Control circuit and fuel burner incorporating a control circuit

Details Control circuit and fuel burner incorporating a control circuit Control circuit and fuel burner incorporating a control circuit

1981-02-24

1983-08-16

Atkinson, Charles E.

Excavating

364183, 371 62, 431 24, G06F 1100

Patent

active

043995373

ABSTRACT:
A fail-safe supervisory circuit for a microprocessor-controlled fuel burner has a diode pump circuit (C4, C5, D7, D8) triggered by a resettable monostable (R7, T2, R8, C3) responsive to an encoded signal from the microprocessor, to act as a watch-dog timer. A triggered bistable (D1, T1, R2, IC8) provides a RESET signal on power-on or manually. A direct connection from this bistable to the monostable enables the timer circuit until the microprocessor program commences.

REFERENCES:
patent: 2825012 (1958-02-01), Consoliver et al.
patent: 3320440 (1967-05-01), Reed
patent: 3727073 (1973-04-01), Cade
patent: 3786433 (1974-01-01), Notley et al.
patent: 3795800 (1974-03-01), Nimmo
patent: 3919533 (1975-11-01), Ienolf, Jr. et al.
patent: 4280184 (1981-07-01), Weiner et al.
patent: 4394003 (1981-12-01), Kakizawa et al.
Anderson et al., Failure Indicator for Multiple Signals, IBM Technical Disclosure Bulletin, vol. 24, No. 1B, Jun. 1981, pp. 653-654.

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