Browse Prior Art Database

Parametric Oscillator Control

IP.com Disclosure Number: IPCOM000095468D
Original Publication Date: 1964-Jan-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Kleinfelder, WJ: AUTHOR

Abstract

This is a parametric oscillator whose energization is controlled by an auxiliary DC source.

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Parametric Oscillator Control

This is a parametric oscillator whose energization is controlled by an auxiliary DC source.

Conductor 2 is coated with thin magnetic coating 4 and is encompassed by coil 6. Capacitor 8 in combination with coil 6 forms a parametric oscillator which oscillates at a frequency f, if a pump current of frequency 2f superimposed upon a DC bias is applied to conductor 2. DC current source 10 connects via switch 12 and RF choke 14 to coil 6.

When switch 12 is closed, the resulting DC current flow through coil 6 is sufficient to saturate magnetic coating 4. This action prevents the 2f pump current from inducing nonlinear reactance variations in coil 6. As a result, circuit oscillations are selectively prevented or allowed.

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