Fail-safe solid state logic

Details Fail-safe solid state logic Fail-safe solid state logic

1977-03-18

1978-06-27

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307291, 307296A, 307218, 328138, H02H 720

Patent

active

040977641

ABSTRACT:
A fail-safe solid state logic system based on the use of an AC input signal of one type, and a DC input which causes a logical gate to convert the AC input signal to a totally different AC output signal; that is, to one adapted to be received by a vital driver or the like, which is tuned to accept only that different AC output signal and no other. Accordingly, the failures which are most likely to occur, namely, shorts from input to output or failure to toggle, result in the AC signal frequency not being changed and as a consequence, the system fails safe.

REFERENCES:
patent: 3226648 (1965-12-01), Davidson
patent: 3328702 (1967-06-01), Brown
patent: 3721833 (1973-03-01), Kramer
patent: 3760580 (1973-09-01), Fujita
patent: 3909632 (1975-09-01), Sibley

Affiliated with

Also associated with

Rating

Fail-safe solid state logic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fail-safe solid state logic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fail-safe solid state logic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2306684