Amplifiers – With power or bias voltage supply – For anode
Patent
1978-04-04
1979-05-01
Mullins, James B.
Amplifiers
With power or bias voltage supply
For anode
330207A, 330251, H03F 2100
Patent
active
041526619
ABSTRACT:
A modulation amplifier having an output amplifier element which contains an accumulation choke, a switching tube and a low-pass filter connected in series, with a commutation diode connected to the switching tube is disclosed. The switching tube is controlled by pulse duration-modulated pulses and a semiconductor switch is connected between the switching tube and the pulse duration-modulated pulses. The semiconductor switch comprises two branches, each of which are connected to a different electric potential and each including a controlled semiconductor which acts as a switch, one of the branches being controlled into a conducting state and the other of the branches being controlled into a non-conducting state upon a potential jump in the pulse time-modulated pulses in either the increasing or decreasing directions. The modulation amplifier may further include a control circuit for stabilizing at least one of the potentials, which comprises a switch element as a primary control element which is controlled by an auxiliary pulse duration-modulated signal. A chopper is provided with following filter means for providing an actual value to be fed to the control circuit, which is derived from the output voltage of the filter means.
REFERENCES:
patent: 3384838 (1968-05-01), Knutrud
patent: 3413570 (1968-11-01), Bruene et al.
patent: 3506920 (1970-04-01), Swanson
LICENTIA Patent-Verwaltungs-G.m.b.H.
Mullins James B.
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