Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition
Patent
1988-11-04
1990-03-13
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Silicon controlled rectifier ignition
315224, H05B 3702
Patent
active
049085514
ABSTRACT:
In full or half DC/AC bridge circuits, the current through the control circuit, by which the power transistors T1,T2 are switched, is derived from the high supply voltage via a resistor. In order to reduce this current and the dissipation associated therewith, the control circuit includes an additional switch, preferably a MOST T4, which is non-conducting when the inverter transistor T3 is conducting and which is conducting when the transistor T3 is non-conducting. The control circuit thus becomes practically currentless. When the control electrode is applied to a suitable voltage, the transistor T4 can be controlled by its source voltage and thus becomes self-controlling. Thus, the circuit can be kept simple. The bridge circuit is particularly suitable for use with gas discharge lamps.
REFERENCES:
A. W. Ludikhuize, "A Versatile 250/300-VIC Process for Analog and Switching Applications", IEEE Transactions on Electronic Devices, vol. ED-33, No. 12, Dec. 1986, pp. 2008-2015.
Ludikhuize Adrianus W.
Schoofs Franciscus A. C. M.
Van Mil Job F. P.
Franzblau Bernard
LaRoche Eugene R.
Pascal Robert J.
U.S. Philips Corporation
LandOfFree
DC/AC bridge 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 DC/AC bridge circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DC/AC bridge circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-52509