Malicious
发表于 2025-3-21 18:27:37
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鄙视读作
发表于 2025-3-21 23:38:37
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SOBER
发表于 2025-3-22 04:23:14
The Response of Circuits Containing Passive Components,ut the circuit. The useful signal information is carried by voltages and currents that vary, so we frequently consider the graphs of the magnitudes of these electrical quantities as functions of time. The shape of a given graph is known as the waveform of the voltage or current being studied. In man
暗讽
发表于 2025-3-22 05:01:52
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弯曲的人
发表于 2025-3-22 10:50:40
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合乎习俗
发表于 2025-3-22 13:45:45
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合乎习俗
发表于 2025-3-22 17:36:01
Power Supplies,cuit at a steady or fixed voltage. In the early days of radio and electronics the necessary power was derived from batteries, but the large currents and voltages required for thermionic valves made this source inconvenient. Leclanché type batteries were bulky and expensive, and the lead-acid accumul
显而易见
发表于 2025-3-22 22:53:42
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作茧自缚
发表于 2025-3-23 05:24:53
Amplifiers,arely give sufficient output to actuate an indicating device directly. The electric output from photocells, strain gauges, glass electrodes, thermistors, etc., all need to be increased, i.e. amplified, before the signal can be suitably recorded or indicated. Some intermediate electronic apparatus mu
时间等
发表于 2025-3-23 08:46:03
Oscillators,essive intervals of time. In many cases the waveform of the output voltage is sinusoidal and the oscillator is then called a sinewave generator or harmonic oscillator. Those instruments that produce repetitive waveforms that are square, triangular or sawtooth in shape are called relaxation oscillato