1240-A

The General Radio 1240-A Bridge Oscillator-Detector was introduced in Catalog S (1965) and remained available through Catalog 1978.

The Type 1240-A combines the Types 1232-A Null Detector and 1311-A Bridge Oscillator into a single unit. It can be configured for either bench version or rackmounted installation. The 1240-A is part of the 1620-A Capacitance-Measuring System.

Specifications

• See 1232-A for Null Detector specifications
• See 1311-A for Oscillator specifications

Links

• Experimenter July 1961 describing Type 1232-A
• Experimenter August 1962 describing Type 1311-A

Photos

• File:GR 1240-A Front B
• 

  Type 1620-A Late

• 

  Type 1620-A Early