• Country
• United States of America (USA)

• Manufacturer / Brand
• Hewlett-Packard, (HP); Palo Alto, CA

• Year
• 1945 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 223902

Click on the schematic thumbnail to request the schematic as a free document.

• Main principle
• none

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Audio Oscillator 200D - Hewlett-Packard, HP; Palo Alto

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Dimensions (WHD)
• 17 x 8.75 x 11 inch / 432 x 222 x 279 mm

• Notes

• ADVANTAGES:
  No zero setting, Great stability, Constant output, Wide frequency range, Logarithmic scale, Low distortion, Light weight
  
  USE THEM FOR:
  Amplifier testing, Broadcast transmitter audio response, Source of voltage for bridge measurements, Modulating signal generators, Supersonic voltage source, Driving mechanical systems Synchronizing pulse generators, Loud speaker resonance tests
  
  Frequency Range:
  Range 1: 7 cps – 70 cps
  Range 2: 70 cps - 700 cps
  Range 3: 700 cps - 7 kc
  Range 4: 7 kc – 70 kc
  
  Stability:
  Under normal conditions the frequency drift is less than ±2% even including initial warm-ups. Plus or minus 20% line voltage variations change the frequency less than ±0.2%, at 1 kc. No zero setting is necessary on these oscillators.
  
  Output:
  The Model 200D will deliver 100 milliwatts or 10 volts into a 1000 ohm load. The internal impedance of the output amplifier is about 50 ohms at 1000 cps.
  
  Frequency Response
  The output voltages is constant within plus or minus one decibel from 7 cps to 70 kc.
  
  Distortion:
  The total rms distortion contained in the waveform is less than 1%; distortion from 10 cps to 20 kc.
  
  Hum Voltage: the hum voltage is less than 0.1% of maximum output voltages.

  see Forum

   

• Net weight (2.2 lb = 1 kg)
• 32 lb 0 oz (32 lb) / 14.528 kg

• Source of data
• -- Original prospect or advert

• Author
• Model page created by Pius Steiner. See "Data change" for further contributors.

• Other Models

• Here you find 394 models, 362 with images and 139 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hewlett-Packard, (HP); Palo Alto, CA