| 摘要 |
A low noise type converter comprising an input transformer having first and second terminals for inputting a repetitive waveform signal. First and second series circuits are provided, each having one end connected respectively to the first and second terminals on the secondary side of the input transformer. A first circuit of serially connected complementary transistors have their bases or gates connected through a common node to the first series circuit. Similarly, a second circuit of serially connected complementary transistors have their bases or gates connected through a common node to the second series circuit. An output transformer has a first terminal on its primary side connected to a common node of the first complementary transistors and has a second terminal on its primary side connected to a common node of the second complementary transistors. Because the low noise type converter includes two complementary transistor circuits having no simultaneous 'ON' state, the rising and falling edges of the output formation waveform become smooth and the external noises are diminished. The level of the noise can be lowered to 1/10 of the noise level of existing devices. Thus, the converter can be used as a power amplifier in a switching regulator, for example, as a DC stabilizing power-source and as an DC-AC inverter for a dimmer. |
