Wide bandwidth constant current source for ac galvanomagnetic measurements.
A simple one-op-amp constant current source which has great versatility is described. Its important features include a wide bandwidth ( greater, similar10 kHz) and the ability to float from third-wire ground. Applications to three separate types of measurement are included, ac conductivity measurements on ionic conductors, Double-ac Hall effect measurements, and tunneling measurements.
Shacklette
L W
LW
Department of Physics, Seton Hall University, South Orange, New Jersey 07079, USA.