Electronic – Why can’t we use diodes in place of batteries

batteriesdiodes

1.why we cant use diodes in place of battery?we are getting 1.4v in a cheaper cost than battery.but why we dont use?

2.if electrons are moving in a single direction it releases many energies but why we are calling it as "current"?


Probably can be put as follows. Opriiginal poster may wish to check this wording:

  • Why can diodes not be used instead of batteries as a source of energy. Bothe batteries and diodes have current flow in one direction and diodes have potential voltages of up to 1.4V and are cheaper than batteries – so they seem like better choice.

  • Electron flow in a single direction provides a source of energy.
    Why do we call this energy flow "current"?

Best Answer

As originally asked, the question was:

  • 1.why we cant use diodes in place of battery?we are getting 1.4v in a cheaper cost than battery.but why we dont use? 2.if electrons are moving in a single direction it releases many energies but why we are calling it as "current"?

Answer:

  • Diodes are not an energy source.
    They modify how energy may flow.
    Their function is to allow current or electrons or charge to flow in one direction in a circuit much more readily than in the other direction.
    A good analogy is to think of them as a non-return valve of one-way-valve in a water flow system.

  • Batteries are energy sources - usually a means of converting chemical energy into electrical energy.
    A good analogy is to think of them as a "pump" in a water flow system.
    Just as a pump is NOT a pure energy source in its own right, but a way of converting some other form of energy to "flow", so a battery is a converter, turning some other form of energy into electrical energy. usually chenmical energy is the source.

  • Electron flow is termed "current flow" because of the traditional and useful analogy with flow of water in a water flow system.

  • Many of the elements in a basic electrical system have equivalents in a water flow analogy. The comparisons are NOT EXACT but are useful.

    • Voltage: Pressure, water head.

    • Current: Water flow

    • Resistance: obstruction to flow, pipe resistance,

    • Capacitance: inline chamber with a elastic diaphragm across it.

    • Inductance: inline chamber with walls made of elastic material.

    • Diode: One way valve.