Tunable galvanometer amplifier
R.M. Huey, B J Lancaster · Journal of Scientific Instruments · 1960
The construction and performance of a tunable galvanometer amplifier using a photomultiplier tube are described. A tuning range of a little over two octaves with resonant voltage gains of over 10 4 times and Q-values ranging from 1.7 to 7.5 were obtained.