1633-A

The General Radio 1633-A Incremental Inductance Bridge was introduced in 1968 Catalog T and remained available through Catalog 1978.

The Type 1633-A is specifically designed for the measurement of iron-core inductors such as transformers, chokes and other coils with ferromagnetic cores. It's built in detector which is selective at nine specific frequencies is designed with a narrow band with reducing harmonics generated in the unknown. The 1633-A requires an external generator with the power required to saturate the unknown to the desired level. The Types 1265-A DC Power Supply and 1308-A Audio Oscillator generator combination along with the 1633-A make up the 1630-A Inductance Measuring Assembly.

Specifications

• Accuracy:
• Inductance: ±1% of reading or 0.1% of full scale.
• Resistance: ±2% of reading or 0.1% of full scale.
• Frequency Range:
• Internal Detector: accurate to ±1%, 50, 60, 100, 120, 400, and 800 Hz, and 1, 10, and 15.75 kHz.
• External Detector: external detectors can be used at any frequency between 20 Hz and 20 kHz.
• External Generator 20 Hz to 20 kHz.

Links

• Experimenter describing Type 1633-A Incremental Inductance Bridge May 1962

Photos

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