• Country
• Netherlands

• Manufacturer / Brand
• Philips; Eindhoven (tubes international!); Miniwatt

• Year
• 1968

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 136982

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

• Number of Transistors
• 4

• Semiconductors
• BC149 BC149 BC149 BC149

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Printed Circuit Board

• from Radiomuseum.org
• Model: Entzerrer-Vorverstärker 22GH905 /00 - Philips; Eindhoven tubes

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 175 x 50 x 90 mm / 6.9 x 2 x 3.5 inch

• Notes

• Betrieb an 220 Volt mit Vorwiderstand 27 kΩ / 1 Watt.

  ---

  RIAA correction amplifier for moving magnet or some moving coil pick-up elements (most moving coil elements need 20 dB more amplification).

  Gain: 35 dB @ 1000Hz.

  Input impedance: 47kΩ.

  To connect to 220V mains, a ballast resistor of 27kΩ / 1 watt must be used.

   

• Net weight (2.2 lb = 1 kg)
• 0.170 kg / 0 lb 6 oz (0.374 lb)

• Source of data
• -- Original-techn. papers.

• Author
• Model page created by Malte Rosenbaum. See "Data change" for further contributors.

• Other Models

• Here you find 5251 models, 4395 with images and 3451 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philips; Eindhoven (tubes international!); Miniwatt