1605-A

The General Radio 1605-A Impedance Comparator was introduced in 1956 Catalog O and remained available through Catalog T 1968.

Specifications

• Impedance Ranges:

  Resistance: 2 Ω to 20 MΩ.
  Capacitance: 40 pF to 500 μF.
  Inductance: 20 μh to 10,000 H.

• Internal Oscillator Frequencies: 100 Hz, 1 kHz, 10 kHz, 100 kHz.
• Meter Ranges:

  Impedance Magnitude Difference: ±0.3%, ± 1%, ±3%, ± 1O% full scale.
  Phase Angle Difference: ±0.003, ±0.01, ±0.03, ± 0.1 radian full scale.  	

• Voltage Across Standard and Unknown: approx. 0.15 V.

Links

• Experimenter describing Type 1605-A April 1956

Photos

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