A crystal diode meter circuit for Dobson Ozone Spectrophotometer
In Dobson Ozone Spectrophotometer, the amplified a.c. component of the photomultiplier output is rectified by means of a rotating commutator for indication in the meter. An attempt has been made to replace this mechanical rectifying device by means of a simple crystal diode circuit with satisfactory results. With this, a sharp minimum in current value, and not a reversal of the meter current, indicates null point. Studies have been made to see its workability in different spheres of spectorphotometer operation.
How to Cite
Copyright (c) 1966 MAUSAM
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
All articles published by MAUSAM are licensed under the Creative Commons Attribution 4.0 International License. This permits anyone.
Anyone is free:
- To Share - to copy, distribute and transmit the work
- To Remix - to adapt the work.
Under the following conditions:
- Share - copy and redistribute the material in any medium or format
- Adapt - remix, transform, and build upon the material for any purpose, even