DONNER SCIENTIFIC COMPANY


Berkeley, California

888 Galindo
Concord, California


Model 30
Model 30
Donner Scientific Company
Berkeley, California

Operating range: +/- 100 volts DC
Features: 10 - Amplifiers
  Removable problem board
  Reset and hold circuits for 5 integrators
  Two or more computers can be interconnected to work together.
Options: Cyclic-reset timer for repetitive operations.
Self-contained options:Coefficient-setting potentiometers
  Calibration bridge
  Time-division multiplier
  Simple logarithmic multiplier
  Diode function generator
  Low-frequency sine-wave generator

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Model 3100
Model 3100
Donner Scientific Company
Concord, California

Introduced in 1958.
Technology: Vacuum tubes
Operating range: +/- 100 volts DC
Computing Elements: 30 - Amplifiers
  40 - Coefficient potentiometers

Model 3100 control panel   Control panel of the Donner 3100.
In the bottom of the picture is the five rows of eight coefficient potentimeters for a total of 40. In the center of the control panel is the 15 initial condition potentimeters. To the right is the problem board.

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No Picture Yet
Model 3200

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Model 3500
  Model 3500

Model 3500 (portable)
Donner Scientific Company
Concord, California

Introduced about 1960.
Technology: Vacuum tubes
Operating range: +/- 100 volts DC
Computing Elements: 10 - Amplifiers consisting of:
  5 - integrators, and
  5 - summers.
  5 - Coefficient potentiometers.

Model 3530 problem board
  Optional Model 3530 Auxiliary Problem Board

  Sold as a set of two problem boards, each is 12 inches long, 8 inches wide, and 4.5 inches high with a 38 inch cable to connect to the computer.

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