Compensation network for pinch off voltage sensitive circuits
US5903177A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1996 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Sep 5, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/245
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A control circuit is provided that can be used to compensate for pinch off voltage sensitive circuits. The control circuit comprises a control FET (26) having a gate (27), a drain (29), and a source (28). The control FET source (28) is connected to a tracking potential (23) through control FET source resistor (31) in series with a constant voltage drop element (32). A control voltage input (22) is applied to the control FET drain (29). A current flow through the control FET (26) results in a transfer function that is substantially linear for linear changes in control voltage input below a voltage pinch off value of the control FET (26). As the voltage control output (23) approaches the pinch off voltage value of the control FET (26), smaller changes in control voltage output (23) are realized for the same change in control voltage input (22).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.