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current amplifier การใช้

ประโยคมือถือ
  • Technological breakthroughs in this period included the high-current amplifier.
  • Voltage amplifiers and current amplifiers have different topologies for best noise characteristics.
  • Figure 3 shows a current amplifier example.
  • So, for example, an op amp ( voltage amplifier ) can be arranged to make a current amplifier instead.
  • These amps ( the so-called " Mark I " ) were apparently just his current amplifier design, re-badged with the Sound City name.
  • This turned the machine from a voltage-to-current amplifier into a voltage-to-voltage amplifier, and they called the new variant an Amplidyne.
  • For example, in an application like this one where current is the output, an h-equivalent two-port is selected because it uses a current amplifier in the output port.
  • Alternatively, other types of buffers exist that implement current amplifiers, or keep track of the state ( i . e . which side drove the bus low ) to prevent latch-up.
  • BJTs can be thought of as voltage-controlled current sources, but are more simply characterized as current-controlled current sources, or current amplifiers, due to the low impedance at the base.
  • Condenser microphones have impedance converter ( current amplifier ) circuitry that requires powering; in addition, the capsule of any non-electret, non-RF condenser microphone requires a polarizing voltage to be applied.
  • On the other hand, for the current amplifier, the output current ? " I " out of the feedback network is applied in parallel and with an opposite direction to the input current " I x ".
  • Although the basic technology for analog computers is usually operational amplifiers ( also called " continuous current amplifiers " because they have no low frequency limitation ), in the 1960s an attempt was made in the French ANALAC computer to use an alternative technology : medium frequency carrier and non dissipative reversible circuits.
  • Early SECMs were constructed solely by individual lab groups from a set of common components including potentiostat ( or bipotentiostat ) and potential programmer, current amplifier, piezoelectric positioner and controller, computer, and UME . Additionally, enhanced spatial resolution afforded by reduced tip size expands the scope of SECM studies to smaller and faster phenomena.