Koçum C
Biomedical Engineering Department, Başkent University, Ankara, Turkey.
Rev Sci Instrum. 2011 Aug;82(8):084702. doi: 10.1063/1.3622750.
The design of a digitally gain controlled high-voltage non-inverting bipolar linear amplifier is presented. This cost efficient and relatively simple circuit has stable operation range from dc to 90 kHz under the load of 10 kΩ and 39 pF. The amplifier can swing up to 360 V(pp) under these conditions and it has 2.5 μs rise time. The gain can be changed by the aid of JFETs. The amplifiers have been realized using a combination of operational amplifiers and high-voltage discrete bipolar junction transistors. The circuit details and performance characteristics are discussed.
本文介绍了一种数字增益控制的高压同相双极线性放大器的设计。这种经济高效且相对简单的电路在10 kΩ和39 pF的负载下，具有从直流到90 kHz的稳定工作范围。在这些条件下，该放大器的输出摆幅可达360 V（峰峰值），上升时间为2.5 μs。增益可借助结型场效应管（JFET）进行改变。这些放大器采用运算放大器和高压分立双极结型晶体管相结合的方式实现。文中讨论了电路细节和性能特性。
