High voltage amplifier

Details High voltage amplifier High voltage amplifier

1986-04-17

1987-09-29

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including particular power supply circuitry

330300, 330311, H03F 304

Patent

active

046971556

ABSTRACT:
An integrated high voltage amplifier output stage capable of being manufactured using low voltage processes comprises a plurality of low-voltage amplifying means (8-21), such as a chain of Darlington transistor pairs, connected between a relatively high voltage source (36) and a current source (34) to provide a common output (35). A potential divider network (1-7) is connected between the high voltage source (36) and a protective high voltage FET (30) for providing low voltage inputs to each of the amplifying means. The input signal to the potential divider network (1-7) is then provided from a cascode stage made up of a low voltage transistor (29) and the high voltage FET (30), all the components being produced by a low voltage process.

REFERENCES:
patent: 3024422 (1962-03-01), Jansson
Leitman et al., "A High Voltage DC Amplifier Stage", Instruments and Experimental Techniques, vol. 19, No. 2, Pt. 1, Mar.-Apr. 1976, pp. 443-445.

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