US3732482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two terminal network with negative impedance
Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1972-05-30
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Granted: 1973-05-08
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Expires: 1992-05-30
Abstract
Abstract The present negative impedance two terminal network is embodied by two three terminal amplifiers, for example, one of which is a field effect transistor and the other is a bi-polar transistor, wherein the emitter-collector circuit of the bi-polar transistor and the source-drain circuit of the field effect transistor are connected in series with each other. The two terminals of the network are formed by the base and by the collector of the bipolar transistor. Said collector is also connected to the gate terminal of the field effect transistor. A control voltage source is preferably connected between said base of the bi-polar transistor and the drain terminal of the field effect transistor, whereby said negative impedance is differentially adjustable by varying the control voltage.
Inventors
- 👤 A Marek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:12
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/46; H03H11/52; H03B; H03B7/00; H03B7/02; H03B7/06; H03H11/02; H03H11/40; H03H11/44; H03K; H03K3/00; H03K3/02; H03K3/353; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H04B3/16; H04B3/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
262 words
An electronic circuit arrangement for converting a given direct voltage into another direct output voltage comprising a direct voltage source for providing said given direct voltage, a first three terminal amplifier of a given conductivity type and having first and second channel electrodes as well as a control electrode, a second three terminal amplifier of an opposite conductivity type relative to said given conductivity type and also having first and seocnd channel electrodes as well as a control electrode, means for connecting said amplifier to form a two terminal network having first and second terminals, means for connecting the first channel electrode of said first amplifier to the control electrode of said second amplifier and to said first terminal of said two terminal network, means for connecting the second channel electrode of said first amplifier to the first channel electrode of said second amPlifier, means for connecting the control electrode of said first amplifier to the second terminal of said two terminal network, coil means connected across said first and second terminals of the two terminal network, two output terminals, diode means connected in series between the first terminal of said two terminal network and one of said output terminals, means for connecting the other output terminal to the second terminal of said two terminal network, capacitance means connected across said two output terminals and thus across a series connection including said coil and said diode means, and means for connecting said direct voltage source between the control electrode of said first amplifier and the second channel electrode of said second amplifier.
Claim 2
Dependent Claim
262 words
An electronic circuit arrangement for converting a given direct voltage into another direct output voltage comprising a direct voltage source for providing said given direct voltage, a first three terminal amplifier of a given conductivity type and having first and second channel electrodes as well as a control electrode, a second three terminal amplifier of an opposite conductivity type relative to said given conductivity type and also having first and seocnd channel electrodes as well as a control electrode, means for connecting said amplifier to form a two terminal network having first and second terminals, means for connecting the first channel electrode of said first amplifier to the control electrode of said second amplifier and to said first terminal of said two terminal network, means for connecting the second channel electrode of said first amplifier to the first channel electrode of said second amPlifier, means for connecting the control electrode of said first amplifier to the second terminal of said two terminal network, coil means connected across said first and second terminals of the two terminal network, two output terminals, diode means connected in series between the first terminal of said two terminal network and one of said output terminals, means for connecting the other output terminal to the second terminal of said two terminal network, capacitance means connected across said two output terminals and thus across a series connection including said coil and said diode means, and means for connecting said direct voltage source between the control electrode of said first amplifier and the second channel electrode of said second amplifier.
Claim 3
Dependent Claim
69 words
The electronic circuit arrangement according to claim 1 for converting a given positive direct voltage into a negative direct output voltage, wherein said diode means comprise a Zener diode having a cathode connected to the first terminal of said two terminal network and an anode connected to one end of said capacitance means, whereby all polarities are taken relative to the control electrode of said first three terminal amplifier.
Claim 4
Dependent Claim
69 words
The electronic circuit arrangement according to claim 1 for converting a given negative direct voltage into a positive direct output voltage, wherein said diode means comprise a Zener diode having an anode connected to the first terminal of said two terminal network and a cathode connected to one end of said capacitance means, whereby all polarities are taken relative to the control electrode of said first three terminal amplifier.
Claim 5
Dependent Claim
92 words
The electronic circuit arrangement according to claim 1, wherein said first amplifier is a bi-polar p-n-p transistor having a base, a collector, and an emitter electrode, wherein said second amplifier is a field effect n-channel depletion type transistor having gate, source, and drain terminals, said direct voltage source being connected with its positive pole to said drain terminal of said field effect transistor and with its negative pole to said second terminal of said two terminal network, whereby all polarities are taken relative to the base electrode of said bi-polar p-n-p transistor.
Claim 6
Dependent Claim
92 words
The electronic circuit arrangement according to claim 1, wherein said first amplifier is a bi-polar n-p-n transistor having a base, a collector, and an emitter electrode, wherein said second amplifier is a field effect p-channel depletion type transistor having gate, drain and source terminals, said direct voltage source being connected with its negative pole to said drain terminal of said field effect transistor and with its positive pole to said second terminal of said two terminal network, whereby all polarities are taken relative to the base electrode of said bi-polar n-p-n transistor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |