101 resistor

transistor. (as in push-pull) when the bottom transistor is off, the output is high. There is no way to output a high level, you want to output a high level, must be externally connected with a pull-up resistor (pull-up resistor). The Open-drain is only capable of leakage currents (sink current), and a pull-up resistor is required if you want to set the current.

through the resistor to the right transistor base, the right transistor conduction, the right output terminal connected to the ground, output "0".　　The circuit can see that the open collector is unable to output high level, if you want to output high level can be added to the output of the pull-up resistor. Thus, the open collector output can be used as a level shift and pull the pull-up

Pull-up resistance: 1. When the TTL circuit is used to drive the COMs circuit, if the high level output by the TTL circuit is lower than the lowest high level (generally 3.5 V) of the COMs circuit, the pulling resistance should be connected at the TTL output end, to increase the output height. 2. Open resistor must be added to the OC door circuit before it can be used. 3. In order to increase the drive capability of the output pin, some single-chip mi

Single chip microcomputer pull-up resistor actionAdding a pull resistor or drop-down resistor is to add a resistor from the power v+ or V-end to the output of the integrated circuit device, i.e. solder a resistor directly on the device's output pin to the power v+ or V-end.1

Original Address-Https://www.arduino.cc/en/Tutorial/BlinkFlashingThis example shows the simplest thing you can do with a Arduino/genuino board: blinking The LEDs on the board.Hardware requirementsArduino Development Board LED (not necessary) 220 Ohm resistor (not required)CircuitThis routine uses LEDs on most of the Arduino/genuino development boards. This led lamp is connected to the digital pin, and it has different pin numbers on the various models

The following describes the structure of the open-drain output and push-pull output:Push-Pull output: Can output high, low level, connect digital devices;Open-Drain output: The output is equivalent to a transistor collector. A pull-up resistor is required to obtain a high level state. Suitable for the current-type drive, its ability to absorb current is relatively strong (generally 20ma or less).Push-pull structure is generally referred to as two tran

and drop-down Resistors of stm32 are specified in the Data Manual, which is generally 30 ~ 50 k. The typical value is 40 K. On the Internet, I can see some questions about resistance pull-up and drop-down. The pull-up and drop-down operations at the input end are very simple but also very important. The purpose of resistance is described below: 1. Resistance:------- The connection resistance is used to prevent the input from being suspended.------- Weaken the interference of external current o

Push-pull, open-leak, strong pull-up, weak pull-up, strong pull-down, weak pull-down output push-pull output: can output high, low level, connected to digital devices; the push-pull structure generally refers to the two transistors being controlled by the two complementary signals, which always end when one transistor is turned on. Open-drain output: the output end is equivalent to the collector of the transistor. To obtain a high-level state, the output end must be able to pull up the

From: http://blog.163.com/dsp_lnint/blog/static/1031674342008111695620377/#comment=fks_082065085095085071086080084095085086082066082081082064080 Push-pull output: outputs high and low levels and connects to digital devices. A push-pull structure generally means that two transistors are controlled by two complementary signals, which always end when one transistor is turned on. Open-drain output: the output end is equivalent to the collector of the transistor. To obtain a high-level state, the ou

Copy codeThe Code is as follows: @ Echo off Echo repairs IE Echo ===================================================== ======== Echo the progress of this process is 100% off with your computer configuration Echo system: the faster your computer is, the faster the process is. ^ _ ^ Echo if you find that the program is stuck, close the program immediately. Echo, restart the system, and try again. Echo if your system has enabled/disabled the program sound, please The Echo will be muted immediately.

Copy Code code as follows: @Echo off Echo Fix IE Echo ============================================== Echo the progress of this process is 100% off your computer configuration. The Echo system, the faster your computer is, the faster the process will be. ^^_^^ Echo If you find the program's progress stuck, please close this process immediately Echo sequence, reboot the system, try again. Echo If your system has the sound of a startup/shutdown program, please Echo immediately mute, ot

Original Address-Https://www.arduino.cc/en/Tutorial/BlinkFlashingThis example shows the simplest thing you can do with a Arduino/genuino board: blinking The LEDs on the board.Hardware requirementsArduino Development Board LED (not necessary) 220 Ohm resistor (not required)CircuitThis routine uses LEDs on most of the Arduino/genuino development boards. This led lamp is connected to the digital pin, and it has different pin numbers on the various models

Basic knowledge of circuit design Basic knowledge of circuit design (I)Basic knowledge of circuit design (1)-ResistanceThe blocking effect of the conductive body on the current is called resistance, expressed by the symbol R, in the unit of Ohm, qianou, and zhaoou, respectively expressed by Ω, kΩ, and MΩ.I. Method for naming resistance models:The domestic resistor model consists of four parts (not applicable to sensitive resistors)T

is very small, so that the RC constant is very small, and the transformation speed is very fast. Therefore, the push-pull output level not only improves the load capacity of the circuit, but also increases the switching speed. Open-drain output: the output end is equivalent to the collector of the transistor. To obtain a high-level state, the output end must be able to pull up the resistor. It is suitable for current-type drive and has a strong abili

How to properly use Profibus plugs and termination resistors (2016-04-14 15:18:33) reproduced Tags:profibus plug Termination resistor DP plug Plug and termination resistors play a very important role in Profibus communication, they are very simple to use and do not have many complicated settings, but because of their simplicity, many engineers ignore the details in their use, causing many communication problems.

tested for the 2nd time, the discharge must be done first. For 1000μf below the resistance, can be directly short-circuit discharge, more than two feet can be inserted into the wet sponge, a few minutes after the short-circuit discharge. The larger the capacitance capacity, the longer the discharge time is required.Capacitance in series and in parallel:The series of capacitors (Fig. 10) and parallel (Fig. 11) are used to change the capacitance on the line. Contrary to resistance: C1, C2C1Capac

Resistance pull-up and drop-down problems On the Internet, I can see some questions about resistance pull-up and drop-down. The pull-up and drop-down operations at the input end are very simple but also very important. The purpose of resistance is described below:1. Resistance:------- The connection resistance is used to prevent the input from being suspended.------- Weaken the interference of external current on the chip------- Protection of protection diodes in CMOS, the general curre

high-level, the output of the powerThe flow will be the lower door from the power supply through the VT3 pull-out. In this way, the output high and low, VT3 and VT5 all the way willAlternating operation, which reduces power consumption and increases the capacity of each tube. And because no matter where you go, the pipe on resistanceare very small, so that the RC constant is small and the transition is fast. Therefore, the push-pull output stage improves the load capacity of the circuit andHigh

of the clamp circuit, so that the input and output does not exceed the specified powerPressure.2) The power input of the chip is coupled with a decoupling circuit to prevent a momentary high voltage at the VDD end. 3) Add a wire-flow resistor between the VDD and the external supply, even if a large current does not allow it to go in. 4) When the system is powered by several power supplies, the switch must be in the following order: on, first openCOMs

1 reviewsI/O port is a very common peripheral in the microcontroller, STM32 I/O port has 8 states, although the use of the process has not encountered any problems, but has not been very clear, so here is a summary (actually the concept is also and STM8 and other microcontroller, understand the 8 state, It also basically understands most I/O ports).2 colorsWe can see the following code in "Stm32f10x_gpio.h" in the library file: typedef enum { GPIO _mode_ain = 0x0,