• Country
• United States of America (USA)

• Manufacturer / Brand
• Beckman Instruments, Shasta, Shockley; Richmond (CA)

• Year
• 1985 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 347348

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

• Number of Transistors
• 1

• Semiconductors
• 2SC1959 TL062 CD4011 CD4070 ICL7106 1N4148 1N4001

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / PP3: 1 x 9 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Circuitmate Digital Multimeter DM23 - Beckman Instruments, Shasta,

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 3 x 6.3 x 1.4 inch / 76 x 160 x 36 mm

• Notes

• Beckman Instruments Inc., Circuitmate Digital Multimeter DM23

  3-½ digit LCD display (max. indication 1999).

  Ranges:

  • V_DC: 0.2 - 2 - 20 - 200 - 1000 (Z_in all ranges 10 MΩ)
  • V_AC: 0.2 - 2 - 20 - 200 - 750   (Z_in all ranges 10 MΩ)
  • A_DC: 200μA - 20mA- 200mA - 10A
  • A_AC: 20mA- 200mA - 10A
  • R(Ω): 200 - 2k - 20k - 200k - 2M - 20M
  • Diode test
  • Sockets for transistor h_FE test
  • Continuity beeper

• Net weight (2.2 lb = 1 kg)
• 0 lb 11 oz (0.688 lb) / 0.312 kg

• Literature/Schematics (1)
• -- Schematic

• Author
• Model page created by Miguel Bravo-Cos. See "Data change" for further contributors.

• Other Models

• Here you find 51 models, 43 with images and 18 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Beckman Instruments, Shasta, Shockley; Richmond (CA)