Wide range linear controller using junction field effect...

Details Wide range linear controller using junction field effect... Wide range linear controller using junction field effect...

H - Electricity

03

K

328/202, 328/79,

H03K 5/08 (2006.01) H03G 1/00 (2006.01) H03H 11/24 (2006.01)

Patent

CA 1260076

Abstract A controller includes a pair of field-effect transistors interconnected so that their drain-to-source paths are electrically in a parallel circuit combination. The field-effect transistors have similar characteristics except that their minimum drain-to-source impedances are different from each other. An equivalent impedance of the parallel circuit combination is controlled by the gate-to- source voltages of the field-effect transistors. An input signal having a wide range is applied to a control circuit for producing concurrently different magnitude control signals, each of which is applied across the gate-to-source input of a separate one of the field-effect transistors for controlling its drain-to-source impedance over its most linear operating range.

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