The Pendulum Instruments High Voltage Linear Amplifier F20A has a fixed amplification of 20 times and capable of bipolar high voltage output of ±150V. Any signal source with amplitude up to ±10 V can be used as an input device. The input amplitude should normally be kept within ±7.5 V. This is most important since the input protection network will limit the signal amplitude and cause clipping. The F20A High Voltage Linear Amplifier is equipped with a microfuse rated at 15 mA, which will be blown if the input voltage exceeds 300% of the maximum.
The maximum capacitive load is set at the factory to 400 V/µs which yields the load limit of 400 pF. The continuous output current limit is 185 mA and the output power limit is ca 30 W.
Other Single Channel High Voltage Linear Amplifiers
Full and small-signal frequency responses without load (red and orange marks) and with 400 pF capacitive load (blue and green marks), respectively, are shown in the diagram below: