The EEA series VICKERS amplifier is an important component of the
transmitting device in communication systems. According to the
width of its operating frequency band, it is divided into two
types: narrowband high-frequency power amplifier and broadband
high-frequency power amplifier. Narrowband high-frequency power
amplifier usually uses a frequency selection circuit with frequency
selection filtering function as the output loop, so it is also
called tuned power amplifier or resonant power amplifier; The
output circuit of a broadband high-frequency power amplifier is a
transmission line transformer or other broadband matching circuit,
hence it is also known as a non tuned power amplifier. High
frequency power amplifier is an energy conversion device that
converts the DC energy supplied by the power supply into
high-frequency AC output. It is known in the course of "Low
frequency Electronic Circuit" that amplifiers can be classified
into three working states: A, B, and C according to the different
current conduction angles. The current flow angle of Class A
amplifier is 360o, suitable for small signal low-power
amplification. The current flow angle of Class B amplifier is
approximately equal to 180o; The current flow angle of Class C
amplifier is less than 180o. Both Class B and Class C are suitable
for high-power operation. Class C has the higher output power and
efficiency among the three working states. Most high-frequency
power amplifiers operate in Class C. However, the current waveform
distortion of Class C amplifiers is too large, so they cannot be
used for low-frequency power amplification and can only be used for
resonant power amplification using tuned circuits as loads. Due to
the filtering ability of the tuning circuit, the current and
voltage of the circuit are still very close to sine waveforms with
minimal distortion.
Company profile:
Hefei Mengxing Qianli mechanical and Electrical Equipment Co., Ltd.
is mainly engaged in the sales and wholesale of port machinery,
construction machinery and other complete vehicles and spare parts.
The company's operating brands including: Konecranes, Kalmar, CVs,
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transmission, tanglason filter, man filter, , Cummins, DEUTZ,
Scania, Parker, Eaton, Rexroth, etc.
Our company has independent import and export rights. Facing the
global procurement to ensure that all products with high
performance and price ratio of the distribution. We has always been
adhering to the principle of small profits but quick turnover, As a
business, we always adhere to the integrity and the savings to the
customer, insist on their own service to impress customers. so that
our products sell well at home and abroad and won the unanimous
praise of customers.
Our company's operating philosophy is :Provide the best service and
quality, strivie to satisfy all customers for mutual benefit and
win-win.
