Based on the analysis of vacuumtube slight variation equivalent circuit, a headphone amplifier is designed to drive high fidelity headphone.
以电子管微变等效电路分析为基础，设计了一款以驱动高保真耳机为目的的耳机放大器。
2
How to prolong the service life of high power vacuumtube and how to implement the proposed plan in practical circuits is discussed theoretically in this paper.
本文重点从理论上分析了如何延长大功率管的寿命，以及怎样才能在实际电路中实施这一方案。
3
The transmitter test results indicate that solid state switches could replace traditional vacuum switching tube and work reliably in high PRF high power radar transmitter.