US3967187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current limiting of noise diodes
Assignee: Solitron Devices Inc
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Filing: 1974-08-09
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Granted: 1976-06-29
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Expires: 1994-08-09
Abstract
Abstract A current limiting circuit for a diode noise source improving noise output stability with changes in ambient operating temperature and variations in supply voltage.
Inventors
- 👤 Lon E. Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:11
CPC Classifications
H; H03; H03B; H03B29/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
80 words
A random noise generator comprising: a semiconductor noise generating element; a time delay circuit for delivery of the output of said element at a desired frequency, impedance match; and a FET connected to a power source via its drain terminal and to said element via its source terminal for controlling current to said element, said FET having a single resistor tapped between said source terminal and a gate terminal thereof to control variations in drain current over a temperature range.
Claim 2
Dependent Claim
80 words
A random noise generator comprising: a semiconductor noise generating element; a time delay circuit for delivery of the output of said element at a desired frequency, impedance match; and a FET connected to a power source via its drain terminal and to said element via its source terminal for controlling current to said element, said FET having a single resistor tapped between said source terminal and a gate terminal thereof to control variations in drain current over a temperature range.
Claim 3
Dependent Claim
12 words
The structure of claim 1 wherein said resistor is a variable resistor.
References Cited (Backward Citations)
US3428884A
Cited
US3508084A
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US3518454A
Cited
US3535616A
Cited
US3547127A
Cited
US3579091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |