Current limiter for switch=on current of magnetron in microwave oven - has relay to connect in resistor in series with transformer

摘要

The current limiter has a relay connected in series with a resistor. The resistor is shunted by a capacitor. The relay's contact is in series with the high-voltage transformer and shunts a resistor. When the relay is excited, its contacts open, switching the resistor in series with the transformer and limiting the current it delivers. A 20 mA fuse may be connected in series with the relay. The resistor switched in series with the transformer may be 10 ohms.