Circuit arrangement for producing pulses having a high edge gradient

摘要

It is known for pulses to be produced using push-pull circuits which contain two series-connected transistors of opposite conductance type. The emitters of the two transistors are connected to one another and this connection point forms the output of the circuit. Using the circuit according to the invention, it is intended to produce pulses with a high edge gradient and a low power loss. To this end, the collector circuits of two transistors (T1, T2) are connected. At least one of the two transistors is driven via a differentiating element (C1, R1, R2; C2, R3, R4) whose time constant is less than the pulse duration. The invention is used for producing drive pulses for the high-voltage (high-tension) cascades of television replay units, and for the cathode of video camera tubes. <IMAGE>