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it is not necessary that always positive voltage should act as a forward bias voltage , it is the potential difference between cathode and anode that makes it forward or reverse biased .
it the anode(p- doped material) positive with respect to cathode(n- doped material) --> forward biased
it the anode(p- doped material) negative with respect to cathode(n- doped material) --> reverse biased
ex.
anode - 5v cathode - 3v
anode - 1v cathode - -2v
both the examples are forward biased.
What else can I help you with?
What is mean by limitter diode?
Diodes theoretically conduct in one direction but not the other. In practice, diodes require a certain amount of voltage too make them conduct. We call this "forward bias". For silicon, it's 0.6 volts. If we connect two silicon diodes in parallel, one in each direction, across a 2 wire port (let's say it's carrying an audio signal), as long as the signal says below the forward bias voltage, nothing happens. When the signal exceeds 0.6 volts (positive and/or negative), the diode conducts, and the portion of the signal exceeding 0.6 volts is shunted, which limits the signal to 0.6 volts. For other voltages, we can use Germanium (0.2 volts), zener diodes, and such.
What do you call a diode installed across a coil with the cathode toward the battery positive?
A diode connected in this way is a flyback diode or kickback diode. There are some other names that may be applied. The diode is a protection device. When power to the coil is discontinued, the electromagnetic field around the coil will collapse. The collapse of that field will induce a voltage, and this could expose circuit elements to "kickback" from the field collapse. The polarity of the induced voltage will, however, forward bias the diode, and it will conduct current for an instant. The inductive kickback of the coil will thus be damped by that diode.
Why is the control grid of a triode maintained at a negative potential?
The voltage on the control grid in a triode controls the current flowing from the cathode to the anode. When the grid goes negative, the tube is said to be cut off and no current will flow. When it goes positive, current starts to flow. As it goes more positive, more current flows. At some point, increasing the grid voltage won't cause any more cathode-to-anode current (plate current), and we call that saturation. We have to decide what to set the grid voltage at, and that is what we call biasing the tube. (We need to bias it.) Where do we want the tube operating with no signal applied? What kind of circuit is it in and how are we going to operate it? Class A, class B, class C or class AB? If a triode is set up with the grid negative all the time, no plate current will flow. If we set it up so that the grid is negative a little bit, then the input signal will have to go positive enough to overcome this voltage before plate current will flow. During the negative portion of the input signal, the tube will be cut off. Remember that it will only have plate current for a portion of the positive half of the input signal when the input voltage exceeds the "set" voltage on the grid (the bias voltage). This means that the amplifier will be operating class C. The class C amplifier operates for less than 180 degrees of the input signal.
Why when I dail a different number it shows call forward?
If you dial a number and your screen shows 'call forward', it means that your call is being forwarded.
What is call a force that pushes charges along?
The voltage.
What do you call someone who is bias against people of other ethnic groups or races?
A person who is bias against people of other ethnic groups or races is prejudiced.
What do we call the voltage that is provided by a transformer?
This is the transformed voltage, but it might also be identified as the secondary voltage as it is taken from the secondary winding.
Can you call voltage as a potencial difference?
A: absolutely
What do you call the interests of the media industry that influence which stories reach the public?
Media bias
Another name for a striker?
You can call them 'forward'
Can you call forward my t-mobile phone calls from my computer?
Call forwarding system can actually be set up according to your preset answering rule. Example: You can forward call to another number when you are busy or forward calls to another number when call is unattended after certain number of rings. Easy call forwarding from your PC to your mobile phone is done if you have a desktop call control system.
How do you disable a call forward for Att Samsung Galaxy 5?
You can disable a call forward for Samsung Galaxy S5 if you are on AT&T by dialing *63 and following the prompts.
