Notes on the preparation and construction of silver reductor columns

✍ Scribed by Joseph I. Dinnin

• Book ID: 104104644
• Publisher: Elsevier Science
• Year: 1960
• Tongue: English
• Weight: 289 KB
• Volume: 23
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(60)80069-4

✦ Synopsis

When the amplifier is operated with increased gain, additional negative bias is required to set the recorder zero coincident with zero transmission. This additional voltage is obtained by changing connections at the photomultiplier voltage-supply regulator tubes so that minus 3oo V is supplied to the bias control and series regulator rather then --15o V. For convenience, a switch is installed so the operator can change from one voltage to the other. With the switch in the --300 V position, the steps in procedure A are followed. A pen excursion of about 2 89 times normal operation is obtained. The wiring diagram for the new circuit is shown in Fig. 2.