Zener Diode Applications. Chapter 3. Overview. Zener Diodes Zener characteristics . Zener Diodes. Diode types Rectifier Zener . Lower Vz due to more heavily doped. Zener diode operates in the breakdown region. Zener Diode Basics. Made of silicon pn junction
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Lower Vz due to
more heavily doped
Zener diode operates in the breakdown region
Range at which voltage is maintained while current is changing
Minimum current required to operate in breakdown region
Maximum current the diode can handle
In ideal model we assume Z is zero
fmin = 679 MKhz
fmax = 1.22 MHz
Recombining free electrons with holes releases energy heat and light
The process in which photons emit visible light is called electroluminescent
The color of the LED depends on the added impurity (different wavelengths)
If the color is Invisible InfraredLight-emitting Diodes (LED)
General radiation pattern
of a typical LED.
Max Ie can be obtaine
d from IF vs Ie graph
If H = 5, what is I?
Note how the diode is
Places in the circuit