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Transistor Base Breakdown Voltage. It is designed for high reverse emitter base voltages, and they still fail. If you want the device on with an input voltage between 3 and 500v, you are going to need more circuitry, because at the high voltage, the base current will be too much.
If I cannot find the transistor base voltage in a from www.reddit.com
Normally around 0.65v for most silicon transistors. Since the zener diode is connected to the base of the transistor, 9 v becomes the reference voltage to the transistor base, which is a fixed value. Common, diffused transistors have high doping concentration in the emitter / base area, hence they break down fairly consistently at around 5volt in silicon.
The Voltage That Causes The Transistor To Switch On Is V (Be), Where The Base Voltage Is Higher Than The Emitter Voltage, Typically Around 0.6V.
Transistor voltages three different types of voltages are involved in the description of transistors and transistor circuits. Qnsmax~ eox eoxmax •oxide breakdown: This design allows resistances from 100k to 0 ohms in decade ranges, and i have found that this is quite sufficient for production type testing.
The Breakdown Voltages Of A Transistor Are All A Bad Thing. They Are Voltages That Cause The Transistor To Breakdown Or Cease Normal Operation.
There are two types of breakdown voltages that determine the voltage ratings: Assume that the breakdown voltage of the zener diode is 9 v. Vbe, vce, vcb all of these voltages and their polarities are shown on figure 5 for the npn bjt.
If You Want The Device On With An Input Voltage Between 3 And 500V, You Are Going To Need More Circuitry, Because At The High Voltage, The Base Current Will Be Too Much.
Which is the unregulated dc supply voltage given at the input terminals. That's why the 2sc2878 muting transistor is special. This type of transistor arrangement is not very common due to its unusually high voltage gain
The Breakdown Voltage Depends On The Construction And Doping Of The Layers.
Other words the common base configuration attenuates the input signal. Since the zener diode is connected to the base of the transistor, 9 v becomes the reference voltage to the transistor base, which is a fixed value. This means that, zener diode starts conducting at 9v.
If Voltages Are Fed To The Transistor Exceeding This Rating, The Transistor Can Be Destroyed.
Then the voltage sources are connected to an npn transistor as shown. Collector is normally much less doped and thicker, yielding (much) higher breakdown voltages. The collector is connected to the supply voltage v cc via the load resistor, rl which also acts to limit the maximum current flowing through the device.
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