Thyristor with turn-off circuit 230 V/8 A

735343

Thyristor which can be turned off with capacitor turn-off and free-wheeling arm. The turn-off circuit consists of ring-around coil with blocking diode, a turn-off thyristor and turn-off capacitor. A DC controller can be implemented directly using the PWM/PFM control unit 735341. Four integrated shunts enable problem-free measurement of the main current, turn-off current, ring-around current and the free-wheeling current. All the thyristors and diodes have a RCD protective circuit.

Main thyristor and turn-off thyristor

Repetitive peak forward off-state voltage (V_DRM): max. 800 V
On-state current, mean value (I_{T AV}): max. 13 A
Circuit-commutated recovery time: (t_Q): 35 µs

Free-wheeling diode

Repetitive peak forward off-state voltage (V_DRM): max. 1000 V
On-state current, mean value (I_{T AV}): max. 8 A
Shunts: 4 x 0.1 Ω, 1%
Turn-off capacitor: 4 µF, 450 V
Ring-around reactor: 1 mH

Thyristor with turn-off circuit 230 V/8 A

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