| 摘要 |
PURPOSE:To scan wavelengths even in fixed slit width, by feeding back a control system to the gains of an operational amplifier as the quantity of resistance value, which changes. CONSTITUTION:A CPU1, a ROM memory 2, a RAM memory 3, an I/O 4 for control, etc. are mounted to this device, and perform main control and data processing. The resistance of resistance R1, R2...R8 is connected in parallel in the input resistance 9 of an operational amplifier 7, and arbitrary resistance can be set by turning a switch group 31 ON-OFF in the resistance. Amplifier gains can be changed over by combining SW1-SW8. Since a control system is not fed back to a slit 20 of a monochro-meter, fixed slit width set by operators is kept even when wave lengths are scanned, and spectra in the same bandpass are recorded over the whole range. |
