| 摘要 |
A protection circuit compatible with an electronic stabilizer of a discharge apparatus, for preventing damage to circuit elements due to an excessive voltage at the premature ignition of a discharge tube, comprises an intermittent switching circuit coupled to a thyristor for periodically turning on or off the thyristor. In the intermittent switching circuit, a first contact point of a relay switch is coupled to the cathode of the thyristor and a resistor, a condensor and a gate of a transistor are connected in parallel from a second contact point of the relay switch and a relay coil and a channel of said transistor are serially connected from the power source and a base of another transistor is coupled to a third contact point of the relay switch, said other transistor controlling the operation of a transistor which drives the discharge tube.
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