A. To measure the voltage across the resistor. B. To measure the current through the resistor. C. To increase the resistance of the circuit. D. To decrease the current in the circuit. 相关知识点: 试题来源: 解析 B。解析:Ammeter is used to measure current. Connecting it in series ensure...
I don't know the physical configuration of the electrodes in your example, but the only situation where I could see much benefit to U1 would be if there were some source of current leakage into or out of the circuit, and most such leakage would be concentrated on the electrode tied to t...
In an intended application of the composite integrated circuit to a startup circuit of a switching-mode power supply, the multipurpose resistor serves as startup resistor for limiting the flow of rush current during the startup period of the switching-mode power supply.Keiichi Sekiguchi...
It's always difficult to read the mind of the circuit designer, but it appears that D4 and D5 are there as a last-ditch safety against overvoltage in case the controller gets confused. Depending on their relative current handling capabilities, R5 may also serve as a last-dit...
Note that Rb is not normally installed in the 5V configuration. However, in some cases where the voltage swings rapidly, installing a 1M Ohm resistor in the Rb location and leaving Ca out is preferable (this creates the equivalent of the MegaSquirt®EGO input circuit). If the supply voltage...
. While a decoupling capacitor is utilized after power up in order to maintain a stabilized supply of voltage to a component or network, the bypass capacitor must ensure low impedance for high-frequency signals providing a flow path of the signal through a nearby resistor. In this way, a ...
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WARNING: The wire and metal parts of this product can expose you to lead, a chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. This warning is posted because of the legal requirements of the State of California. For more informat...
Flyback Ground Circuit This circuit consists of: IDDefault ValueInstall?Notes Q1yestransistor, seebelow for advice on selecting an appropriate transistor and base resistor. R1yesbase resistor, seebelow for advice on selecting an appropriate transistor and base resistor. ...
There is no amplification given by this circuit. As a consequence, the voltage gain equates to 1. It is also known as the amplifier for unification gain, buffer & isolation. The input impedance of this circuit is high, so it is used in various circuits. The input signal is used by ...