Printing machine high voltage power system and circuit

Communications: electrical – Systems – Call station

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

101349, 317262R, G08B 2100

Patent

active

039435016

ABSTRACT:
The high D.C. voltage power supply device for the electrodes of an electrostatic ink mist prevention system in rotary printing machines has a conventional full-wave voltage doubling circuit consisting basically of a transformer, plug-in rectifiers, plug-in capacitors and plug-in bleeder resisters. Additional circuitry mounted on an interchangeable printed circuit board comprising exclusively standard solid state switching elements such as an integrated circuit for producing an output pulse when the line voltage goes through zero voltage, which is utilized for turning the high voltage on and off via an SCR firing circuit in addition to illuminating a pilot light via a triac firing circuit. The D.C. high voltage load current is sensed across a resistor, and a resistor potentiometer is provided for setting the high voltage current turn-off trip point. A timing device is provided for re-energizing the solid state circuitry after a preset time interval. The pilot light starts flashing when the triac is fired from the flashing circuit; but as long as a fault is still present, the system turns off again. This is repeated until the fault is cleared away, whereupon the solid state circuitry re-energizes the system automatically.

REFERENCES:
patent: 3011435 (1961-12-01), Jones et al.
patent: 3295441 (1967-01-01), Garnier
patent: 3515064 (1970-06-01), Vlier
patent: 3828674 (1974-08-01), Underwood et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Printing machine high voltage power system and circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Printing machine high voltage power system and circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Printing machine high voltage power system and circuit will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-836328

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.