Dual-mode amplifier

Details Dual-mode amplifier Dual-mode amplifier

1980-04-03

1981-09-08

Pellinen, A. D.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

315411, 323288, H03K 1764

Patent

active

042887380

ABSTRACT:
A circuit, including a dual-mode amplifier, for producing a controlled current through an inductance; in particular, the inductive yoke of a cathode-ray tube electromagnetic deflection system. A diode coupled to a fly-back capacitor operates automatically to connect the capacitor in parallel resonant connection with the yoke whenever the voltage induced in the yoke exceeds a predetermined value, thereby switching the circuit from a linear mode to a non-linear mode. In a repetitive beam-sweeping environment, the circuit operates in the linear mode during forward scan time and in the non-linear mode during reverse retrace time. In the more general case, the circuit switches from linear operation to non-linear operation whenever the rate of change of a single input signal exceeds a predetermined design rate.

REFERENCES:
patent: 3294981 (1966-12-01), Bose
patent: 3906333 (1975-09-01), Kalmanash
patent: 3909701 (1975-09-01), Waehner
patent: 3935529 (1976-01-01), Kalmanash et al.

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