Electric power conversion systems – Current conversion – Having plural converters for single conversion
Patent
1986-12-02
1988-04-05
Salce, Patrick R.
Electric power conversion systems
Current conversion
Having plural converters for single conversion
363 15, H02M 322
Patent
active
047362863
ABSTRACT:
The invention relates to switching power supplies receiving AC line voltage or DC voltage, particularly for highly efficient regulators operating at high switching frequency. The power supplies contain at least two switches being switched independently of each other; their individual parts can even oscillate autonomously. The energy is stored in at least one capacitor charged by high frequency current pulses. The discharging is independent of the user and also when the output resistance of the line is high so that the output ripple is very low, no minimum load is required and the power failure protection is inherent. The input current of the power supply is uninterrupted. Furthermore, there are no surge currents and any voltage spikes are eliminated; no snubbers are required. EMI/RFI are extremely low. Thyristors and triacs can be employed as they can be turned off by one of the remaining switches. The switching power is actually also an operative power amplifier with an extremely short response time. The load, in this case a loudspeaker with an LC-network connected prior thereto, can be coupled directly to the output of the power supply.
Jones Judson H.
Salce Patrick R.
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