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1220-A: Difference between revisions
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The '''General Radio 1220-A Unit Klystron Oscillator''' was introduced in 1956 Catalog O and remained available through Catalog S 1965. | The '''General Radio 1220-A Unit Klystron Oscillator''' was introduced in 1956 Catalog O and remained available through Catalog S 1965. | ||
The Type 1220-A is the foundation of for the Unit Klystron Oscillator series and supplied without a Klystron. It contains all fixtures to adapt the various Klystron tubes, all that's required to change the frequency range is the appropriate Klystron tube. An internal 1 kHz oscillator followed by a Schmitt trigger provides internal square-wave modulation. The 1220-A requires an external power supply, the [[1201-B]] is recommended. The external supply can't supply all the voltages required by Klystron so an internal supply is needed. The internal supply uses 6.3 V ac from the [[1201-B]] to develop the regulated Repeller voltage and unregulated voltage for Schmitt trigger circuit. | |||
The front panel accepts external modulation through the modulation switch as required. | |||
==Specifications== | ==Specifications== | ||