vertical amplifier การใช้

• The gain of the vertical amplifier can be adjusted to suit the amplitude of the input voltage.
• In analog instruments, the bandwidth of the oscilloscope is limited by the vertical amplifiers and the CRT or other display subsystem.
• The vertical amplifier generates a potential difference across one pair of plates, giving rise to a vertical electric field through which the electron beam passes.
• Meanwhile, the vertical amplifier is driven by an external voltage ( the vertical input ) that is taken from the circuit or experiment that is being measured.
• For adjusting the delay line capacitors, a high-pressure gas-filled mercury-wetted reed switch created extremely fast-rise pulses which went directly to the later stages of the vertical amplifier.
• Instead, they display only one trace at a time, but switch the later stages of the vertical amplifier between one channel and the other either on alternate sweeps ( ALT mode ) or many times per sweep ( CHOP mode ).
• In vacuum-tube oscilloscopes made by Tektronix, the vertical amplifier's delay line was a long frame, L-shaped for space reasons, that carried several dozen discrete inductors and a corresponding number of low-capacitance adjustable ( " trimmer " ) cylindrical capacitors.
• In dual and multiple-trace oscilloscopes, an internal electronic switch selects the relatively low-level output of one channel's amplifiers and sends it to the following stages of the vertical amplifier, which is only a single channel, so to speak, from that point on.