no we not use resistance in place of diode.
Backward diode
its the simplest thing to do. There are three legs in a transistor, one each of collector, base and emitter. So if you need to use it as a diode, just connect either collector-base or emitter-base. Say, if you use an NPN transistor, then the base region will be the anode of diode and emitter or collector will be the cathode of the diode.
Bipolar Transistors and Diode's .
There are thousands of different zener diode types...use the internet to locate a data sheet for a particular type.
It's primary usage is to determine the nature of an induced EMF from changes in the magnetic flux through a circuit. However, you must use Faraday's Law (and a unit conversion factor) to determine the SIZE of such an EMF.
The use of the pn diode is for rectification. It can also be used as a switch.
Use a voltmeter.
no we not use resistance in place of diode.
Backward diode
The ac resistance of a diode is found using the equation: (The change in Vd)/(The change in Id) An easier was is to use the Equation: 26mV / Id. This is a general form as the ac resistance of a diode change as the temperature changes.
Use of a diode across a DC electromagnetic device, such as a valve, is to counter the reverse voltage (EMF) caused by the collapse of the magnetic field when the power is turned off. If the diode were not present, the reverse voltage can become very large, even to thousands of volts or more, and it can damage the associated circuitry. In this application, the anode is connected to the negative side, and the cathode is connected to the positive side. When power is applied, the diode does not conduct. When power is removed, and the inductor attempts to maintain the current flow by generating a reverse voltage, the diode conducts until the magnetic field collapses.
Diode is a two terminal semicon. Diode is a Switching device
"voltmeter"
You can measure the emf of a cell by using a voltmeter, as this draws current from a cell. You can use the voltage, the emf, and the load resistance to determine the internal resistance of the cell.
Example sentence - The little red diode can be used as a pin on a tie.
the diode is forward bias ANSWER: A bypass diode is used to bypass circuitry as soon as the diode is forward bias by 0.6 volts The use it to bypass to prevent damage to the circuitry