Alright, with an n-Channel MOSFET, you apply positive voltage to the Gate, to saturate the gate. This voltage is known as Vgs(th) on the datasheets.
The IRLB8721PBF n-Channel MOSFET has a Vgs(th) voltage rating of 1.8Vdc. That means the gate needs at least 1.8Vdc to allow voltage and current to flow from the Drain to the Source. Simple right? I want someone to explain to me, using the NPN BJT Transistor I'm going to specifically list, how the same thing happens, using the data in the data sheet I'm going to list. After I explain my understanding how an n-Channel MOSFET works, and how it's wired up in a very simple circuit.
So here's my drawing I just did for the n-Channel MOSFET I've listed, used as a Solid State Relay (SSR) to protect the switch. I must've worked with this particular n-Channel MOSFET several times, doing all kinds of things, so hopefully I got the circuit correct.
Feel free to correct me if I'm wrong, but I'm pretty sure I'm not, especially since I have videos to show me dropping the gate current down to as low at 20uA in circuits to control mains voltage, and stuff with my Arduino Uno I got for $3 from China. So.. here it is.
Now.. Let's talk about the NPN BJT Transistor. I would like to know what the turn on, or forward biasing voltage is called in the specifications on the data sheet for the KSP05TA NPN BJT Transistor.
Where Vgs(th) is the gate voltage, or gate source voltage to turn on the n-Channel MOSFET, and the _______________ is the voltage to turn on the KSP05TA NPN BJT Transistor.
Where Id is the MAX drain current going from the Drain & Source on the n-Channel MOSFET, the ______________ is the same thing on the KSP05TA NPN BJT Transistor.
I will need to protect my (uC) micro controller by connecting a pull down resistor between the gate & source on the n-Channel MOSFET, is the same to connect a pull down resistor between the ___________ and ____________ on the KSP05TA NPN BJT Transistor.
Now I'll try to guess. This doesn't mean I don't need an answer to my three questions I've asked. I'm going to show effort, because god only knows, I've searched online, and watched several videos showing how to wire these NPN BJT Transistors up, nobody explains what the data in the datasheet does or whatever.
So.. here it goes. I'm going to try give my hypothesis, as to how these NPN BJT Transistors work.
The Vebo (Emitter Base Voltage) is the positive voltage to be applied to the Base, to turn the NPN BJT Transistor on, connecting ground to Emitter.
The Vceo (Collector Emitter Voltage) is the Maximum voltage I can have as my load (Collector to Emitter).
The Ic (Collector current) is the Maximum current I can switch. (Collector to Emitter).
Is that correct? If not, please explain.
This is a top secret circuit I'm working on.. It using the NPN BJT Transistor I've mentioned.
Here's my top secret drawing, I'm trying to learn about Logic Gates, and stuff before I tackle Bit counters, and frequency dividers, etc. Which I've posted earlier about, but not ready to tackle yet. Learning the basics first. So here's my top secret drawing. It drives an LED, for starters. I'm sure I can use an n-Channel MOSFET to drive other things. This type of circuit is useful for (backup power supplies, and a fun Laser Tripwire). But I'm sure it can be used for much more technical things, like CPU chips, etc.
The IRLB8721PBF n-Channel MOSFET has a Vgs(th) voltage rating of 1.8Vdc. That means the gate needs at least 1.8Vdc to allow voltage and current to flow from the Drain to the Source. Simple right? I want someone to explain to me, using the NPN BJT Transistor I'm going to specifically list, how the same thing happens, using the data in the data sheet I'm going to list. After I explain my understanding how an n-Channel MOSFET works, and how it's wired up in a very simple circuit.
So here's my drawing I just did for the n-Channel MOSFET I've listed, used as a Solid State Relay (SSR) to protect the switch. I must've worked with this particular n-Channel MOSFET several times, doing all kinds of things, so hopefully I got the circuit correct.
Feel free to correct me if I'm wrong, but I'm pretty sure I'm not, especially since I have videos to show me dropping the gate current down to as low at 20uA in circuits to control mains voltage, and stuff with my Arduino Uno I got for $3 from China. So.. here it is.
Now.. Let's talk about the NPN BJT Transistor. I would like to know what the turn on, or forward biasing voltage is called in the specifications on the data sheet for the KSP05TA NPN BJT Transistor.
Where Vgs(th) is the gate voltage, or gate source voltage to turn on the n-Channel MOSFET, and the _______________ is the voltage to turn on the KSP05TA NPN BJT Transistor.
Where Id is the MAX drain current going from the Drain & Source on the n-Channel MOSFET, the ______________ is the same thing on the KSP05TA NPN BJT Transistor.
I will need to protect my (uC) micro controller by connecting a pull down resistor between the gate & source on the n-Channel MOSFET, is the same to connect a pull down resistor between the ___________ and ____________ on the KSP05TA NPN BJT Transistor.
Now I'll try to guess. This doesn't mean I don't need an answer to my three questions I've asked. I'm going to show effort, because god only knows, I've searched online, and watched several videos showing how to wire these NPN BJT Transistors up, nobody explains what the data in the datasheet does or whatever.
So.. here it goes. I'm going to try give my hypothesis, as to how these NPN BJT Transistors work.
The Vebo (Emitter Base Voltage) is the positive voltage to be applied to the Base, to turn the NPN BJT Transistor on, connecting ground to Emitter.
The Vceo (Collector Emitter Voltage) is the Maximum voltage I can have as my load (Collector to Emitter).
The Ic (Collector current) is the Maximum current I can switch. (Collector to Emitter).
Is that correct? If not, please explain.
This is a top secret circuit I'm working on.. It using the NPN BJT Transistor I've mentioned.
Here's my top secret drawing, I'm trying to learn about Logic Gates, and stuff before I tackle Bit counters, and frequency dividers, etc. Which I've posted earlier about, but not ready to tackle yet. Learning the basics first. So here's my top secret drawing. It drives an LED, for starters. I'm sure I can use an n-Channel MOSFET to drive other things. This type of circuit is useful for (backup power supplies, and a fun Laser Tripwire). But I'm sure it can be used for much more technical things, like CPU chips, etc.