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If electronic circuits react incorrectly, that can have in principle three causes:
- Draft error,
- physical errors (there are permanent, e.g. when damage by wear, or unique, e.g. by violent radiation effect)
- Input error (due to other errors disturbed inputs or operating errors).
One divides physical errors with digital circuits into several classes.
- Stucco RK Faults are errors, in the case of which gates at an entrance or exit to a certain value feststecken. Depending upon the value one differentiates Stuck-at-1 or Stuck-at-0-Fehler.
- Bridging Faults short-circuits between two lines are called. From this new functions of the gates concerned develop. Input output Brindging means that entrances and exits of the circuit are connected (feedback). This leads to time-dependent behavior, e.g. to reciprocating circuits.
- Particularly with transistors one knows stucco off errors (transistor always closes), stucco on errors (transistor always leads) and gate Delay Faults as well as Path Delay Faults, which cause delays during signal processing.
By analysis of the circuit one tries to sketch as effective a test scenarios as possible, in order to recognize as much as possible errors at as small an expenditure as possible from the beginning. In addition one can sketch particularly critical circuits accordingly errortolerantly.
See also
Error, program error, repair, damage, disturbance
Literature
- Adolf Renardy, error tracing by signal tracing and signal supply, Franzis publishing house, Munich, 1953
- Dietmar Benda, methodical error tracing in the industrial electronics. Like errors in electronic devices and plants by determined systematics and logic to be located, 2. again treatment know and erw. Aufl. Franzis publishing house, Munich 1979
- Josef ice ELT, error tracing in electrical system and devices, Pflaum, Munich 1984
- Bernhard Pabst, Fehlersuche in transistor fishbones, Reprint of the expenditure for original of 1966, radio publishing house Bernhard Hein e.K., Dessau 2001, ISBN 3963124027
Articles in category "Error in electronic circuits"
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