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What are metalloids in transistor radios used for?
The metalloids is combined in transistor radios to make them of high quality.
How do vfd's change the AC to dc current and back into AC?
Variable frequency drives use a rectifier to "chop off" the top part of the ac wave, then use capacitors to "fill in" the gaps in the voltage, making a "near dc" power. They use IGBTs, a fancy term for a high speed, high current transistor, or electronic switch, to pulse the "near dc" power out to the motor, in a pattern that appears like ac to the motor.
What is the difference between jfet and mosfet?
1-BJT is bipolar while JFET is unipolar. 2-BJT has low input impedence while JFET has high input impedence. 3-JFET has low power discipation as compared to BJT. 4-JFET has low noise as compared to BJT. 5-BJT is current controlled while JFET is voltage controlled. 6-JFET is mostly used in digital circuits.
Why class AB amplifier have high efficiency?
A class AB amplifier of the complementary transistor type has two transistors in series. Both transistors can change the resistance. If the upper transistor, a npn type, has minimum resistance and the lower transistor, a pnp type, has maximum resistance, the output voltage is near the supply voltage. One transistor is totally open and has zero current, the other transistor is totally closed and has zero voltage. Working together both transistors can set the output to any voltage between 0 and supply voltage. The class AB efficiency maximum is 100% minus the bias-power, see for example D. M. Snider, "A Theoretical Analysis and Experimental Confirmation of the Optimally Loaded and Overdriven RF Power Amplifier", 1966. Today the overdriven class AB amps are called class D.
Why h parameter are not used for transistor mode at high frequency?
finding h parameters involves open and short circuits which is difficult to obtain at high frequencies due to stray inductance and capacitance
Is BJT used for high speed power application?
Yes
Transistor 603 12F?
a 603 12F high current power, multi-emitter transistor.
What is the advantage of saturation mode of transistor?
The advantage of saturation mode in a transistor, particularly in bipolar junction transistors (BJTs), is that it allows the transistor to act as a closed switch, enabling maximum current flow from collector to emitter with minimal voltage drop. This results in high efficiency and power delivery in switching applications, such as in digital circuits and power amplification. Additionally, in saturation mode, the transistor can quickly turn on and off, making it ideal for high-speed switching operations.
What is the different of logic families?
Logic families refer to groups of digital logic circuits that share similar characteristics, such as voltage levels, power consumption, and speed. Common logic families include TTL (Transistor-Transistor Logic), CMOS (Complementary Metal-Oxide-Semiconductor), and ECL (Emitter-Coupled Logic), each offering trade-offs between speed, power efficiency, and complexity. TTL is known for its robustness and moderate speed, CMOS boasts low power consumption and high density, while ECL provides the fastest switching speeds at the cost of higher power use. The choice of logic family depends on the specific requirements of an application, such as speed, power consumption, and integration density.
What are the advantages and disadvantages of N MOS circuits as compared to TTL?
TTL stands for Transistor-Transistor-Logic. N-MOS is a type of a metal oxide semiconductor technology. TTL is faster, but generally uses more power. MOS based devices are slower, they and they use less power. Speed is an issue when dealing with high speed data processing.
What does x denote in 74x151 ic?
It's the "family" the device belongs to. The 74151 is the original Transistor-Transistor Logic (TTL) device. The 74L151 is the low-power ("L") version. Slower than the original TTL family. Others are: S - Schottky (high-speed) LS - low-power high speed. About equivalent in speed to the original TTL, but lower power. ALS advanced low-power high-speed C - Complementary Metal-Oxide Silicon, which uses a different technology (CMOS rather than bipolar transistors), but conforms to the "74"-series logic functions. Much lower power consumption than TTL devices described above.
What is meaning of bfw11 in fet?
B=sillicon f=fet w=used in high frequency application 11=gain of transistor
What is power transistor briefly?
One capable of being used at power rating of greater than about 10 watts, and generally requiring some means of cooling
What is mean SL in SL100 transistor?
S stands for slew and L stands for low frequency... and 100 is the gain of the transistor
Where is the 1993 delta 88 high speed blower relay location?
Sorry but it is not a relay. It is a power transistor voltage regulator board located on the center area of the firewall and controlled by the Climate control computor. I have an 89 with low speed blower working only. I tapped into the module wire connection to a small switch I installed under the dash for high speed operations.
Why is a Junction transistor so named?
In a transistor a current from low resistance input circuit is transferred to a high resistance output circuit with almost unchanged magnitude. This results in a power gain. Infact the name 'transistor' is coined from 'transfer resistor'
Why is 13003 used in chargers?
It's a good high voltage power transistor designed with small SMPS in mind.
