Drop high voltage to low voltage using a silicon rectifier diode
A diode is a semiconductor device that essentially acts as a one-way switch for current. It allows current to flow easily in one direction, but severely restricts current from flowing in the opposite direction.
Drop high voltage to low voltage using a silicon rectifier diode
A rectifier diode is a two-lead semiconductor that allows current to pass in only one direction. Generally, P-N junction Diode is formed by joining together n-type and p-type semiconductor materials. The P-type side is called the anode and the n-type side is called the cathode.
PR1 = 12V
Because each diode drop 0.7V So for 10 diode drop 10x0.7 = 7V
PR1 = 19V - 7V = 12V
Formular used
Voltage dop = Total number of diode connected in series x 0.7V
V(out) = V(in) - Voltage drop
Types of Diode
The types of diode include:
- Zener diode
- PN junction diode
- Tunnel diode
- Varactor diode
- Schottky diode
- Photodiode
- PIN diode
- Laser diode
- Avalanche diode
- Light emitting diode
Main functions. The most common function of a diode is to allow an electric current to pass in one direction (called the diode's forward direction), while blocking it in the opposite direction (the reverse direction). As such, the diode can be viewed as an electronic version of a check valve.
Which way do diodes go?
In a perfectly ideal diode, current flows in one direction only, from the anode (positive side) to the cathode (negative side) which is marked with the stripe. The schematic symbol is a triangle pointing towards a bar, where the current flows in the same direction, towards the barred (striped) end.
Are diodes AC or DC?
What Do Diodes Do in an Alternator? Diodes are used within the process of rectification, or changing an AC flow into DC. This is possible because diodes only allow current to flow in one direction. AC, or alternating current, includes current flowing both forward and backward, creating a full sine wave.
Frequently Asked Questions on p-n Junction
What happens when the battery voltage is increased in a forward-biased p-n junction?
The current through the junction increases when the battery voltage is increased in a forward-biased p-n junction.
What happens when a p-n junction is reverse biased?
The holes and electrons tend to move away from the junction.
The two breakdown mechanisms are Zener breakdown and Avalanche breakdown
Static resistance of a diode is defined as the ratio of the DC voltage applied across the diode to the DC current flowing through the diode.
Dynamic resistance of a diode is defined as the ratio of change in voltage to the change in current.
Reverse resistance is defined as the resistance offered by the p-n junction diode when it is reverse biased.
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