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Class Information
Number: 327/461
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Gating (i.e., switching input to output) > Utilizing three or more electrode solid-state device > Four or more layer device (e.g., thyristor, etc.) > Ac supply > Silicon controlled rectifier (scr) > Plural scr`s > Inverse parallel connection
Description: Subject matter wherein two four or more layer devices are connected across each other, but in opposite directions (i.e., the cathode of one device is joined to the anode of the other device at one common node and vice versa at the other common node).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5872478 |
SCR firing circuit for high voltage control applications |
Feb. 16, 1999 |
| 5861639 |
Breakover-triggered dipole component having a controlled sensitivity |
Jan. 19, 1999 |
| 4827497 |
Electronic trigger switch for maintenance termination unit |
May. 2, 1989 |
| 4797587 |
Triggering method for a thyristor switch |
Jan. 10, 1989 |
| 4742380 |
Switch utilizing solid-state relay |
May. 3, 1988 |
| 4717841 |
Static power switch apparatus |
Jan. 5, 1988 |
| 4703197 |
Phase-controlled power switching circuit |
Oct. 27, 1987 |
| 4695741 |
Switchgear |
Sep. 22, 1987 |
| 4685120 |
Electronic trigger switch for maintenance termination unit |
Aug. 4, 1987 |
| 4658145 |
Solid state relay |
Apr. 14, 1987 |
| 4546424 |
Compensated ramp generating circuit for controlling SCR firing |
Oct. 8, 1985 |
| 4527099 |
Control circuit for gas discharge lamps |
Jul. 2, 1985 |
| 4509089 |
Two-pole overcurrent protection device |
Apr. 2, 1985 |
| 4447849 |
Electromagnetic control circuit |
May. 8, 1984 |
| 4417199 |
Zero crossover triggering circuit for thyristor |
Nov. 22, 1983 |
| 4395637 |
Optically toggled latch-free normally off switch |
Jul. 26, 1983 |
| 4392046 |
Electronic device for arc welding equipment |
Jul. 5, 1983 |
| 4337430 |
Inductive-load power control circuit |
Jun. 29, 1982 |
| 4333048 |
Thyristor control circuits |
Jun. 1, 1982 |
| 4321644 |
Power line transient limiter |
Mar. 23, 1982 |
| 4298810 |
Semiconductor device conduction state detection circuit |
Nov. 3, 1981 |
| 4264786 |
A.C. Signal current transmission trunk circuit for telephone exchange systems |
Apr. 28, 1981 |
| 4260948 |
Method and apparatus for controlling electric valves in AC power supply |
Apr. 7, 1981 |
| 4232234 |
Semiconductor switch circuit |
Nov. 4, 1980 |
| 4211912 |
Induction heating apparatus |
Jul. 8, 1980 |
| 4209683 |
Load responsive trigger interval control for induction heating apparatus having inversely parallel connected thyristors |
Jun. 24, 1980 |
| 4147972 |
Control circuit for an a-c control element |
Apr. 3, 1979 |
| 4143315 |
RMS Transducer and voltage regulating system employing the same |
Mar. 6, 1979 |
| 4121142 |
Full-wave bidirectional DC motor drive circuit |
Oct. 17, 1978 |
| 4092510 |
Multiple-load induction heating cooking apparatus with means for eliminating interference between two or more commutation circuits |
May. 30, 1978 |
| 4074101 |
Induction heating apparatus using a pair of inversely parallel connected gate-controlled switching devices |
Feb. 14, 1978 |
| 4051384 |
Blocking circuit for thyristors |
Sep. 27, 1977 |
| 4049976 |
Solid-state voltage switching circuit |
Sep. 20, 1977 |
| 4021683 |
Electronic switching circuits |
May. 3, 1977 |
| 3946304 |
Phase-initiation control arrangement, particularly for a three-phaseconsumer unit |
Mar. 23, 1976 |
| 3939319 |
High-frequency heating device for variably controlling a high frequency output in a continuous or stepwise manner |
Feb. 17, 1976 |
| 3938032 |
Gate pulse power supply for static alternating current switch |
Feb. 10, 1976 |
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