| 摘要 |
PROBLEM TO BE SOLVED: To provide a drive circuit for transistor with which high-speed switching can be performed and low-loss performance improved. SOLUTION: The emitter of a drive transistor 2 is connected to the base of a transistor 1, a smoothing circuit using a diode 3 and a smoothing capacitor 4 is connected to the collector of the drive transistor 2, a current to the smoothing circuit is supplied from the secondary side winding wire of a current transformer 6, to which the primary side is connected, the primary side and secondary side of the current transformer 6 are connected, and a diode 5 is connected in parallel to the smoothing capacitor 4. In such a drive circuit for transistor, diodes 12 and 13 are connected inversely parallel between the base of the transistor 1 and the emitter of the drive transistor 2, a diode 11 is connected between the collect or of the transistor 1 and the emitter of the drive transistor 2, and a main transistor base terminal of base pull-out is provided for off-operation. |
