| 摘要 |
PURPOSE:To reduce the weight and cost of a transistor inverter by producing a starting current to the base of a transistor from either one of a pair of AC inputs of a full-wave rectifier. CONSTITUTION:Starting resistors R4, R5 which supply starting currents to at least one of a pair of oscillating transistors Tr1, Tr2 from either one of a pair of AC input terminals of a full-wave rectifier DB1. As a result, the power loss of the resistors R4, R5 are reduced as compared with the conventional one, and a power transformer PT is not used. Accordingly, the weight and cost can be reduced. |
