2, the reference voltage is a stable reference voltage that is theoretically not affected by any external factors, and use this voltage to compare with other voltages orIs calculated.
3, this is a standard voltage, usually by the chip output a very stable voltage, the need to regulate the output voltage through the circuit and this voltage comparison, the chip will know the output is too high or too low, and finally adjust the output voltage and the voltage is consistent, to maintain the output voltage stability.
4, that is, the meaning of reference/reference, refers to the reference voltage. The reference voltage is the voltage value on the sensor under the condition of operating current (100μA) when the sensor is placed in a temperature field of 0 ° C (ice-water mixture). It's actually zero point voltage.
The function of the reference voltage is to provide an accurate reference voltage. It is usually used for simulation functions and has nothing to do with logic functions. For example, the reference voltage of A/D converter is 5V, so when the input signal voltage is equal to 2V, the digital output of A/D converter is 80% of full scale.
The reference voltage is similar to the reference power supply for board level circuit design, and the internal reference voltage provides a stable reference voltage for other circuits on the chip. This reference voltage has toSeek high, good stability, small temperature drift.
1, this is a standard voltage, usually by the chip output a very stable voltage, the need to regulate the output voltage through the circuit and this voltage comparison, the chip will know the output is too high or too low, and finally adjust the output voltage and the voltage is consistent, to maintain the output voltage stability.
2, the role of the reference voltage is to provide an accurate reference voltage. It is usually used for simulation functions and has nothing to do with logic functions. For example, the reference voltage of A/D converter is 5V, so when the input signal voltage is equal to 2V, the digital output of A/D converter is 80% of full scale.
3, the stability of this number is crucial, because it offsets the effect of temperature changes on the Vbe, so that the circuit can maintain a constant reference voltage in different temperature environments. As a result, 25V became the magic voltage in circuit design, providing a solid foundation for the precise work of electronic devicesThe foundation of...
4, the temperature coefficients of the two cancel each other to achieve a temperature-independent voltage reference, about 25V. Because its reference voltage is similar to the band gap voltage of silicon, it is called the band gap reference. The actual use of bandgap voltage is not. Now some Bandgap structure output voltage and bandgap voltage is not consistent.
5, of course not, must ensure the input pressure difference, lm317 can work normally, the reference voltage is its own output, not the input, 3v pressure difference is the basic condition for stable work, if the output current is large, do a good job of heat dissipation.
Under normal circumstances, it should be close to 0Ⅴ, if there is a deviation, the sound quality changes little. The main effect is the speaker. Power tube pairing inconsistency caused.
Generally speaking, 0.05~0.1 volts will not be a problem, more than 0.1 volts is best to check and adjust, replace the differential circuit of the transistor, pairing. If the power amplifier board or signal board has a small potentiometer with a midpoint, it can be adjusted. When the midpoint is too large, there is a problem, and it needs to be repaired.
to the cpuNormal voltage 5 volts, above and below is abnormal.
Is abnormal. According to the relevant public information query results show that the power amplifier base voltage of about 6 volts indicates that it is abnormal, silicon is normal for 0.6-0.8 volts, and germanium is generally normal for 0.2-0.3v. Power amplifier pre-level is a physics term.
In theory, the power amplifier midpoint voltage should be 0 volts, but in fact, the power amplifier midpoint voltage is difficult to adjust to 0 volts, can only be close to 0 volts, usually optimized design of the power amplifier circuit, where the point voltage is below 50mv, the closer to 0 volts its parameters are higher.
The previous stage is lostOut of 0.8 DC voltage is normal. According to the query of relevant public information shows: 0.6-5 generally has no impact on the speaker, the output of the high-power amplifier may have several volts of voltage, which is a normal phenomenon, as long as there is no hum when static, the problem is not big.
The reference voltage is a theoretically stable reference voltage that is not affected by any external factors and is compared or calculated with other voltages. The reference source of the power supply is to provide a stable, standard voltage source. Similar to the reference power supply for board level circuit design, the internal reference voltage of the chip provides a stable reference voltage for the other circuits of the chip. This reference voltage requirements are high, good stability, small temperature drift. The reference voltage of the switching power supply can be determined by measuring the output voltage of the power supplyAgreed. According to the query of relevant public information, the output voltage of the power supply should be maintained within the allowable limit, if it exceeds this range, it is called the reference voltage failure. The most classic band gap reference is the sum of a voltage that is proportional to temperature and a voltage that is inversely proportional to temperature, and the temperature coefficients of the two cancel each other to achieve a voltage reference that is independent of temperature, about 25V. Because its reference voltage is similar to the band gap voltage of silicon, soThis is called a bandgap reference. The voltage of the fourth generation DDR4 memory is 1.2V, which is strictly specified by the manufacturer. DDR4 memory does not have low voltage products. All product voltages are standard. Only DDR3 has standard voltage and low voltage, ddr3l is 35v and standard DDR3 is 5V. However, it will lead to the heating problem of the CPU, and the CPU heating will change the chemical medium of the CPU and reduce the life of the CPU. Therefore, 25V became the magic voltage in circuit design, providing a solid basis for the precise work of electronic devicesBase. Overall, the choice of 25V reference voltage is not a coincidence, but the result of careful consideration by circuit designers to ensure that the circuit's performance is always maintained at the optimal state under temperature changes. V is the nominal voltage of the alkaline battery, 2V is the nominal voltage of the rechargeable battery, this is the nominal voltage. The reference voltage is a theoretically stable reference voltage that is not affected by any external factors and is compared or calculated with other voltages. Why are most commonly used voltage reference chips 1.2V