| 摘要 |
This scheme is used in impulse supply devices, D-class amplifiers and tension transformers. It ensures an optimal saturation of the driven transistor upon change in its load within a wide range, leading to the increase of the efficiency of the device where it is used. The scheme consists of a current transformer (1), switched to the collector chain of the driven transistor (2) and connected to a load (3). A current rectifier (4) is connected to transistors (5 and 6), between the bases of which is placed a diode (7). The base of the second transistor (6) is connected to the collector of the first (5) by a parallel chain from a resistor (8) and a spot facing diode (9). The base of the first transistor is connected to the collector of the second by another resistor (10). The collectors of the two transistors are connected by a managing scheme (11).
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