Rapid, digital transistor amplifier, in particular video output amplifier for VDUs

摘要

In a rapid digital transistor amplifier whose final output stage transistor (13) is connected at its collector to an inductor (14), the power loss of the working resistor (15) which is connected to the inductor (14) in series can be reduced in that the current which flows across the inductor (14) is partially produced from a voltage (Vc) which is smaller than the operating voltage (Vb). As a result, the power requirement which occurs as the final output stage transistor (13) switches off as a result of the recharging of the parasitic capacitors (19) of the circuit is covered. The working resistor (15) can then be dimensioned with a higher resistance value to correspond to its lower loading. <IMAGE>