transistor book

On a, with GPIO direct power to the LED, with high and low level for switch, not reliable. A GPIO is a signal, not a power supply. Moreover, a GPIO can only give poor 5mA or so, take more will burn (I did not burn do not know if it is really going to burn, but the instructions above is written). This is not playing, so I did the following transistor experiment. 2N3904 parameters please click here. This is not recommended, LCM is 200mA, but I only hav

Sina technology news Beijing Time on May 26 news according to the physicist Network reports, the United States and Australia Scientists successfully created the world's smallest transistor-composed of seven atoms in the silicon surface of a "quantum dots ", it marks an important step towards the new era of computing power. Quantum Dots (quantum dot) are nano-sized luminescence crystals, sometimes called "artificial Atoms ". Although this quantum point

Before the method of judging the transistor is used by the memory method, that is, as long as the three-level tube series Let it have a face of their own words, from left to right in turn is E-Class B class C. Until one time in the process of using the transistor circuit in a mistake, found that the pipe is always inexplicable conduction, find a good reason for a long time, finally found that the NPN tube h

that both the base and the collector have power. when both the base electrode and the collector are connected, the current in the circuit reflects the key characteristics of the transistor. Called the transistor action (if the transistor's base current is flowing, the collector current is also flowing), the current is as shown in the figure: We note from the diagram that the base current causes the curre

The circuit 1 uses a minimal number of external parts to raise the maximum output current of a 0.5A buck Switchi Ng-regulator IC to more than 6A. The circuit accommodates input voltages of 60V and delivers output voltages of 3.3, 5, or 12V, depending on your ChoIce of ICS. Figure 2 provides a graph of conversion efficiency for the three standard output voltages, plotted over a range of input V Oltages extending to 60V. The circuit is useful in applications requiring higher input voltage, higher

3.3V-5 V level conversion circuit For example, if the left side is connected to a 3.3 v cmos level, it can be an I/O port of STM32 or FPGA, and the right side output is 5 V to realize conversion from 3 V to 5 V. Analyze the functions of each resistor (the core idea is to hold the transistor's Vbe on at a constant value of about 0.7V ): If there is no R87, then when the US_CH0 high level is directly added to the BE of the transistor, where is the vo

Original address:: Http://www.szhualan.com/pcbtech/sanjiguan. Related web Posts 1.http://www.dzsc.com/data/html/2008-4-3/60806.html Transistor tube type and pin identification is an electronic technology beginner's basic skills, in order to help readers quickly grasp the method of testing, the author summed up four formulas: "Three upside down, find the base pole; Pn Junction, fixed tube type, straight arrow, deflection large; "Let's explain it in

The main difference is that the current flow direction and voltage are different:The PNP pipe flows out from the base and collector after the emission pole flows in, and the pipe flows out from the base and collector.When the PNP tube is working in the amplified area, the voltage is: ue> UB> UC, and the voltage when the PNP tube is working in the amplified area is UC> UB> UEPNP pipe:Emitter current = collector current + baseline currentPipes:Collector current = emission current + base currentPNP

If the circuit diagram, look directly at the following picture: Note: b is the base, C is the collector, E is the emitter If the specific components, the method is as follows: I, judging the transistor base For the NPN transistor, with a black Watch pen to connect an electrode, the red pen is connected to the other two electrodes, if the measurement results of a small resistance, the exchange of the

EMBL Conference, Microfluidics 201423-25 July, Heidelberg, GermanyMicrofluidic chemical transistor based on volume phase transition polymer Because of the similarity between integrating multiple fluidic functions and electronic functions in A signgle device, microfluidics have often been compared with microelectronics. Moreover, most of the microfluidic fabrication techniques rely on photolithography and associated technologies that had be En success

A number of circuits, such as level detectors and AM demodulators, benefit from a rectifier with a low offset voltage. Silicon Diodes Incorporated has an offset of approximately 0.6V and does not work on low-level circuitry. A Schottky diode is a bit better with an offset of approximately 0.4V. A few germanium diodes is still available, but they does not tolerate the temperature range of silicon. Also, you can ' t include a germanium diode in an IC. A superior configuration uses a bipolar

Transistor oscillator circuit Simple, low-cost, transistor oscillator circuit, brief analysis, learning oscillator circuit, in the past found that there are several other products that use this circuit to produce a certain frequency of pulse signal. Interesting. To learn.It can be seen that this circuit is a positive feedback closed loop consisting of two non-gate (inverter) capacitors C1 and C2. T

Figure 1 shows an example of on/off circuitry commonly used in battery-operated devices. The P-channel MOSFET, Q1, serves as a power switch. When you push the on button, S1, Q1 ' s gate goes low. Q1 turns on and supplies battery voltage to the DC-to converter. Depending on the battery voltage in the device, the DC-to converter might convert the voltage either up or down. In either case, it supplies VCC to Theµc. Theµc goes through its power-up software sequence and programs one of its general-pu

transistor is divided into two types of NPN and PNP type, except the power supply polarity of the different working principle is roughly the same. For the NPN tube, it is composed of 2 N-type semiconductor sandwiched a P-type semiconductor, the emission zone and the formation of the PN Junction between the base region is called the transmission junction, and the Collector zone and the base region formed by the PN Junction is called the junction, three

Ansys Totem is a transistor-based ansys Totem 14.1.B2 Linux 64-bit version of the transistor-level power noise and reliability simulation platform for analog-grade power supply noise and reliability, which can be used for analogue, mixed-signal and custom digital designs.The new Ansys Totem 14.1.B2 supports Linux systems:RedHat Enterprise 3SUSE version 9 or later+++++++++++++++++++++++++++++++++++++++++++++

If the measured amplification circuit of several transistors three pin to ground point U1.U2.U3 are the following values, try to determine whether they are silicon tube or germanium tube, is NPN or PnP tube. and determine three electrodes of 1. u1=2.5v. u2=6v. u3=1.8v 2. u1=-6v. U2=-3v. u3=-2.8v I would like to draw up a detailed answer procedure. A: (authoritative release, to find the law) 1, u1=2.5v. u2=6v. u3=1.8v, it is known that the base is the corresponding U1, the emitter is the corres

The following is the structure of the transistor and the various identification methods in the circuit diagram When the multimeter is measured against the transistor (buzzer), we first determine which foot is the B-pole. With a red pen touch any one of the feet, the black pen to contact the other two feet, if you can measure the two groups of similar and less than 1 of the number, indicating that the Red

Digital Multimeter is now a very popular electronic measurement tools, because of its ease of use and accuracy by the electronic technology staff's favorite. However, it is often said that when measuring certain components, it is not as convenient as a pointer multimeter, especially when measuring transistors. In fact, I feel a digital multimeter to measure the transistor more convenient. The inside of the transi