink which improves heat transfer and device cooling. Heat sinking with a regular diode would be a bit harder to do. All this depends of course on circuit application and desired results.
2007-08-22 04:32:27 · answer #2 · answered by Bob D1 7 · 1⤊ 0⤋
It depends on ur application. Diode is unipolar while transistor is used for current/voltage amplification. Diode is used in detector circuits to decode the signal. For efficiency plz follow the data-sheet of perticular product. Transistors r available with gain between 10-1000 depending on ur usage.
2007-08-21 23:55:00 · answer #3 · answered by Pravin M 1 · 0⤊ 0⤋