If you want to learn more about using the transistor as an amplifier,electronics-lab.comhas some nice tutorials that go through the three basic BJT amplifier setups. Questions? Do you understand how transistors work now? Or are you still confused? Let me know in the comments below. More T...
There are two basic functions that a transistor can perform. It can either act as a switch or as an amplifier. When acting as a switch, the faucet allows a current to flow through its pipe only when its handle is supplied with a certain amount of voltage. When provided a voltage lesser...
When I first became interested in electronics as a kid, I sat down and figured out how bipolar transistors work. Well, sort of. I read many articles which explained the "Common Base" amplifier. Common-base is the setup which was used by the inventors of the transistor. In those explan...
They can act as amplifiers or as switches. As an amplifier, a transistor can take an input small electric current and provide a larger output electric current. These types of transistors found early applications in hearing aids as the hearing aid translated an incoming sound into a small ...
A transistor is created by using three layers rather than the two layers used in a diode. You can create either an NPN or a PNP sandwich. A transistor can act as a switch or an amplifier. A transistor looks like two diodes back-to-back. You'd imagine that no current could flow throu...
Before we start, it should be noted that we’ll be using the transistor as a simple switch and not as an amplifier. Remember, transistors can operate either as an amplifier or a switch. If you’re using a transistor to amplify a signal, the transistor is said to be operating in the ...
10. THE TRANSISTOR CAN ACT LIKE A SWITCH (OR LIKE A PARTIALLY-ON SWITCH.) 11. CONNECT A POWER SUPPLY OR BATTERY FROM COLLECTOR TO EMITTER IN ORDER TO CREATE A BIG FLOW OF CHARGE (BUT WHY?) 12. THERE'S ANOTHER DEPLETION ZONE BETWEEN COLLECTOR AND BASE. ...
Transistor: The transistor acts as a booster for the signal, granting it the capability to switch on and off the LED. LED: A bright LED lights up the circuit to denote when an RF signal has been discovered. Power source: A battery or energy source delivers the required voltage and current...
They help stabilize the amplifier by removing much of the audio signal above human hearing. The "68K" written on the resistor refers to its resistance value of 68,000 ohms or 68 kilohms. [Bonus info: R2 and R3 also act as 'mixing resistors' and prevent interaction between two simultaneous...
Motor driver is basically a current amplifier which takes a low-current signal from the microcontroller and gives out a proportionally higher current signal which can control and drive a motor. In most cases, a transistor can act as a switch and perform this task which drives the motor in a...