Stacked SCR with high holding voltage
US7773356B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2008 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Nov 7, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/713
Abstract
Stacked SCR's are disclosed with a resistor connecting an internal portion of the upper SCR to an internal portion of the lower SCR. The anode of the protective circuit is connected to a contact on a target circuit to be protected and the cathode of the protective circuit is connected to ground or a reference voltage on the target circuit. The anode voltage is directed to the lower SCR via the resistor such that when the voltage on the anode reaches the triggering voltage of the lower SCR, that SCR triggers and that triggering triggers the upper SCR, such that the stacked SCR's both trigger and thereby limit the voltage between the anode and the cathode and thereby protecting the target circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.