Driver circuit for printer electromagnet

Details Driver circuit for printer electromagnet Driver circuit for printer electromagnet

1975-12-17

1977-09-13

Duggan, Donovan F.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

323 9, H01H 4732

Patent

active

040486656

ABSTRACT:
A circuit for energizing the electromagnet of the print head of a high speed impact printer, wherein such circuit operates effectively with an unregulated supply voltage by providing energization current pulses whose level and duration are dependent on the present level of such supply voltage.

REFERENCES:
patent: 2841757 (1958-07-01), Shields
patent: 2978630 (1961-04-01), De La Tour
patent: 3078393 (1963-02-01), Winston
patent: 3234453 (1966-02-01), Klees et al.
patent: 3246233 (1966-04-01), Herz
patent: 3293505 (1966-12-01), Miller
patent: 3327201 (1967-06-01), Brantley, Jr.
patent: 3582734 (1971-06-01), Bryden
patent: 3786314 (1974-01-01), Misch
patent: 3896346 (1975-07-01), Ule
patent: 3909681 (1975-09-01), Compari et al.

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