[Photo] Do you know the price of the signal generator? What is the self-load stability of the DC stabilized power supply?
Release time: 2019-09-20
What is the self-load stability of the DC stabilized power supply ? In this regard, Shijiazhuang Shuying Instrument Co., Ltd. knows or understands the relevant situation and analyzes it, so that you can know more about the industry in addition to knowing Shijiazhuang Shuying Instrument Co., Ltd.!
I have already introduced the signal generator to everyone before, presumably everyone has a certain understanding of the signal generator, so after understanding the problem comes, the issue of the price of the signal generator has been put on the agenda again, Xiao Today, I will take everyone to understand the price of the signal generator. Come and listen to it!
A signal generator is a device that can provide electrical signals of various frequencies, waveforms, and output levels. When measuring the amplitude characteristics, frequency characteristics, transmission characteristics and other electrical parameters of various telecommunication systems or telecommunications equipment, and when measuring the characteristics and parameters of components, it is used as a signal source or excitation source for testing.
Shijiazhuang Shuying Instrument Co., Ltd. is a company specializing in the sales of signal generators (former Shijiazhuang Radio No. 4 Factory). With advanced equipment and excellent service, it has been well received in the industry. It provides the latest signal generator quotation consultation. Details are available Contact us or keep an eye on our website! The number of British instruments is stable. Do you know the price of the signal generator ?
： Many people checked :
This refers to the relative change in the output voltage caused when the output current changes between the rated value I and zero due to changes in the load while all other influences remain the same. The symbol of load stability is sl. From the definition, it can be known that the second section of the voltage stabilization principle is a basic voltage stabilization circuit used to explain the working principle of the linear regulated transistor DC stabilized power supply. El is the electromotive force of the rectifier filter circuit. RI is the equivalent internal resistance of the rectifier filter circuit. U is the unstabilized input voltage. U2 is the output stable voltage. I is the output current. RL is the external load. Magnetic is the overcurrent protection circuit. BG is the adjusting tube, BG2 is the amplifying tube, D is the reference voltage stabilizing tube, and R and R2 are sampling resistors. Such a regulated power supply in which an adjustment stage is connected in series with a load is called a series regulated power supply. Its adjustment function is continuous, so it is also called linear regulated power supply. The adjustment effect is obtained by using the principle of negative feedback: resistors R and R2. The voltage divider is used to take out a part of the fluctuation of the output voltage U and add it to the base stage of the amplifier BG. Therefore, R and R2 support The circuit is called a sampling circuit. The voltage U obtained from R is called a signal generator to make the DC stabilized power supply self-load stability. What does it mean? Sampling voltage. In order to ensure that the sampling voltage only reflects the change of U, and is not affected by the BG base current 1, the current I8 through R and R2 should be much larger than 1HZ in the design. A circuit composed of a silicon zener diode Df and a current limiting resistor R is used to provide a reference voltage, which is equal to the stable voltage Ur of the zener diode D, and is added to the emitter of the amplifier BG. BG plays the role of comparing the sampling voltage Ub and the reference voltage Uz and amplifying the difference. Therefore, the difference UAB called the error amplifier U and Uz is called the error voltage, and UAB = UR is the load resistance of the error amplifier. The control current output from the BG is added to the base of the pass transistor BG to control the base current of the BG, so as to achieve an adjustment effect of maintaining the output voltage to be approximately constant.The above "What does DC stabilized power supply self-load stability mean?" The content introduced is about the introduction of DC stabilized power. After reading our article, if you have more information about DC stabilized power supply, spectrum analyzer and so on, Interested, please click on our product list to view one by one.