• Country
• Germany

• Manufacturer / Brand
• Bosch; Deutschland

• Year
• 1978 ?

• Category
• Medical Technology

• Radiomuseum.org ID
• 349049

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / Block 9 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Various materials

• from Radiomuseum.org
• Model: Elektronisches Stethoskop EST 40 - Bosch; Deutschland

• Dimensions (WHD)
• 45 x 45 x 95 mm / 1.8 x 1.8 x 3.7 inch

• Notes

• Material: Kunststoff, Metall

  museum-digital.de:
  Die Lautstärke und die gewünschten zu hörenden Frequenzen lassen sich einstellen.
  Membran mit Elektronik, Einstellmöglichkeiten und Sensorschalter befinden sich in einem grauen Kunststoff-Gehäuse, daran angeschlossen ist eine Verbindungsleitung mit einem Lautsprecher-Element, das mit dem Stethoskop-Bügel verbunden ist.

  Dieses elektronische Stethoskop wurde zur Kontrolle des arterio-venösen Shunts in der Dialyse gebraucht.

  sciencemuseumgroup.org.uk:
  Binaural electronic stethoscope EST 40, claimed ausculatation of all chest sounds possible, sounds can be amplified up to 100 times, improving accuracy, can be connected to a display unit or an amplifier.

  The stethoscope is used on the chest or another part of the body to listen to organs such as the heart or lungs. The sounds that are heard can be used to help diagnose the patient’s problem. Bosch, the makers of this electronic stethoscope, claimed it was an innovative product allowing a greater range of sounds within the chest to be heard. The sounds could also be amplified up to one hundred times, which would improve the accuracy of diagnosis. The stethoscope could also be connected to a display unit to produce graphical representations.

• Net weight (2.2 lb = 1 kg)
• 0.120 kg / 0 lb 4.2 oz (0.264 lb)

• Author
• Model page created by Heribert Jung. See "Data change" for further contributors.

• Other Models

• Here you find 88 models, 80 with images and 10 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Bosch; Deutschland