Control circuit for electromagnetic hammer - has charging and discharging thyristors and delay stage interconnected by multiple transformer arrangement

摘要

The electromagnetic hammer has a circuit with two thyristors receiving control pulses from circuit portions operated by a single control pulse using a transformer with multiple secondary windings. The pulses are fed alternately to charging times of two capacitors. These pulses are fed to the prim. of a transformer with two secondaries. An input amplifier stage is fed from one of the secondaries and its output so fed to the primary of another transformer with its secondary connected to the control electrode of the charging thyristor. A delay stage is fed from the other secondary of the first transformer. A second amplifier stage fed from the delay stage is connected to the primary of a final transformer with its secondary connected to the control electrode of the discharging thyristor.