Mephisto Mirage, which power supply?

[smatovic]

Heyho,

a friend got a Mephisto Mirage 1984 w/o power supply unit:

https://www.schach-computer.info/wiki/i ... sto_Mirage

and I found different threads providing different information, 9V/5V/16V, 2.5A.

Hence the question, which power supply unit for the Mephisto Mirage 1984?

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Srdja

[Eelco de Groot]

If you are not sure, I would ask "Spacious Mind" if he is still around, his website is, see below. He is probably on HIARCS forum where there are more active collectors.

https://www.spacious-mind.com/html/mira ... board.html

This specifies the original part from Hegener and Glaser, 9V battery pack, and he lists a 9 V adapter, if you search for the original part, can still be found where the specification is 8 V.

For instance Google gives me https://amberone-shop.de/Original-Netzt ... t-8V-250mA

Hein Veldhuis also gives this partnumber, here:

https://www.schaakcomputers.nl/hein_vel ... -Brett.pdf

Or here: https://tluif.home.xs4all.nl/chescom/EngMephMir.html

The Russian microprocessor 1806 alone works with 5 V. I guess the rest is for operating the sensors?

1806 series
All devices in the 1806 series are manufactured in CMOS technology and require a +5 V power supply.

From "Further Development" segment on https://en.wikipedia.org/wiki/1801_series_CPU

[smatovic]

Thanks

Seems to be the RCA 1802:

https://en.wikipedia.org/wiki/RCA_1802

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Srdja

[Eelco de Groot]

I had not found that yet! It also operates the Buran, well I don't know if that ever went into space but the RCA equivalent is still responsible for Hubble, the Space Telescope

Space technology and science

The 1802 was used in many spacecraft and space science programs, experiments, projects and modules such as the Galileo spacecraft,[27] Magellan,[28] the Plasma Wave Analyzer instrument on ESA's Ulysses spacecraft, various Earth-orbiting satellites[29] and satellites carrying amateur radio.[30]

The 1802 has also been verified from NASA source documentation to have been used in the Hubble Space Telescope.[31]

Radiation hardened technology!

[Tibono]

if you search for the original part, can still be found where the specification is 8 V.

For instance Google gives me https://amberone-shop.de/Original-Netzt ... t-8V-250mA

Hein Veldhuis also gives this partnumber, here:

https://www.schaakcomputers.nl/hein_vel ... -Brett.pdf

Or here: https://tluif.home.xs4all.nl/chescom/EngMephMir.html

I can confirm mine runs using the HGN 5001 which specs are 8V ----- /250 mA (Plus inside)
BR

[smatovic]

[...]
I can confirm mine runs using the HGN 5001 which specs are 8V ----- /250 mA (Plus inside)
BR

Cool, thx, found two original ones at eBay.

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Srdja

[smatovic]

Just for the files, the HGN 5001 on Schach-Computer:

https://www.schach-computer.info/wiki/i ... e=HGN_5001

Code: Select all

Technische Einzelheiten:

    8V / 250mA (Plus innen)
    Steckerdurchmesser (außen/innen) 5,5mm / 2,1mm

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Srdja