| 摘要 |
PURPOSE:To reduce storage time and lowering time of a transistor by composing the circuit of a power transistor for driving a load, a protection Di to the base, and a transistor for escaping a storage carrier in the base. CONSTITUTION:The circuit is composed of a power transistor Q1 for driving an inductance load RL, a diode D1 for protecting the transistor Q1 by a high voltage generated by the load RL, a transistor Q2, Q1 for escaping a base current to the low potential side when a carrier stored in the base of the transistor Q1, and a transistor Q4 for sufficiently turning on the transistor Q1, Q2 for operating the transistors Q2 and Q3. |
