Faber-Castell TR-1 battery module alternatives
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Replacement drawer-style part to revive your old TR-1 electronic slide rule
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- 0 / 5
- Polubienia
- 3
- Pobrania
- 9
- Wydruki
- 0
- Wyświetlenia
- 50
- Oceny
- 0
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Informacje o modelu
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- Printables
- Kategoria
- Other Gadgets
- Licencja
- Creative Commons — Attribution
🚧 Beware, Work in Progress 🚧
This drawer fits the 1970's electronic slide rule TR-1 by Faber-Castell. It has correctly positioned pass-through holes for electrodes that can power the calculator. The correct voltage is 6 V. You can use, e.g., an even number of CR2032 batteries (each provides 3 V) to power the calculator. The original electrodes are 5 mm wide and 14 mm long. From the side, they have a slightly bent profile. The original guide shows it like this:
At this point the closed drawer is the only model provided here. I want this listing to evolve and provide additional configurations, like external micro-USB and USB-C power, original two-pronged fork input, and similar. Feel fro to contact me with your suggestions.
Electric Connection
The shape and distance of the electrodes is explained above. As for the power properties of the TR1, the following applies:
Input voltage: nominal 4.7 V DC
Maximum permissible open-circuit input voltage: 5.5 V DC
Input current: ca 30 mA
Operating frequency: 50 kHz – 130 kHz (average 75 kHz)
Permissible ambient temperature range: 0 °C to 40 °C
Excessively high voltage spikes can destroy the electronic components.
If random characters appear on the display instead of “0” after switching on, switch the calculator off and on again after approximately 10 seconds.