Amplifiers – Bootstrap coupling
Patent
1986-03-11
1987-11-10
Mullins, James B.
Amplifiers
Bootstrap coupling
330267, 330297, H03F 138, H03F 330
Patent
active
047060352
ABSTRACT:
A high-efficiency class-G type amplifier comprises a first transistor (T.sub.1), having its collector connected to a first supply voltage (V.sub.1) via a first diode (D.sub.1) and a second transistor (T.sub.2), connected in series with the first transistor and which has its collector connected to a second supply voltage (V.sub.2). The series arrangement of a second (D.sub.2), a third (D.sub.3) and a fourth diode (D.sub.4) is connected between the bases of the first and the second transistor (T.sub.1, T.sub.2) the fourth diode (D.sub.4) is poled in a direction opposite to that of the second (D.sub.2) and the third diode (D.sub.3). The series arrangement of a first resistor (R.sub.1) and the emitter-collector path of a first current-source transistor (T.sub.4) connects the second supply voltage to the anode of the fourth diode (D.sub.4). The junction point (5) between the first resistor (R.sub.1) and the current-source transistor (T.sub.4) is connected to the output (2) by means of a capacitor (C.sub.1). This arrangment drives the output to a voltage substantially equal to the second supply voltage (V.sub.2).
REFERENCES:
patent: 3961280 (1976-06-01), Sampei
patent: 4001707 (1977-01-01), Iguchi
Dijkmans Eise C.
Philips Norbert J. L.
Raets Joseph G. G.
Franzblau Bernard
Mayer Robert T.
Mullins James B.
U.S. Philips Corporation
LandOfFree
High efficiency amplifier having a bootstrap capacitor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High efficiency amplifier having a bootstrap capacitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High efficiency amplifier having a bootstrap capacitor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1070400